Originally Posted by kptrk
I have a 95 neon sohc 2.0L that I am planning on building for track use. I would like to hear some opinions on which would be a better idea for this car...giving it a straight pipe or buying an aftermarket exhaust with cat, muffler, etc. I am leaning towards straight piping the car due to the expense of a exhaust kit, and Im not willing to pay hundreds of dollars more just to get 5-10 hp. Is chopping off the old exhaust and just fabricating some new pipes good enough? How much time/money would go into custom making pipes? Any help will be apprecieated.
2.5" straight back is your best bet. Backpressure is a thing the old farts say you must have on N/A engines but really isnt true... On every test ive seen with straight pipes on N/A engines they gain A LOT more power than muffler/cat equipped exhausts. I'm assuming you want to use this car for SCCA purposes? They have tons of classes with Neons in them and most of them run open exhausts and have N/A engines still...so that might tell you something. In a recent test I saw they pitted your typical aftermarket exhaust (I believe it was a Greddy) on a stock B16a1 Honda engine against a 2.5" straight pipe from the header back and the 2.5" exhaust simply killed the aftermarket exhaust in power. The aftermarket exhaust gained 5-6whp while the 2.5" straight pipe gained a peak of 15whp and 10whp across most the rev range.
And let's be honest here...
Aftermarket Exhaust for a SOHC neon - around $400
2.5" Straight pipe mandrel bent - maybe $150 at the most
1990 Honda Accord LX Sedan
Mileage Ticker: 232,400 Miles
Stereo Mods: Coming soon...
Blow your mind~