Holy smoke! What do you guys think??

[VietNamNSX]

I have a 92'. Just got a valve job and timing belt done. I installed H/I/E, straight (test) pipe, Dali chip, weigh-saving including ALL carpets, sound-deadening materials behind the seats, all tools and spare tires, pretty much everything that can be remove before going into more technical stuff (200-300 lbs). This car pulls and pulls, even in 5th. I have tested against some and did myself very proud. I have owned a number of NSX's including a 2004 and this is the most powerful stage that I have got one to. A drop from 5th to 3rd on the freeway is greeted by a growl and the car shot forward. 1st and 2nd shift will also chirp the tires. Holy smoke is all I can say!!

- how fast do you guys think my vehicle is right now?
- why is this now that the cat and stock header are gone, the car doesn't idle very smooth no more? No back pressure or do I need to check something? Check the valve job that was just done?
- how would this thing compared to a 6lbs supercharged NSX?
- best way to make your NSX fast before going into FI or nitrous, in my opinion and what else can i take out beofore compromising the safety of the car?

 

[Diablo360]

You and I have very very very similar cars, minus the dali chip in mine. I may be a little lighter than you though :biggrin: No passenger seat and a pair of red Recaro Pole Positions (8lb's each) on the way...... Have you done the wipers and wiper motor, stripped out the entire trunk, stereo system, rear bumper beam, CF nsx-r spoiler? Those are some more things you can do to bring down the weight. I feel that my car is a lot faster as well. I'm looking to go FI soon otherwise I would have bought the Dali chip. Not sure if i'm going to do a turbo or SC but either way it'll be a beast when it's done.........

 

[PoohBEAR]

I did the same to my little dog. After a long year, I trimmed him down. The groom took about 2-3 off of his hair. Now he seems to run faster when I call him to eat. Much faster when chasing the mail man....he growl and growl. I like to see how fast he can go after I shaved him completely.

 

[ETLMD]

What headers, exhaust, and intake did you install?

 

[nsxsupra]

I have a 92'. Just got a valve job and timing belt done. I installed H/I/E, straight (test) pipe, Dali chip, weigh-saving including ALL carpets, sound-deadening materials behind the seats, all tools and spare tires, pretty much everything that can be remove before going into more technical stuff (200-300 lbs).

Well done. All the bolt on+weight reduction makes huge difference.

- how fast do you guys think my vehicle is right now?

A lot faster than stock NSX that is for sure. Probably a little faster than stock NA2.

- best way to make your NSX fast before going into FI or nitrous

More diet on both the car and yourself, every pound counts. If you are never going FI, then get JDM short gears and 4.55R&P if you can find a used one. These 2 mod alone will lower your 0~60 in almost .5sec. You are going to go through gears like crazy. Light weight wheels will also help, light weight brake rotors like Poject Mu 2 piece rotors in oem size to further reduce rotating mass.

- how would this thing compared to a 6lbs supercharged NSX?

http://www.1017.org/nsx/Washday/WashdayRace.htm
I am sorry to tell you, but you will get raped so hard it is not even funny. Its all about power to weight ratio. Lets say with all your mods you are at 310bhp/2700lbs with a power to weight ratio of 8.7lbs per hp. 6lb supercharged NSX even at full weight 400bhp/3010lbs have weight to power ratio of 7.25lbs per hp. 1.45~1.5lb per hp difference is night and day. if you are in the area I will let you do a roll on test and give you 2 car head start. I never turn down a request for a roll on comparision, I like testing from a dig the best, but that is partial driver skill. Roll on test is better for pure performance comparison.

If the SC NSX also drop 200lbs, then the weight/power ratio will drop even further. Forget about Turbo NSXes, those have insane weight/power ratio .

Chirp tires doesn't mean anything. Some NSXes can chirp 1, 2, 3 shift while still NA. Add short gear and 4.235/4.44/4.55 R&P you will chirp 3rd gear all day long.

I can chirp 2, 3 shift in AP2 S2K with its short gearing + quick shifting. If you have a grabby clutch+crappy tires, you will chirp them easily.

 

[Synthesis]

i need a supercharger :frown:

 

[VietNamNSX]

Well done. All the bolt on+weight reduction makes huge difference.
A lot faster than stock NSX that is for sure. Probably a little faster than stock NA2.

I am sorry to tell you, but you will get raped so hard it is not even funny. Its all about power to weight ratio. Lets say with all your mods you are at 310bhp/2700lbs with a power to weight ratio of 8.7lbs per hp. 6lb supercharged NSX even at full weight 400bhp/3010lbs have weight to power ratio of 7.25lbs per hp. 1.45~1.5lb per hp difference is night and day.
Chirp tires doesn't mean anything. Some NSXes can chirp 1, 2, 3 shift while still NA. Add short gear and 4.235/4.44/4.55 R&P you will chirp 3rd gear all day long.
.

