I just got a tune and all with CAMs retainers springs, injectors, fuel pump etc.... i was told i could make more power if i got rid of my current down pipe and put an O2 dump on. My question is, if i install it my self do i need to go and get a retune after that> or since it part of the exhaust components will it matter? How much power can i expect with it??? i was thinking MAP or ETS.... any advice and knowledge would help.

 

No you don't need a tune immediately following the install, but without a tune, you won't get any bump in power.

 

so no power bump at all unless i get a re-tune?

 

It's possible you'd see a couple horsepower just from increased flow/decreased backpressure, but the tune will get the most out of it, possibly pushing 10HP on a stock turbo or more on a bigger turbo.

 

You will need a retune. The o2 elim dp threw my tune way off...rich enough is was belching black smoke The post-tune gains were solid though!



Stock turbo, stock cams, and 93-octane pump gas.

 

thanks.... i appreciate the info