a single exhaust system will make the most power. A 70mm is apparently proven to make the best power, but most systems out are worth to much. If you want to make even better power then go with a custom set-up. I have a custom 3 inch pipe to a sungle HKS carbon ti turbo canister. Believe me it'll show better gains then any 70mm exhaust out, and it costs half the price to make. looks a hundred times better too, and still saves a ton of weight compared to stock.

 

Do you have any dyno results? I've read quite a few places that an exhaust system does nothing for the S. Where did you get yours made?

 

no dyno with just the exhaust itself, but I'll be dynoing the car this saturday afternoon. Will post results when done.

I've also heard that getting a test pipe gives better gains then an exhaust would, but combining the two will give a decent amount of power.

I had mine custom made at Spugen her in SoCal. As far as the butt dyno goes I felt a nice increase in midrange torque(although some would argue that a 3inch would loose midrange, i however feel the opposite), and top end increase can defenitly be felt.

 

Are you going to dyno with stock exhaust then with your 3inch back to back?

If you dyno with just the 3 inch, your dyno means nothing because of several factors. You should dyno with both to see the gains and stop the spread of misinformation.

 

I would think 3" piping on a NA 2.0 would be way to big. Unlike a turbo car we need some kind of back pressure but I guess the dyno will tell the story once it's posted. The 70MM unit which is 2.76 iches is probably the limit anyone should consider without FI

 

that's what you hear from everyone, but i've heard otherwise for the "S". our car isn't a 4cyl civic motor, i've been told that combined with a test pipe a 3inch system will give better gains then a 70mm would. I trust this info considering the man has been tuning hondas, and s2000's more then anyone else out there, and is the best man for it. I've also heard the same from other members before i went with this set-up.

If i can find a stock exhaust before the dyno then maybe i can swap and see the difference.

 

does anyone have sound clips of their j's racing or t1r. It would be nice to hear what it sounds like before I buy one.

 

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