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Backfiring is usually from restarted timing. loosen the screws on your crank angle sensor and turn it full clock wise if it pings wind it back a tad.

Also check that your igniter is earthing properly, my car was running retarded timing even with CAS turned fully clock wise until I ran a separate earth wire too my igniter.

You have now repeated that twice. Do you feel that you should be offering this advice knowing the consequences of what you are suggesting?

  • 2 weeks later...

I havent had a chance to order new coilpacks yet. funds have been tight!(despite working for a banke :D so car still missfires when you rev over 4500-5000. I redid all the solder connections in my AFM about a month ago and have replaced my O2 sensor im still stuggling to get 300km to a tank.

When baking off the gas to change gears im getting alot of backfire. especially when downshifting/engine breaking. Ive been reading around heaps and am wondering how big an impact my atmosphere blowoff has on fuel economy (despite being illegal id hate to lose the "ptsuuuu" sound of my blowoff) ? In the last week ive started to get exhaust soot all over my rear bar. This hasnt been a problem before??? whats going on things seem to be

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