Monday, February 16, 2009 - 04:18 pm, by: Ty Mackay(Duo89)
Hey guys my mate has a TT soarer, and he has been having a few problems, when he is driving and he guns it (not fully flat) sometimes he gets an error message that comes up for a few seconds, which is the oil temp error message, and sometimes when hes boosting for say about 20 seconds, or so, the car starts jerking? and then the message comes up, is this a big problem? or is it he is boosting to high??? and needs to turn it down?.. what do you lot think?.. he doesn't have an oil temp gauge so suggest he gets one aswell?...
Monday, February 16, 2009 - 11:09 pm, by: Shane Haverkamp(Havabeer)
boost cut is at 14psi
the turbo's should be about 10psi stock.
if anything happens and the boost goes up to and over 14psi the engines computer notice's this and says "nope thats to much for me" and stops the turbo's from boosting so high. (via waste gates and other things i think)
so it'll cut the boost it'll build back up again and it'll cut if off again. which COULD be the jerkyness your mate is getting.
i'm not sure how you test it other then a boost gauge
Monday, February 16, 2009 - 11:20 pm, by: David Ward(Djwtoyota)
I think it goes like this... MAP sensor sends intake boost pressure to ECU. ECU senses excess boost pressure above 13/14 psi. ECU says too much and cuts fuel through injectors. Boost pressure drops back below threshold, injectors put fuel in again and turbo spools up again and goes through procedure again and again till throttle is backed off
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