Compression Ignition Addict
Join Date: Feb 2007
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whats the real difference in stock 3.5 stright pipe exhaust vs 4 inch stright pipe?
I know i need to get rid of the flat down pipe on my obs. I'm wondering if i should just delete the cat & muffler on my truck?
If that 1/2inch really going to make any real difference?
I went threw all this on mustangs and that would be like going from stock 2 1/4 duals to 2.5 inch. Not really any difference unless you move more air/fuel threw it.
p.s Unlike a n/a gas engine the cold air intake on the truck actually made a noticeable difference.
I have a tymar intake on my truck. I know that unlike a gas engine since i have a turbo it is enough back pressure and the stock muffler/cat are chocking it.
Only other mod my truck will see is a chip down the road.
I'm stuck stright pipe the stock exhaust and get a down pipe or go with a complete 4 inch turbo back?
EDIT :Who would have know i spelled straight wrong twice in the title lol
70 Dodge Charger R/T
97 ram 2500 cc 12v 4x4 5 speed turned up pump,4 inch straight pipe
89 GT Mustang 357W vic jr heads/intake, proform 750 Carb tremec 5 speed, 31 spline diff 4.10 rear, complete drag suspension, Mega bite sr lowers ect Sold
Last edited by 95PDXLT; 04-26-2007 at 11:11 AM.