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3" straight VS. 4" staight

528 views 4 replies 5 participants last post by  BigB82789 
#1 ·
What differences in performance will there be from the stock 3" to aftermarket 4". ??
 
#3 ·
EGt decrease is what you'll notice the most, BTW 4in. straight sounds much better than 3in. straght pipes.
 
#4 ·
The sound is so much better. It was very noticable that I gained low end power when I put the 4" exhaust on. I'm talkin 1000 to 1400 RPM low end.
 
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