armog Posted September 16, 2021 Report Share Posted September 16, 2021 Customer does headgasket, tune has not changed but in order to run properly master fuel had to be doubled. 4ms master fuel initially and now it is at 8ms, other than a new throttle cable and a tps calibration nothing has changed except fuel pump change. Timing has been resynced and tps calibrated, even tried a map sensor calibration. Fuel pressure is stable at 40psi at idle and regulator works properly and increases with boost pressure. Runs well at 8ms but is super lean at 4ms Injectors are fic 1000cc injectors Running pump gas Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 16, 2021 Report Share Posted September 16, 2021 Do you have an old log of it running previously so you can compare pulse width etc? Quote Link to comment Share on other sites More sharing options...
armog Posted September 16, 2021 Author Report Share Posted September 16, 2021 I've noticed it getting worse over time logging it and suspected a fuel supply issue, removed tophat and inspected tank to find rust and corrosion. Correcting issue and flow testing injectors currently. Will report back if issue is still present afterwards. Quote Link to comment Share on other sites More sharing options...
armog Posted September 17, 2021 Author Report Share Posted September 17, 2021 Issue resolved. Quote Link to comment Share on other sites More sharing options...
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