[Geiger]

I have a 2006 Saleen s281sc. Has a pulley swap running 8 psi, gt500 pumps, 39# injectors, cai, full exhaust, brisk colder plugs, sr coils, and a few other little bolt ons. The car was tuned before I got it and the issue im having is when its cold under light throttle under 2500 rpm it has a hesitation and the wideband reads 19.5:1. Once you pass 2500 it reads 13.5-14.0:1 and runs fine. It runs 12.0:1 at wot. My plan for the very near future is detroit rocker cams and a retune but im wondering if my issue is tune related and that issue will resolve itself or if i need to chase that issue before i move on. The ignition parts are brand new and the fuel parts only have 5k ish miles. If i remember correctly injector pulse is shortest at warm idle which is fine so im rulling that out. Only other thing that has me wondering is the evap line that runs from the solenoid to the blower is deleted and capped off. Any input is appreciated.

 

[Geiger]

I know it sounds stupid but have you cleaned your throttle body or your MAF? That could be the issue, try that first and if not make sure your air filter isn't dirty as well!

Yeah. Ive done both and nothing changed. I have the cams now and i talked to vmp and they think its just tune so my fingers are crossed .

 

[Geiger]

Oh ok, I have a Saleen SC as well and I know the TB can get dirty pretty fast and I have catch cans on both sides. I'm running the 2.8 pulley now and just did comp cam stage 2 127350's and I'm happy with the car now just have to get it on the dyno and see where I'm at ha ha

Damn... 2.8!?! What power you shooting for? 575 ish?

 

[Geiger]

Well I will be happy with 540 or 550, Brenspeed doesn't really tune for max power they tune for drivability so they make conservative tunes so you can drive the car everyday if you want

I know in internet world 550 is nothing but in reality that will be a beast ... im hoping vmp lives up to their reputation.