I have no reason to doubt your comments about the comparison to a supercharged car then. I am just so excited about my car right now! No official number yet but i believe this car, the way that it is now, will rape my 2004. Ohh, I tried to keep the weigh down by going on a light 17/17 and 245/40 in the rear set up instead of a common 17/18, 265 or 255 rear one. I can feel the lightness under my feet. Also, i removed the old headlights (along with more stuffs) and installed a 2005 headlights set in there. That right there also give me less weigh now that I don't have to deal with the old headlights' motor, covers, etc; just like the case of removing the old cat and header system, where there were a lot of stuff. I am going to take out more weigh one way or another then.

I have RM exhaust, dali chip, dali straight pipe, drop-in K/N intake, DC header, and most of the weigh that i feel can be taken off before I compromised the safety features of the car.

This car pulls, even in 4th and 5th gear.

Why is the car idled a bit rough now? New valve job shouldn't be treated roughly, 3000 miles? No cat and stock header equal lots of empty backspace of the engine?

 

[VietNamNSX]

You and I have very very very similar cars, minus the dali chip in mine. I may be a little lighter than you though :biggrin: No passenger seat and a pair of red Recaro Pole Positions (8lb's each) on the way...... Have you done the wipers and wiper motor, stripped out the entire trunk, stereo system, rear bumper beam, CF nsx-r spoiler? Those are some more things you can do to bring down the weight. I feel that my car is a lot faster as well. I'm looking to go FI soon otherwise I would have bought the Dali chip. Not sure if i'm going to do a turbo or SC but either way it'll be a beast when it's done.........

I have stripped the trunk and stereo system. Want a lighter spoiler! However, I can't touch the beam nd wipers because of safety issues (sometime it rain). And I am sure you will be, even more than now, when it is done!

Why is the car idled a bit rough now? Because of all those things that I removed? Because of driving too aggressive on a new valve job (3000 miles)? Or is it because no cat/factory header equal roughness.

 

[nsxsupra]

Why is the car idled a bit rough now? Because of all those things that I removed? Because of driving too aggressive on a new valve job (3000 miles)? Or is it because no cat/factory header equal roughness.

I don't know about that, maybe 02 sensor? dirty throttle body? dirty air filter?
Take it back to the shop and have it checked.

For even more weight reduction info. Check out this thread:
http://www.nsxprime.com/forums/showthread.php?t=78963

Ohh, I tried to keep the weigh down by going on a light 17/17 and 245/40 in the rear set up instead of a common 17/18, 265 or 255 rear one. I can feel the lightness under my feet.

I need to shake your hand. Which wheels are you running? That is exact reason why I went with 17/17 13.8lbs/front, 14.8lbs/rear.

Difference is big from getting off the line, once car is moving the weight off the wheel doesn't seem to matter as much.

 

[Semnos_NSX]

I did the same to my little dog. After a long year, I trimmed him down. The groom took about 2-3 off of his hair. Now he seems to run faster when I call him to eat. Much faster when chasing the mail man....he growl and growl. I like to see how fast he can go after I shaved him completely.

LOL......

 

[DRIFTER]

Might be the chip that you have in your car. My 92 has gutted cats and the thing runs butter smooth. I also have a similar setup SOS header and ARK DT-S exhaust. I would try putting the stock ECU in and see if that fixes the problem with the ruff idle. Also short gears make a huge difference, even more noticeable then the I/H/E. I had mine done a couple month ago and I have to say I am very pleased with the my new setup.

 

[nsxtasy]

- how fast do you guys think my vehicle is right now?

It depends.

The H/I/E might give you an extra 15 hp, but they might not. If they do, they improve your 1/4 mile times by 0.3 second.

The test pipe does nothing.

The weight saving you describe is probably NOT 200-300 pounds; it's probably around 75 pounds, based on your description. If so, that will reduce your 1/4 mile times by 0.1 second. If you want to drop 200 pounds or more, you're going to need to do things like remove all the air conditioning system, stereo, door panels, stuff like that.

- why is this now that the cat and stock header are gone, the car doesn't idle very smooth no more? No back pressure or do I need to check something? Check the valve job that was just done?

Try putting the cat back on and see if the roughness goes away. You can also try swapping back to the stock chip. If the roughness goes away, then you've found what's causing it.

- how would this thing compared to a 6lbs supercharged NSX?

Nowhere near as fast.

- best way to make your NSX fast before going into FI or nitrous, in my opinion and what else can i take out beofore compromising the safety of the car?

