170 whp, is that a butt dyno assessment.
What's your power goal?



It really depends on how far you want to build up your car. I'd recommend a 2.5' exhaust system to someone who's planning on boring to 2.0L and going with big lift, high duration cams. I've read an article on team-integra that states a 2.25' exhaust system can support up to 210HP @ the flywheel (about 180-185 whp).