Should I?

[SpaSuperCharged98]

I have a 98 Super Charged Yellow NSX. I have Super Charger, Headers, Exhaust, Air Box etc etc. My question is... I wanted more speed due to my partners 2002 Twin Turbo Porsche beat me. NOT BY MUCH... I was going to add 3LBS of Boost as well as change my Ring & Pinion to - 4.55:1. I was told that the added boost will give me 20-30 more HP and the gears will drop my top speed 10 MPH, BUT get me out the hole much faster..

What do you guys think?? Is it worth the extra 4K to do it?

I will post pics ASAP of this car.

 

[ScienceofSpeed]

I think the 4.55 would be a good mod next time you need to open the tranny. The 4.55 with 6 spd is my favorite tranny setup.

The 9-psi kit will increase your RWHP, but is it worth the money? All depends on how much you want to spend.

-- Chris
Disclaimer: ScienceofSpeed is a Comptech Dealer

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http://www.NSXClassifieds.com - free NSX classifieds site!

 

[SpaSuperCharged98]

The gears are $1,800 and the boost is $1,200. My dealership said they will eat the labor for both (if I will be a reference) which I agreed to do. actually the modes are 3K (minus 1K for labor) You think adding both I will be able to keep up with the 02 Twin Turbo Porsche?

Originally posted by ScienceofSpeed:
I think the 4.55 would be a good mod next time you need to open the tranny. The 4.55 with 6 spd is my favorite tranny setup.

The 9-psi kit will increase your RWHP, but is it worth the money? All depends on how much you want to spend.

-- Chris
Disclaimer: ScienceofSpeed is a Comptech Dealer

 

[ilya]

I thought upgrading to a 9lb is a simple matter of changing to the shorter belt???

 

[David Allen]

I would be very careful with the 9psi kit - Comptech (as far as I'm aware) does not warranty it - so if you put it on and blow anything, you're screwed.

If he has the below stock specs for his TT AWD Porsche:

Weight: 3395 lbs
Horsepower: 415 hp @ 6000 rpm
Torque: 415 ft-lbs. @ 2700 rpm

I don't think you'll ever have a chance. You cannot beat the launch of AWD with 415 foot pounds of torque, and without serious engine work, if you try to go more than 450 or so at the crank, you could very well blow your engine (from what I've been told).

Don't get me wrong - it can be done, but boosting your PSI and throwing in new gears I don't think will cut it. You should talk with David in TX - he's running ~500RWHP. That would definitely give the Porsche a run for the money.

Just a note, for the same amount of money you spent on all of your mods, your friend could modify his Porsche so you could never touch him

The NSX is a wonderful car, but it was not built to compete with something like a AWD TT porsche.

Nice thing is that your car will never look like an oblong bannana, like the Porsche does!

 

[sjs]

Sell the Comptech unit, forget the R&P, and buy the Basch SC.

[This message has been edited by sjs (edited 19 February 2002).]

 

[Number9]

Originally posted by SpaSuperCharged98:
The gears are $1,800 and the boost is $1,200. My dealership said they will eat the labor for both (if I will be a reference) which I agreed to do. actually the modes are 3K (minus 1K for labor) You think adding both I will be able to keep up with the 02 Twin Turbo Porsche?

I say do it. Sounds like it'd be fun to drive regardless. Power-to-weight ratio should already be approaching Turbo Porsche levels so just a little more boost should do the trick. Also, dump the spare tire/tools and pack a cell phone and Acura Care card for tows. You can also lose about 15 lbs of battery weight pretty easily by going aftermarket. Maybe lighter wheels and you should be pretty darned close.

Actually, it may still be tough to beat the Porsche 0-60 due to its AWD but the AWD should also have more drivetrain losses so maybe 1/4 mile might be more advantageous for a high-boosted NSX. All bets are off if the P-car driver bumps boost too. As for the diff mod, see if you can find the prior NSXCA magazine with the Bob Butler article. It'll give you a good idea if the diff helps or hurts 0-60 or 1/4-mi elapsed time.

 

[nsxtasy]

Originally posted by Number9:
As for the diff mod, see if you can find the prior NSXCA magazine with the Bob Butler article. It'll give you a good idea if the diff helps or hurts 0-60 or 1/4-mi elapsed time.

Here are the 0-60 and 1/4-mi numbers from that article:

'97 NSX Coupe
stock 4.79 13.24
4.55 R&P 4.47 13.06

'97 NSX-T
stock 4.93 13.39
4.55 R&P 4.60 13.20

This is for a stock drivetrain and does not reflect the supercharger or other mods.

 

[smoore]

hmmm.... i raced a 2001 porsche when i was spraying and he lost we raced three times from a roll and i pulled him 1 car in second and 1/2 a car in third and it stayed that way till 120mph, then a light turned yellow and he wanted to race from a stop of coarse i didn't race from a stop as i was scared of the outcome.......

p.s. his car had a temp tag on it so maybe he was getting used to the car

 

[SpaSuperCharged98]

Any idea (Guess) Specs on my car after the gears and adding 3lbs..Also-Thanks for the input

Originally posted by nsxtasy:
Here are the 0-60 and 1/4-mi numbers from that article:

'97 NSX Coupe
stock 4.79 13.24
4.55 R&P 4.47 13.06

'97 NSX-T
stock 4.93 13.39
4.55 R&P 4.60 13.20

This is for a stock drivetrain and does not reflect the supercharger or other mods.