At this point, the best way is with a Comptech supercharger. See above regarding what else to remove (A/C, stereo, interior trim, etc).

If you are never going FI, then get JDM short gears and 4.55R&P if you can find a used one. These 2 mod alone will lower your 0~60 in almost .5sec.

That's only because 60 mph is an arbitrary number that most favors these mods. For example, your 0-70 time only drops by 0.3 second and 0-80 time only drops by 0.2 second. 1/4 mile time drops by 0.3 second with these two mods.

 

[mickeylex]

I need to shake your hand. Which wheels are you running? That is exact reason why I went with 17/17 13.8lbs/front, 14.8lbs/rear.

Wow. Those are some light wheels - even lighter than OEM NSX. Which wheels are they?

 

[ashman]

I am sorry to tell you, but you will get raped so hard it is not even funny.

Eloquently articulated as only a supercharged NSX owner can.

 

[VietNamNSX]

It depends.

The H/I/E might give you an extra 15 hp, but they might not. If they do, they improve your 1/4 mile times by 0.3 second.

The weight saving you describe is probably NOT 200-300 pounds; it's probably around 75 pounds, based on your description. If so, that will reduce your 1/4 mile times by 0.1 second. If you want to drop 200 pounds or more, you're going to need to do things like remove all the air conditioning system, stereo, door panels, stuff like that.

Let's see the list of things I have removed:

- Both side-scoops
- All carpets including the one in the trunk
- All tools and accessories
- Take out the bulky stock stereo unit for an aftermarket one
- Take out the factory cigarrete box and replace it with a very light cover
- No spare tire and tire-clamp
- Replaced all stock header and cat parts, which were heavy
- Light 17 inch with 245/40 in the rear
- All sound-deadening stuff behind the seats
- Remove the middle speaker and the bulgy thing in the middle that housed it
- Remove all inside panels
- Replace the old lights with all its accessories with a stationary 2005 unit
- Replace all unused speaker wires now that I donot have a center speaker
- All the minor medal pieces inside the engine and cabin
- Thinking about doing the tow-hook real soon. (If so, where am i going to hook up if i need a tow?)

How am I doing on weigh-saving so far, Ken? How many pounds do you think?

What do you think of my acceleration time now, 0-60 and 1/4?

 

[Diablo360]

I think I/H/E does more than 15hp on the vast majority of NA1 NSX's. My NA1 coupe dynoed consistantly in the low 270's (270-272), and that was with a messed up air to fuel ratio after 3-5k rpm..... I'd say my gain is 30-40hp over stock after those mods and probably another 10hp if I do the Dali chip. Can't argue with the #'s......

Also I think he took of more than 75lbs..... Just the spare tire and tool kit alone is about 45 pounds. Do you know how heavy the carpeting is? I took mine out last week. Needless to say he has already hit the -75 mark with those 3 things alone. I'd say he is off 200lbs or more. I know what I took off of my car yet people still ? the fact that I have taken off 350lbs worth of stuff. It isn't that hard. The weight in will tell all.......

 

[VietNamNSX]

I think I/H/E does more than 15hp on the vast majority of NA1 NSX's. My NA1 coupe dynoed consistantly in the low 270's (270-272), and that was with a messed up air to fuel ratio after 3-5k rpm..... I'd say my gain is 30-40hp over stock after those mods and probably another 10hp if I do the Dali chip. Can't argue with the #'s......

Also I think he took of more than 75lbs..... Just the spare tire and tool kit alone is about 45 pounds. Do you know how heavy the carpeting is? I took mine out last week. Needless to say he has already hit the -75 mark with those 3 things alone. I'd say he is off 200lbs or more. I know what I took off of my car yet people still ? the fact that I have taken off 350lbs worth of stuff. It isn't that hard. The weight in will tell all.......

If I remove the tow-hook and needed a tow, is there other places a tow driver can hook up to? The carpets inside the cabin and trunk were heavy.

 

[nsxsupra]

If I remove the tow-hook and needed a tow, is there other places a tow driver can hook up to? The carpets inside the cabin and trunk were heavy.

I would not let them tow my car with tow hook anyway if you car is dropped. They have slider that placed under your wheels in case you need a flatbed. The tow hook is about 3lbs, I removed my:biggrin:

What do you think of my acceleration time now, 0-60 and 1/4?

At your stage, it should be high 4.8~4.9sec. I have a video of my NSX doing 0~60mph in high 4secs pre-ctsc. Back then it was NA with just weight reduction and exhaust, dynoed at 270rwhp with no aftermarket headers. Let me dig it up if I can find it and I will upload it to Youtube.

