The stock mid pipe is restrictive, but not 15 - 20 HP worth...smttysmth02gt said:I believe it's like 15-20 hp...
I have an o/r h pipe and trust me, you'll notice not only a new killer sound, but a little gain in power as well.
NewStangNewbee said:ha ha yeah right. i wonder what weight reductions you can do to the car because there is how you really increase your time i mean look at the *** cars all the have to make is like 4 hp because they weigh about 35 pounds
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