Turbo BP4W randomly stops firing cyl 1 & 4
#1
Turbo BP4W randomly stops firing cyl 1 & 4
So I recently bought a turbo NB that came with an FM kit ad Voodoo box. Honestly, the car ran like absolute crap when I first got it, didn't have good spark plugs, and questionable previous ownership but it was all pretty much "there"
I bought a MS2pnp and set the initial settings including the base timing and getting the idle right, AFRs are pretty good and are around 11 under boost and I still need a tune and larger injectors. While I'm waiting on a laptop battery (of course it goes bad now!) the car randomly decided to sound like a subaru and refused to idle. I initially assumed a vacuum leak but didn't find anything, I changed my plugs and wires (NGK blues, BKR7E plugs) and the problem was lessened, cyl 1 and 4 were soaking wet. but the problem still persists. It seems that when i remove spark plug wire 2, run the car, 1 ad 4 begin firing again and I can plug in 2 and the car is back to normal and drives normally. As far as I understand it, the coilpacks on these cars are awful and I'm wondering if I should switch to a COP kit. Any suggestions?
Attached is a datalog after it
I bought a MS2pnp and set the initial settings including the base timing and getting the idle right, AFRs are pretty good and are around 11 under boost and I still need a tune and larger injectors. While I'm waiting on a laptop battery (of course it goes bad now!) the car randomly decided to sound like a subaru and refused to idle. I initially assumed a vacuum leak but didn't find anything, I changed my plugs and wires (NGK blues, BKR7E plugs) and the problem was lessened, cyl 1 and 4 were soaking wet. but the problem still persists. It seems that when i remove spark plug wire 2, run the car, 1 ad 4 begin firing again and I can plug in 2 and the car is back to normal and drives normally. As far as I understand it, the coilpacks on these cars are awful and I'm wondering if I should switch to a COP kit. Any suggestions?
Attached is a datalog after it
#3
If the coil pack is indeed bad and you're on a budget, the easiest solution is to just get a new one or one off of a running parts car. Key is to get proof that it works: a video of it running, reputable dealer, seeing it in person, etc. COP is not a bad upgrade if you can spare it, but it's not necessary.
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