Hey everyone Im new here i just brought my first prelude love the site too. But Ive modded my prelude with a 94 si vtec engine from japan. I took the old intake off my old accord, and im lookin to have another mod done for me soon like exhaust.

So far I have no serious engine work done just an aem cold air intake. What size exhaust pipeping do i need? 2.25 or 2.50 for allmotor applications . Its a daily driver so no forced incudtion for me unfortuantely.

 

Unless it's been tuned to run with less back-pressure, then 2.25" is good for stock-ish/light-mods N/A applications. 3" for boost. You don't really want to lose too much back-pressure on a stock motor that's been tuned/designed for it, you'll likely end up with a poor idle and other possible interresting running situations...

dp.-

 

Yeah, 2.25-2.5" is good for N/A