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87 LX with trick flow hci kit 24 lb injectors converted to maf 75 mm tb and bringing it a all together with bama chip on an 89 mustang Ecu but when I hit the key it doesn't stay running I have to hit the gas to and hold it for a few then let it go and it will finally idle 800 850 thought the tps might need adjusted but it's good then checked fuel preasure and had to adjust it a little so thought it was the problem but still same thing what do y'all think