New exhaust time

Joined
5 December 2004
Messages
216
Location
Victoria, BC, Canada
Time for a new exhaust system for the NSX! Dali Racing twin canister cat-back.

Bye-bye stock exhaust!
stockex.jpg


New n' shiny!
newex.jpg


Bolted in place
newexrear.jpg


On the ground, just tips showing
newexonground.jpg


Mods up until this point consist of:
Downforce intake Scoop
K&N filter
Procar Specials carbon fiber intake pipe
DC Sports headers
Dali Racing ECU chip
Good for 255.1 WHP

So with the exhaust installed, it was time for a little trip to my local tuning shop, Zensport, for some dyno time and basic tuning with a B&M adjustable FPR.

End result:
MAXHPTQ.gif


Not bad for a 16 year old 3.0 V6. I'm pretty pleased, goes great and finally sounds as good as it looks. The Air-Fuel ratios need some work though, so next up is gonna be a Science of Speed overbore throttle body, and an Apex'i AFC NEO.
 
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Beauty. Love the difference between the old and new Sean! I just got my steering wheel, shift knob and leather door trim piece re-dyed and they look great. The steering wheel has lost that shine and looks like a new style wheel (almost like the Corvette C6) it feels really good too!(i'll be in Victoria in a few weeks and will let you check it out in person). Way better and cheaper than replacing the said items. Cost me $180 to get them re-done with a company call Fibrenu so I heartily recommend them. (saves me money for a radar detector). Would love to hear how yours sounds now !:biggrin:
 
Hey Sean - that looks great! hows it sound? we gotta go for a drive sometime.

Thanks guys. Jason, when Aaron is in town, we should try to get a few more cars together and do some cruising!

Those are nice numbers for those mods. What were the A/Fs? The Dali chip running you lean?

Here's the HP vs. AF
HPAFR.gif

As you can see, it's up around low 14-1/high 13-1 under full throttle. The adjustable FPR doesn't help much until the fuel pump kicks over to high speed. I wonder how much the Dali chip has to do with that. I've got a stock program'd chip, so I'm tempted to swap that in and see what it does to the AFRs.
 
how would you like the a/f to read?
 
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