njdaewoo
Newish Member
- Joined
- Nov 29, 2022
- Messages
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I recently installed the water meth kit to my JB4 18 STINGER GT2. with my initial test drive I took the boost up to 9PSI very quickly and the wmi gauge started to go from 100 to 80 back and forth rapidly. It sounded like the pump was running even though I didn't have my foot on the gas because of my concern that it should stay at 100%.
The misfire code P0303 popped up on the dash with a very rough running engine. i had to pull over and stop the engine immediately. I killed the engine and started it back up. If I gave it about 40 % throttle it would run rough again. I'm going to check the grounds but what else would cause this type of problem? I have been running map 4 for the last 8 months with no problems.
WMI SETTINGS ARE:
50 mixture
60 scale
9 psi
The misfire code P0303 popped up on the dash with a very rough running engine. i had to pull over and stop the engine immediately. I killed the engine and started it back up. If I gave it about 40 % throttle it would run rough again. I'm going to check the grounds but what else would cause this type of problem? I have been running map 4 for the last 8 months with no problems.
WMI SETTINGS ARE:
50 mixture
60 scale
9 psi