Pipe size?
2/23/13, 05:29 PM
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2/23/13, 09:49 PM
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2/23/13, 09:51 PM
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2/23/13, 10:06 PM
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Usually....3" piping is found on big trucks. I'm fairly certain you don't need 3" till your 600 or over, or have FI because FI increases the flow and volume. That isn't to say that N/A doesn't but not as much as FI would. It's something to look into and maybe a exhaust guru will reply on this post to clarify!
2/23/13, 10:06 PM
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Dual 2.5 in pipes are good to around 475-500 hp. After that they pose a restriction. Too big of a pipe slows the exhaust gas velocity, which in turn kills any scavenging effect that is built into the system. Much the same way that too small of a pipe kills the flow rate
2/23/13, 10:08 PM
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Dual 2.5 in pipes are good to around 475-500 hp. After that they pose a restriction. Too big of a pipe slows the exhaust gas velocity, which in turn kills any scavenging effect that is built into the system. Much the same way that too small of a pipe kills the flow rate
2/23/13, 10:14 PM
#10
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You'd be surprised how easy it is to hit those numbers with a DOHC motor. My car gained 37 hp from just a tune. For some reason Ford put a very conservative tune on the Cobras
2/23/13, 10:23 PM
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I'm talking about GT's not cobras and GT500's I just throw the cobras in the same boat as the GT500's. for cobras you guys can reach that number easily from tune,exhaust and pully swap. The SOHC GT's won't reach this without building on the engine or FI. Most people just do bolt ons.
2/23/13, 10:25 PM
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I'm talking about GT's not cobras and GT500's I just throw the cobras in the same boat as the GT500's. for cobras you guys can reach that number easily from tune,exhaust and pully swap. The SOHC GT's won't reach this without building on the engine or FI. Most people just do bolt ons.
2/23/13, 10:31 PM
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2/26/13, 04:00 PM
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Really its what you are aiming to do with the car. I don't know the math equation but its dependent on the piston size, compression ratio, bore size, what horsepower your aiming for at a specific rpm and it will give you your pipe diameter needed to obtain your goal I'm sure you could Google it
2/26/13, 09:04 PM
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IME the majority of people run 2.5in piping through the exhaust and just put the bigger tips. Personally, I hate tips that big but it does help to reduce exhaust drone.
2/26/13, 09:13 PM
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Im with you, i bought my catback specifically with the 3 inch tips to give it that sleeper exhaust look.. until you fire it up..
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