Diablosport troubleshooting question?
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Joined: Sep 2004
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Diablosport troubleshooting question?
I have a 2004 SCREW 5.4L 2WD and just installed the Diablo performance tune(91 octane). My vehicle mods are airaid cold air intake and Borla rear dual exhaust. With those two mods my truck has been running great. I have ran thru 2 tanks of 91 octane before installing the Diablo. My help question is this. I installed the tune with no problemm and boy did it put life into my truck. It runs with no problems or pinging, but the engine help light is on on the dash. Now I just put the original tune back in the truck and the light went off. Has anybody that has installed the Diablo had this problem and know what is causing the light to come on. Again there is no performance problems that I can feel or hear, just the engine light is on. Thanks in advance for any advice or help.
Thread Starter
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New User
Joined: Sep 2004
Posts: 10
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Thanks for responding. Im not that mechanical and the instructions seem vague to me. Should I load the diablo tune back in then do the diagnostics. And do I have the car running while I do the diagnostics. Thanks
