1/4 mile times roush supercharger?

[smokinzx14r]

Is everyone here a manual? I can understand a 12 second et but the car should be trapping in the 120's with 550rwhp....

With 550 HP it should be running much faster and more MPH ...With just a tune CAI and DRs I have gone 11.90s @ 117.. On street tires it has gone 12.50s , I'm guessing I'm at 400 HP with my mods .. Got to be something in your tune holding you back ..

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[JasinEdward]

With 550 HP it should be running much faster and more MPH ...With just a tune CAI and DRs I have gone 11.90s @ 117.. On street tires it has gone 12.50s , I'm guessing I'm at 400 HP with my mods .. Got to be something in your tune holding you back ..

Exactly... but the problem causing the 12 second et can be attributed to driver error and poor traction. I've watched a stock 2013 Shelby run 12.2-12.4 all night, but the car was trapping in the 120's. I'd need to see a timeslip to have a better idea...