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are you working in the workshop on it now?
it will only run on the dyno now or pc, sounds like your immobilser has been activated and they are over riding it
so was it back firing then? and clearing when revs rise over 3k, or was it throttle lag
or was it throttle response, hesiitating when you excelerate
i was trying to build a picture up of what is happening, but your not giving out a lot of information, from previous threads, you have changed...
il re phrase that, did it tick over ok on idle when its warm
first things first! did it misfire on idle, when standing still, with no load on it?
before you start blaming the ecu, loom etc, id go back to basics.
it seems a lot of guesswork going on. surely they have had it running on the diagnostics, or crypton, you say it runs and misfires at low revs.
have they discovered what cylinder its misfiring on?
im after a 600ss exhaust, well the front downpipe and the collector box mines rotten
have you got the downpipes still and end can cheers!
