2MUCHKW Member 350 Member For: 18y 7m 15d Posted 29/05/08 01:16 PM Share Posted 29/05/08 01:16 PM PCM has detected overboost bloke.Has the car been tuned ... if so take it back and get them to retune it Link to comment Share on other sites More sharing options...
Dagabond Bored Member Administrator 35,722 Member For: 22y 20d Gender: Male Location: Dé·jà vu Posted 29/05/08 04:41 PM Share Posted 29/05/08 04:41 PM Why the hell are you bouncing it off the limiter.... Link to comment Share on other sites More sharing options...
straughsberry Donating Members 1,846 Member For: 17y 3m 16d Gender: Male Location: Broady, Melbourne Posted 29/05/08 05:15 PM Share Posted 29/05/08 05:15 PM Next time you change plugs get pre-gapped plugs. Gapping them yourself can damage the tip and they can end up not lasting as long or not handling the boost. I had manually gapped plugs that only lasted about 8000km before they started to fail in the way of a missfire under heavy acceleration. this was at arounf 15psi. Part numbers are NGK bkr6eix or 1 colder is the NGK bkr7eix which is what I am using. These are pre-gapped and you should be able to get them for around 15 bucks each I. You could have the symptoms of more than 1 issue. Link to comment Share on other sites More sharing options...
sledxr Member 23 Member For: 16y 11m 9d Posted 29/05/08 08:48 PM Share Posted 29/05/08 08:48 PM when I had my capa tune done my tunner told me he had to replace the plugs as the standard plugs make it break down at high revs which it states in the capa tuning advice, I dont know which ones he used but they were only about ten bucks each, Link to comment Share on other sites More sharing options...
Sweet EB Member 27 Member For: 19y 1m 6d Gender: Male Posted 30/05/08 06:15 AM Author Share Posted 30/05/08 06:15 AM (edited) Thanks for all your replies. Just a couple of things I am asking myself, If it was valve springs, would it still keep misfiring once the revs are brought back to idle?? and I guess the same goes with the type of plug?I am just trying to relate these issues to past experience with older cars I have had. I'v have V8's that have had valve float and I know the noise that you are talking about but when it happened to my old V8 it would kinda breakdown at peak revs but once the revs were brought back to a reasonable level it would go away straight away.The plugs idea is something that I have never experienced. I know I have read that boosted engines need a strong spark in order for the boost pressure to not blow it out. If the spark was getting blown out would the injector flood this cylinder and make it misfire for a while after?? I guess that sounds possible.Over boost is something that would be quite possible. Would this remain in this mode for a couple of minutes after?? We are going to clean the boost solenoid tonight to see if that does anything. It is sticky and taking little while to come on boost then maybe it is taking longer to control boost at the top and making it over boost long enough for the computer to intervene As for using the engine at peak revs, It is just giving it a good squirt now and again. The engine is just soooo smooth that sometimes you are hitting the limited before you think you are near it as in 1st it gets there so quick. I just thought that being a performance engine that it should be able to cope with 6000rpm from time to time without a problem. My misses 4cyl Camry can cope with it and it is far from a performance engine..I am very close to buying one myself as they are such an awesome package. Just want to see if I could suss out whats going on with this car in order for me to be able to deal with it with the one I buy. Edited 30/05/08 06:17 AM by Sweet EB Link to comment Share on other sites More sharing options...
YPURV4 KILL,KILL,KILL,DIE,DIE,DIE, Member 2,813 Member For: 18y 7m Gender: Male Posted 30/05/08 06:52 AM Share Posted 30/05/08 06:52 AM Thanks for all your replies. Just a couple of things I am asking myself, If it was valve springs, would it still keep misfiring once the revs are brought back to idle?? \Yes. mine did the same thing after they floted in high revs, even after I turned the car off when I started it again it a had a misfire, onyl after about 20 mins it went back to normal, untile I hit high revs again. Link to comment Share on other sites More sharing options...
Sweet EB Member 27 Member For: 19y 1m 6d Gender: Male Posted 30/05/08 07:05 AM Author Share Posted 30/05/08 07:05 AM Yes. mine did the same thing after they floted in high revs, even after I turned the car off when I started it again it a had a misfire, onyl after about 20 mins it went back to normal, untile I hit high revs again.Ahhh, valve springs!!! Why is it always the most expensive thing when a problem happens.Might be a bit out of my league doing it myself. I have done a couple of E series head gaskets and that is a main in the arse job.Thanks for everyones suggestions. Awesome forum site too. Link to comment Share on other sites More sharing options...
hanra Into the laaaake Member 1,532 Member For: 17y 5m 20d Gender: Male Location: Nrth Qld Posted 30/05/08 07:27 AM Share Posted 30/05/08 07:27 AM I had Atomic springs fitted for $495. I supplied them. Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 7m 6d Gender: Male Location: central coast Posted 30/05/08 10:04 AM Share Posted 30/05/08 10:04 AM what ever you get done to it learn to drive the poor sucker so ,you don't hit the limiter all the time I know it can sneak up on you some times but it's best to avoid it Link to comment Share on other sites More sharing options...
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