 

[nsxtasy]

Originally posted by smoore:
hmmm.... i raced a 2001 porsche when i was spraying and he lost we raced three times from a roll and i pulled him 1 car in second and 1/2 a car in third and it stayed that way till 120mph, then a light turned yellow and he wanted to race from a stop of coarse i didn't race from a stop as i was scared of the outcome.......

Turbo or NA?

 

[smoore]

turbo. if a na porsche was hanging with me when i was spraying that would mean i had any empty bottle and bad plugs or something why do you guys have problems with na porsches?

[This message has been edited by smoore (edited 19 February 2002).]

 

[SpaSuperCharged98]

Actually they are replacing the Pully, Belt, Fuel Injectors as well as fuel regulator

Originally posted by ilya:
I thought upgrading to a 9lb is a simple matter of changing to the shorter belt???

 

[Runutzzzzz]

What does a S/C 97+ Run? Isn't the 02' 996 TT run low 12's? I've raced two 996 b-4. on off the line, I beat in a 1/4 he did smoke me from 0-60FT.. LOL AWD. then we raced on the highway and I smoked him.

Then there was the time with Mr. E. Whitman. What's his 996 got under that hood?? LOL We got upto about 160-170MPH, I wasn't "that" far behind, about 2-3 cars.

 

[ANYTIME]

If you come to the meeting on Thursday night in Calabasas, you can talk to the FactorXMotorsports guys and find out what tuning your car would cost before throwing more money at it. Ken Nami always has his dyno tuned CTSC NSX there for testdrives and had me

for days! http://southwest.nsxca.org/events.htm

John Richards

 

[SpaSuperCharged98]

My office is in Calabasas..Where do you meet? Time? All I wanted to know was..Will I get more performance out of my SC car by adding 3 more Lbs of boost and changing the gears to 4:55?

Originally posted by ANYTIME:
If you come to the meeting on Thursday night in Calabasas, you can talk to the FactorXMotorsports guys and find out what tuning your car would cost before throwing more money at it. Ken Nami always has his dyno tuned CTSC NSX there for testdrives and had me

for days! http://southwest.nsxca.org/events.htm

John Richards

 

[ChopsJazz]

Spa, I have driven two supercharged 2000's with standard gearing and a 9lb '92 with a 4.55 R&P. The 9lb car seemed much quicker in my opinion. To answer your question, you will most likely get more "performance" from more boost. The 4.55 will hurt your top end but will improve the acceleration of the car.

 

[Number9]

Mike's 3.0L picked up 20 RWHP just by going with the high boost. My 3.2L went up 18 RWHP just by going with the high boost. Shad at Comptech thinks something closer to 15 RWHP gain is typical with the high boost kit on a 3.2L. As Martha Stuart might say, that's a "good thing(TM)."

--twc

99 NSX-Z SC 9-lb (360 RWHP)
95 Dinan M3 SC (290 RWHP - aftercooler and high boost coming...)
95 M3 (Bone Stock)

 

[David Allen]

Number9 - is Comptech putting a warranty on their high boost kit yet?

If not, that worries me - if comptech makes something and they don't warranty it, makes me wonder...

------------------
David Allen
'00 Silverstone NSX-T
Comptech SC, Headers, Intake, Exhaust & a little Mark Basch tweakage

 

[SpaSuperCharged98]

My dealership is backing it for 120 days..I know that's not much but it helps!

Originally posted by David Allen:
Number9 - is Comptech putting a warranty on their high boost kit yet?

If not, that worries me - if comptech makes something and they don't warranty it, makes me wonder...

 

[cewhitman]

I can provide a pretty good perspective on the 996 TT vs. NSX ordeal.

When I had the 2000 NSX w/6 PSI CompTech SC, it wasn't much slower than my 996 TT (in stock form). In fact, it pulled away at lower speeds. The 996 didn't gain until 70 - 90 mph.

After round one of modifying the 996, they were equal at low speeds, then the P car pulled amazingly well over 70 - 90 mph.

I sold the NSX last fall, before more 99r modifications, but still have the Lambo 6.0 w/6.2 litre conversion. The Lambo is the same speed as the 2000 SC NSX until 130 - 140 mph. The P car now pulls from the L car at any point, and pulls really well above 70 or 80. This means: I think it would be nearly impossible to make a street NSX faster than a well modified 996 TT. However, it should be pretty easy to make a new NSX faster than a stock 996 TT, even a mildly modified 996 TT.

FYI - Most 996 TT tuners offer an initial tuning package that brings output to ~470Hp and 460 lb/ft torque. It costs $3 - $6k and can be done in a matter of hours. Second satges usually go to 500/525 Hp and run about $10k.

Also, the 996 TT is a pig. Mine weighs 3630 pounds, without a driver.


Eddie Whitman