I was wondering if you lose boot presure with a downpipe and testpipe with stock exhaust setup.. I'm trying to keep it stock lookiing...so i dont get b**ched at... but i dont want to hinder to much performance....Thanks for the advise.
Chris

 

INstalling a downpipe and/or testpipe will free up the factory exhaust restrictions and allow your turbo to breathe better. Your turbo will spool faster and build boost at an increased rate.

You will not loose any boost, but the gains may be somewhat negated with the stock catback system installed.

 

Hey... I have my helix 3" downpipe for sale (used for 2000 miles).. ands this downpipe dosen't rattle or rub against lower bars


$100 ... lemme know