Hi guys.
I recently bought an 05 6 speed with 138000KM on the clock.
The car runs beautifully and is pretty stock except it has a heavy duty clutch and 2kw starter. It starts within 2 turns of the engine hot or cold and pulls nicely.
I decided to remove the factory cat and resonator and fit it with a 2.5" pipe through the mid section. When i did this i spaced the second o2 sensor slightly away to try and prevent the CEL. I live in New Zealand and this is perfectly legal here. It made the car a bit louder and raspier which is fine, it also gave it quite a bit more power which is great. The only thing is that now it has this odd missfire when driving the car under load. The CEL IS NOT FLASHING or even coming on and the car pulls nicely but as you accalerate you can clearly hear the odd miss. Ive cleaned the MAF and performed a seafoam treatment and the idle is a bit smoother now but its still doing this. Seems to mainly be in first and second. The leads and plugs have definately been changed but im unsure of the age of the coils. The CEL definately works as it came up after the seafoam but dissapeared again.
Can anyone give me any ideas? Ive done a lot of searching but cant find any info really relating to a similar issue. IS it possible the second o2 sensor could cause this? i was under the impression it wouldnt. maybe the SSV, fuel pump or ecs? Or is it likely to be more of a remapping issue?
Thanks in advance
I recently bought an 05 6 speed with 138000KM on the clock.
The car runs beautifully and is pretty stock except it has a heavy duty clutch and 2kw starter. It starts within 2 turns of the engine hot or cold and pulls nicely.
I decided to remove the factory cat and resonator and fit it with a 2.5" pipe through the mid section. When i did this i spaced the second o2 sensor slightly away to try and prevent the CEL. I live in New Zealand and this is perfectly legal here. It made the car a bit louder and raspier which is fine, it also gave it quite a bit more power which is great. The only thing is that now it has this odd missfire when driving the car under load. The CEL IS NOT FLASHING or even coming on and the car pulls nicely but as you accalerate you can clearly hear the odd miss. Ive cleaned the MAF and performed a seafoam treatment and the idle is a bit smoother now but its still doing this. Seems to mainly be in first and second. The leads and plugs have definately been changed but im unsure of the age of the coils. The CEL definately works as it came up after the seafoam but dissapeared again.
Can anyone give me any ideas? Ive done a lot of searching but cant find any info really relating to a similar issue. IS it possible the second o2 sensor could cause this? i was under the impression it wouldnt. maybe the SSV, fuel pump or ecs? Or is it likely to be more of a remapping issue?
Thanks in advance
Strange missfire issue
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