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Getting the stock pre-cats off the car was much easyer for me, to drop the tranny. The bolts on the stock pre-cat are not fun to get to on the driver's side. But the testpipes are very easy, they run long side of your tranny. Some word the hp from this modd as freeing up power, not making power. But a 20 to 25 hp of making power is a ball park figure. You notice this modd on the low end more, than before, due to the wide open exhaust and no cats blocking the turbo's from spool up. So they come on line sooner with less back pressure. Notice the angle of flow and the size piping difference in pic #1 and 2..... 

Testpipes 3" are at the top in this pic. 
 STAGE V+++ Going to XII and beyond :) |
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