You and test it with a G-tech pro competition.

 

[Diablo360]

If I remove the tow-hook and needed a tow, is there other places a tow driver can hook up to? The carpets inside the cabin and trunk were heavy.

Remember, you have front and rear tow hooks. The rear ones you don't need unless you dyno (then put them on). The fronts are pretty much useless from what i have heard because unless you take the bumper off before you attach the ???? to the hooks you'll end up ripping your bumper off. You can do what i'm going to do and buy one of these: http://www.daliracing.com/v666-5/catalog/index_browse_part.cfm?focus=1188

 

[VietNamNSX]

At your stage, it should be high 4.8~4.9sec. I have a video of my NSX doing 0~60mph in high 4secs pre-ctsc. Back then it was NA with just weight reduction and exhaust, dynoed at 270rwhp with no aftermarket headers. Let me dig it up if I can find it and I will upload it to Youtube.

You and test it with a G-tech pro competition.[/QUOTE]

Forgive me, but compare to your baby before CTSC, I have more power (header, straight pipe, chip, plus exhaust and intake) and less weigh (I think), so I am expecting a bit better than 4.8-4.9. And it sure feels like it against the cars whish I have tested against.

 

[nsxsupra]

I am expecting a bit better than 4.8-4.9. And it sure feels like it against the cars whish I have tested against.

That might be a bit of wishful thinking with stock 5spd gearing.

0~60mph is really not a good way to tell how fast a car really is in straightline. The gap increase dramaticly higher the speed you go.

Have you dynoed the car with above mods? What wheels/tires are you running. The RM exhaust is actually not that light, the K&N drop in filter might hurt your power. Sorry for my straightforwardness:redface:

With above mods you might see additional 5~10rwhp more than 270rwhp if you are really lucky. The RM exhaust is not even that light. If you really want to find out, you can hit the dragstrip or find another NSX locally to test. Like I said if you are in our area, feel free to come cruise with us, plenty of cars to let you test with and observe.

Simo's nsx is about at the same stage as you, I bet he is way lighter than you are with the items you listed above. My observation is that even that that stage Simo's NSX will match NA2 6spd with I/H/E. Its already very phenomenal.

Another item you can remove is the engine cover, that weights approximately 13~15lbs. I also recommend removing wiper motor, drain washer fluid.

Wow. Those are some light wheels - even lighter than OEM NSX. Which wheels are they?

I run CE28N 17/17. Other noteable ultra light wheels that are lighter than oem are SSR Competition and Racinghart CP-035R

You can see the wheel weight here:
http://www.wheelweights.net/

 

[VietNamNSX]

Thank you for your reply! I take your comments with serious consideration and not offended in any shape or way. When we eventually hooked up, we will play a bit to see how bad you are going to kick my arse. It's not going to be pretty for me i think.

 

[nsxsupra]

Thank you for your reply! I take your comments with serious consideration and not offended in any shape or way.

Greatly appreciately that. You might kick my rear. Come hang out sometime and check out other NSXes as well, lots of variety. We all have same car after all.

 

[Diablo360]

Jason is right...... The 80 extra horsepower is a LOT of power. It's hard to pull off enough weight to catch up with a CTSC NSX. Even if you got it down to 2400 he'd still be faster.... I'm approaching 2600 and will stop once I crack it. My car if FAST like yours. I'm guessing I may be a little lighter as it seems like I have pulled off a few more things. I too feel that my car is faster than a hooked up NA2 (I/H/E). especially with my high dyno #'s. If your are in SoCal you should come to one of the PAG meets or future drives so we can compare cars.

 

[BD]

I am just so excited about my car right now! No official number yet but i believe this car, the way that it is now, will rape my 2004.

I DISAGREE!!!

I tried to keep the weigh down by going on a light 17/17 and 245/40 in the rear set up instead of a common 17/18, 265 or 255 rear one. I can feel the lightness under my feet. Also, i removed the old headlights (along with more stuffs) and installed a 2005 headlights set in there.

The weight saving from your headlight is off set by the bigger wheels!!! I don’t understand, did you did the 02 face-lift or simply by changing the head light?

I have RM exhaust, dali chip, dali straight pipe, drop-in K/N intake, DC header, and most of the weigh that i feel can be taken off before I compromised the safety features of the car.

This car pulls, even in 4th and 5th gear.

You replaced the heavy OEM exhaust with another heavy aftermarket exhaust? Test pipes will not help the car pull faster. You have a NA1 with tall gearing, so you lost even more low end torque by using test pipes; therefore, the car can’t possibly pull harder than an 04.

Sorry, I’m not pick on you, well, maybe I am, because you’re story sounded funny.