hero2zero

Had the same problem on a custom tune that I developed and tweaked over time. Didn't realize it was my tune until I flashed Cobb Stage 1 OTS and it went away. Can't help but think something was way wrong with my tune and the potential harm to the motor. This is why I leave it to the pros.

Quoting myself for an update. I pulled #2 and #4 injectors and tested with a multimeter. #4 sits at 12.5 ohms and #2 measured around 12.0. I'm not sure what the tolerances are supposed to be, but it seems that 12.5 might be a bit out of range. I switched them on install and, sure enough, started detecting misfires on cylinder 2 (using btssm). Gotta head to Hueberger for a new injector.

I'll have to give them a call, but I vaguely remember them saying 500. But, that could mean anything considering 500cc itself would be low. I know there's an older misfire-related thread on this forum that I've read front to back (~43 pages), but I couldn't find an instance of anyone having their injectors cleaned only to find that the injector was bad. I'll pull it today, check the connection, and swap one more time. Thanks for your input.

A few weeks ago, I got a P0302 Cylinder #2 misfire code. The misfire only ever happens at idle. I checked the spark plug which looked pretty good. I swapped coils with cylinder #1. Still got the code at idle after I cleared it. Then, I swapped the fuel injector with cylinder #4. The misfire followed (P0304). So, I removed all the injectors, labeled them, and sent them off to be serviced. The tech told me that there were no problems with the injectors ("they all are flowing fine..."). I re-installed the injectors in the same locations, but today I got a P0304--the same location they were installed before I sent them off. Is it possible that the injector is bad and they missed it during testing? Seems like an obvious answer, but has anyone ever had this happen to them? I used these guys: http://accurateis.com/store/index.php