2008-2010 Cobalt SS E47 ECU Tune File Only (LNF 2.0L Turbo)

  1.  Tuned Exclusively for E47 Fuel (50% Premium Gas / 50% E85 mixed)
  2. Speed Limiter Removed
  3. Electronic Torque Restrictions Removed
  4. Timing Calibrated to maximize the benefit of Ethanol blended fuel
  5. Max Boost level raised from 16psi to 24psi
  6. Retains factory “Competition Mode”
  7. Optimized Air/Fuel Ratio for increased boost levels and ethanol blended fuel
  8. Virtually no turbo lag
  9. Removes the factory “Learndown” feature found on the LNF ECU
  10. ​Works with stock 2.5 BAR MAP sensors (no need to purchase the GMPP 3.0 BAR MAP sensors)

NOW ALSO AVAILABLE FOR E54 FUEL IF YOU LIVE IN A STATE THAT STOPPED SELLING E85 AND STARTED SELLING E54.

Typical PEAK Gains from E47 Tune: +90whp/+160wtq!

Stock Tune:  240whp/245wtq (Approx 7% Drivetrain Loss)
​E47 Tune:      335whp/410wtq (Approx 360hp/440tq crank)

$449.00

LNF Dyno Chart showing horsepower and torque curves for a 2009 Chevy Cobalt SS with the RPM Motorsports E47 Tune
Dyno graph showing the horsepower and torque curves of a 2008 Chevy Cobalt SS with E47 tune
Dyno graph showing the Horsepower and Torque curves of a 2009 Chevy Cobalt SS with the E47 Tune
An example of the HPTuners VCM Editor Dashboard

YOU MUST HAVE AN HPTUNERS CABLE TO USE THIS OPTION.

This option is perfect for those who have access to an HPTuners cable, or who own one. RPM Motorsports can write you a custom file remotely using our email file service.

Simply purchase this product, and we will reach out to you so that you can email us your current or stock tune. We will rewrite your tune file with our E47 tune and email it back to you quickly. Before installing the tune you will need to make sure that you have LESS than half a tank of premium fuel in your car. You will want to add 6.5 gallons of E85, and fill the rest up with 91 or 93 octane. Before starting the car on the 50/50 blend of fuel (known commonly as E47) you will want to flash the tune file to the car.

On your first startup it is best to let the car sit and idle for a few minutes before taking for a drive. Be careful with the car until you feel comfortable with the new power level, many drivers are surprised by how much torque this tune produces and how much more responsive it makes the car.

If you want to be able to switch between our E47 tunes and our Premium Fuel Stage 1 or Stage 2 tunes, simply purchase both files and feel free to flash between them. Though be sure that all of the E85 is out of the tank before switching back to the Stage 1 or Stage 2 tunes to ensure that you do not run your engine lean.

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