2.5" or 3" Straight Pipe after the cats for our cars?
#1
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2.5" or 3" Straight Pipe after the cats for our cars?
Im getting straight pipes after the cats on my z, but i have the option of 2.5 and 3" straight pipe. Whats the difference in the two?
Want a very aggressive tone,very loud attention grabbing, smooth and not crackly
Thanks i really appreciate it
Want a very aggressive tone,very loud attention grabbing, smooth and not crackly
Thanks i really appreciate it
#7
Toasty
iTrader: (4)
If its like I described and its a true dual layout, I maintain that 2.5 is better. if its a Y pipe into a single pipe then at least 3" would be ideal.
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#8
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Diminishing returns if you go too big and exhaust velocity decreases as well. Since he's describing an OEM system system with factory cats I would assume he is keeping the Y pipe setup. 3" single is all he would ever need. If this was a dual conversation, 2.25" would be fine with nothing over 2.5" max. Keep in mind, even the 'upgraded' Nismo exhaust for these cars is a 2.5" single and that exhaust doesn't make much less power than proper aftermarket exhausts on bolton cars.
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