4" Turbo Back Exhaust
Originally Posted by RnR Racing
kcevo, I am sure we could accomidate your EVO 7 bumper.
Originally Posted by inco9nito99
Wouldn't you lose significant low end torque from nearly no backpressure? (as compared to say a 2.5/3").
These wouldn't going on stock cars. That is why you don't see 4" systems for sale. If you see any high hp cars that looking for that extra edge they most likely won't be running a 3" system.
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