This is terrible news to hear Shumby. I really hope I don't have the same issues! Hope you get this figured out soon, this really sucks with the wifey. Good luck..

So why did stillens kit not have any issues? does anyone know the difference?

No one has LTH's and the Stillen SC yet. RCZ didn't test it out yet with the shorty headers yet?

Those should have no effect, only help generate more power. i am curious why they are having problems? This is really interesting, I am now on hold on pulling the trigger on the SC kits

With stock headers and cats all is well.

RCZ thanks for the thoughts and well wishes. I think you will be fine with the HFC and headers. The LTH are just too much free flow and the VVEL can had up to 280 deg duration if i remember correctly.


Anyone wanting the SC setup and still on stock cats or HFC should be 100% fine.

RCZ when you doing your dyno run's? I still want to beat you to this. lol

would going different sized pullies or something like that be a way around this?

that might increase the flow a bit but would take the SC out of its eff. range. so not really but not a bad thought

Not out of my efficiency range :)

Tuesday. I didnt know it was a race haha. All I gotta do is tune though.

Can someone comment more on the more aggressive pulley option?

I would keep the LTHs and all for later cuz somewhere down the line they will break the VVEL.

I think the way Stillen is doing different physical stages that this might be a more viable option to keep LTHs.

what i thought we had $100 on it lol.

same is doing different stages too. so not quite following

I thought Stillen was using different sized SC parts for their different stages while GTM was doing it by tuning but not sure.