I read in an earlier post about someone who installed the Helix 3" downpipe and got stalling issues at low speeds, i.e. backing up and full turns. Is that downpipe related or does he have other issues? If the 3 incher brings up problems, I may just stick with 2.5".

 

yeah i heard with 3 inch DP.. u loose alil bit of torque on the low side for bigger benefits on top side... thats why some people prefer 2.75s

 

That's nice, everyone knows that. That doesn't answer my question. Nowhere in my post do I mention "torque" or "top end". To make it simple, are there any 3" downpipe related issues that would lead to stalling?

 

Yeah, Inariv5573, I believe that was my post. When I first installed my helix 3in dp I had low speed stalling issues. I tightened up the throttle cable a little bit, and that seemed to help. After a day or two, the ecu adjusted and I havent had any stalling problems since. But it seems like my stock catalytic converter might be going to poo. Not that big of a deal, since I planned on doing a turbo back exhaust eventually anyhow.