I?m working to chase down a weird misfire issue and wanted some guidance. I?m not sure if this is tune related but it?s has been happening for the 2 years I have owned the car and it only happens during the very specific driving situations mentioned below. I have let it go since I almost never see heavy traffic and this is where it happens.
So far I moved the coils and changed all plugs and wires BR7 EF gapped at .026 to see if the misfire would ?move? but it didn?t. The miss on 4 occurs only when driving very slow 5-10mph with a small amount of throttle/feathering to maintain that speed. All traction control lights will turn on and the idle will go rough along with hard shifting. If I increase speed for a few seconds the lights will go off and the miss will stop. I get code P0300 and P0304 along with C0561 with CEL.
I am very new to HP tuners and have only read the car and done 1 upload. I have yet to log the issue as I can duplicate it at will. I have attached the current tune for some opinions if it is a tune issue. I would like to post a log as well. Any thought on the channel selections? The car runs very well otherwise.
I have attached a log I did to day and you can see the misfire count on 4 climb to over 100 when in this driving condition. Any other suggestions or ideas. Praying for a a bad injector at this point.
Mods
2.38 upper
long tubes
Airraid
ID1300s(plan was to go E in the future)
Alky Meth
6-11-2022 misfire log.hplTune 12-10-21 .hpt