I am trying to tune my coupe (ca18det autronc smc and cdi unit) the engine breaks down at 6000 rpm. I have done 3 hill climbs since buying the car in nov (it hammers even if it only goes to 6000). So I booked it in for a tune because of the missfire

the first dyno run (2 weeks ago)sure enough it breaks down at 6k the tuner tells me to put in 4 new coils (to do it my self I'll save money). We need to start somewhere.

Coils done, I dropped the car of this morning. in the arvo I get a phone call, engine is still breaking down and on the last run the oil filter blew and made a massive mess. S%*& did that stress me out. I went to the work shop to help clean up turns out the filter worked its way undone and luckily only lost about 1.5 litres.
so now I have to replace oil filter and oil, and take the car back to the tuner to find problem with breaking down. I have been told now (by the autronic dealer)to check the crank angle sensors.

hopefully the 3rd time lucky all will go well, its putting out 230 hp at 6k and 14psi now, so with 18psi and 7.2k (my aim if all goes well next time) the car should put out some great power and will be a force to recon with on the track.

any ideas why it might be breaking down?


my a14 was so easy, but I had to have more power ( it seams to come at a cost)