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Does HHP have a proven tune for hellcat 4.5L Whipple, 4" pulley, E85, ID1300 using HPTuner? HHP Racing In-House Street & Dyno Tuning for 5.7/6.1/6.4L Vehicles
Started with HHP's 93 Octane Whipple 4.5L Diablo tune with 4.75" pulley.
Subsequently developed to E85, 3 bar MAP and 4.00" pulley using HP Tuners.
Speed flat-lined at 190 MPH on mile run without code, just tripped ESP throttle source.
Car has done over 203 in the mile.
After a new sc bypass valve and a bunch of tuner meddling I am now getting bypass valve codes/limp mode.
I need a known good tune for my current set-up like HHP provided when I started modding this.
Thanks, Chuck
Subsequently developed to E85, 3 bar MAP and 4.00" pulley using HP Tuners.
Speed flat-lined at 190 MPH on mile run without code, just tripped ESP throttle source.
Car has done over 203 in the mile.
After a new sc bypass valve and a bunch of tuner meddling I am now getting bypass valve codes/limp mode.
I need a known good tune for my current set-up like HHP provided when I started modding this.
Thanks, Chuck
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Open Mar 23, 2025 - 10:14 AM
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HHP Racing In-House Street & Dyno Tuning for 5.7/6.1/6.4L Vehicles
Is your HEMI not running right or just looking to get the most out of your car? The solution is custom tuning from a trusted CMR tuner such as HHP. We've had awesome success with our tunes and we've not only been able to release awesome power from these vehicles, we've also been able to ...
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