Datalog Does everything with this look ok?
- Thread starter Jayhodge335
- Start date
You are knocking. Cyl 6 is very unhappy. But cannot see anything really bad. What fuel are you using? What are the cars mods? Did it run fine before you start changing parts? When exactly did it start to misfire.
93 pump gas. It has charge pipe with bov, dci, 1 step colder NGKs, gutted down pipes, and tune. And yes and even ran fine afterwards. I didn’t notice it until maybe a couple months or so ago.
Did you gap the plugs correct? Also I remember my plugs got loose after a while, you may try to re-torque them.
Ok, cant see anything really bad. Upgrade the Intercooler to get down with IAT which will help for sure... also try to change the gas station and see if it helps. If not, lower the octane on your map tune.
Ok that’s relieving then. I was gonna do the intercooler next until this started happening so I waited until I could figure this out. And Ive tried different shells around here and also running 91 octane tune with 93 fuel and yielded the same results. Could weak coil packs cause that somewhat by chance too? I double checked some order forms and actually the coils in it are just over about a year old.
Weak coils would cause issues much sooner in the RPM´s when WOT. Having corrections in high rpm´s mostly indicate a bad fuel. Dont forget to check (or upgrade) your PCV Valve as well. High crankcase pressure is a bad thing and can cause corrections as well.
Ahhh ok almost forgot about that I’ll definitely look into that tomorrow and let you know how it is. Can it be cleaned until I can order an upgraded one if it’s clogged or not functioning properly?
I would not clean it. Its plastic and most probably it will break. Just get a proper one and install it. Its not that expensive anymore 
BTW, once there dont forget to check the PCV hose as well...
BTW, once there dont forget to check the PCV hose as well...
Ok gotcha I’ll get one otw ASAP, and I have an oil catch can so that’s been upgraded to silicone already.
So my pcv valve hasn’t got here yet but I did try something that helped a lot but problem still persists. I uploaded the same MHD tune but used the v8 map instead of the v9 and now the car can do consistent pulls up to 6K no issues but get up to 6,500 and same thing as before happens.
Just a final update. After upgrading to a metal pcv valve and a 5.5 in intercooler I pondered and followed a small hunch and replace my crankshaft position sensor as well and it runs like new again. Never had any codes for it weirdly but it was failing at top end. So all is well now. Thanks for all the help and suggestions.
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The knocking doesn't happen when you are WOT. Also your STFT in bank 1 is quite a bit lower than the other bank. Might want to investigate that.
The knocking doesn't happen when you are WOT. Also your STFT in bank 1 is quite a bit lower than the other bank. Might want to investigate that.
I believe I have one injector that’s getting weak. Plug was black but not wet and it’s new coils and plugs. Runs fine though 
