HELPPPPPPPPP, getting pi$$ed off now
#1
HELPPPPPPPPP, getting pi$$ed off now
Having some trouble with the cossie at the mo and need some advice if anyone can help,
Right the prob is when the bastard reaches around 15psi/ 1bar it hits a brick wall, you can hear wot sounds like wastegate chatter, can i also add it dosent always do it just about 90% of the time, sometimes it will pull right up to 26 psi and will fly like a rocket then you change gear and it will hit the brick wall again sending you nearly into the screen lol,
List of parts ive changed are 3 bar map, act sensor, actuator, and its just had a chip from MSD , spark plugs.
Helppp please as its really starting to bug me now
Many thanks,
Steve.
Right the prob is when the bastard reaches around 15psi/ 1bar it hits a brick wall, you can hear wot sounds like wastegate chatter, can i also add it dosent always do it just about 90% of the time, sometimes it will pull right up to 26 psi and will fly like a rocket then you change gear and it will hit the brick wall again sending you nearly into the screen lol,
List of parts ive changed are 3 bar map, act sensor, actuator, and its just had a chip from MSD , spark plugs.
Helppp please as its really starting to bug me now
Many thanks,
Steve.
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#10
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you say it makes a noise like waste gate chatter! sounds to me like for some reason you are getting compressor surge, i.e the turbo is producing more air than the engine can consume, although i dont understand why it would do this intermitantly.
#15
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i had the same sort of feling .. would boost up and then felt like it hit a revlimiter and would go no further.. also sounded like it was struggling for boost..
removed filter and the airline was only just blowing through it.. how fuel was getting through was the real worry
now i change it every year only a few quid but not nice if you run low on fueling at top speed
removed filter and the airline was only just blowing through it.. how fuel was getting through was the real worry
now i change it every year only a few quid but not nice if you run low on fueling at top speed
#17
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Originally Posted by Eagle
how about fuel filter ... very overlooked point on a cosworth
#20
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Originally Posted by Moonstone Steve
as above m8 just had brand new one from MSD so that should be ok,
It deffo does it at 4k as ive just been out in it, any gear any speed,
Steve
It deffo does it at 4k as ive just been out in it, any gear any speed,
Steve
also, was it doing this before or after your chip? It could just be the ECU cutting the power because it thinks theres something wrong.
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to me given the info I have at hand it sounds like you changed from a .48 to a .63 housing and then the problem appeared, the problem as you describe it sounds like your getting surge, I would go with for some reason that is the case but I dont know why it would surge at such low boost, I may be talking bollocks but is there any restriction in your inlet system? are you getting full throttle etc, it seems that something must be stopping your engine consuming all the air that the turbo is trying to give it at 4000rpm, most odd. Obviously try the fuel filter etc just incase, also have you tried asking someone like Stu who supplied your chip if he has any ideas why it might be doing this? he obviously has a wealth of knowlage on the subject of tuning cossies and may have come across this one before.
#23
dont know of any restriction m8 if anything i think the head has a slight bit of porting to it, the secs monitor is saying 100% throttle when i nail it, going to ring Stu in the morning just to see if he can shed some light on it, just cant see why it sometimes dont do it.......crazy.
Steve.
Steve.
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you might want to check out the grounding on the ECU..
to make sure connect the grounding directly to the ECU..
pin 1 and the other one i forgot which one it is... maybe someone else here can tell you.. i thought 19 or something.. check first please
Seen this before and that was the problem..
good luck !
to make sure connect the grounding directly to the ECU..
pin 1 and the other one i forgot which one it is... maybe someone else here can tell you.. i thought 19 or something.. check first please
Seen this before and that was the problem..
good luck !