I have the HKS downpipe as of now. My buddy has a Helix 3" downpipe and was wondering if I'd want to trade him. I bought the HKS cause of it was suppose to keep low end, but now I have cams and a custom tune. I was just wondering if I did this if it would mess with my custom tune and if I would see any gains out of this over the smaller HKS downpipe.

Thanks

 

no significant change

 

Is that no change in the tune or more power?

Thanks Al.