PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

First startup issue...VATS?, or Mods

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Old Jun 13, 2016 | 10:33 AM
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Default First startup issue...VATS?, or Mods

My big day was a little anticlimactic.

Fired up my build for the first time, but it wont stay running.

Not quite sure what the issue is. It will start right up, then die after a few seconds.

I was told VATS was disabled.

Stock LS1, stock ecu, Twin turbos, 3 bar MAP, 80 lb injectors.

I know I will need a tune, but thought I could at least start it up and move it around etc.

welcome any thoughts.
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Old Jun 13, 2016 | 10:36 AM
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I had a similar issue when I first started my build and it ended up being a bad cam position sensor.

that said stock ecu mean stock tune? I got a baseline mail order tune before I started mine since I had a pretty long drive to get to a tuner.
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Old Jun 13, 2016 | 10:38 AM
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yes its a stock tune.

looking into a base tune, just hate to pay for a base, then again for the final tune.

Who did you get it from?
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Old Jun 13, 2016 | 10:43 AM
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I used Horse power house but they arent in business anymore. I know what you mean about double dipping on the tune, it sucks. I was just not comfortable driving it an hour away to get to a tuner, lot of money in an engine just to trash it cause I was stingy. Think I paid $200 for the mailorder, and it was fine to drive just not thrash on. course if you have a tuner closer to you, you can always have it towed.
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Old Jun 13, 2016 | 02:43 PM
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Not 100% sure, but I dont think it will run if the tune is not scaled for a 3 bar map. I wouldn't run it if its not tuned for those injectors either.
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Old Jun 13, 2016 | 04:26 PM
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Originally Posted by Jwooky
yes its a stock tune.

looking into a base tune, just hate to pay for a base, then again for the final tune.

Who did you get it from?
With your mods it will 100% not run without getting the pcm flashed.
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Old Jun 14, 2016 | 11:06 AM
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Thank you !
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