Whats causes the scoob to over boost?

Mine has started to do this now for a while, so only running on low boost (ecuteck map) tried to give it a run in high boost but the CEL come on and left it on low boost...

Looking for some help on fixing?


Ricey

 

check all your vacum pipe as a small split will cause over boost is it ticking over a little lumpy??

 

could be your acctuator chap,, i experienced this problem on a evo 7 i previously owned and it turned out to be the actuator... there are a few easy tests you can do,, i.e. soapy water on actuator where rod exits see if it bubbles on idle or with slight revs, or disconnect the vacuum to it and attach a foot pump and see if air escapes when pumped..


worth a try!! hope this can help

regards sam

 

Speak to your mapper

 

Thanks for the info guys, i'll check the pipes and do the test. I'll send Andy F an email and see what he says. Hopefully be getting a map tweak soon too.

Ricey

 

Im new to these cars, but on my old MR2 turbo, so also a 2l tubby, fitting a 3'' exhaust system straight through caused a world of overboost problems.

Maybe if you have fitted a new downpipe the wategate could be catching? We used to have these problems with cheap downpipes- they just needed grinding

 

Not fitted anything else since it was mapped in 07, so I guessing it could be the actuator, but i'll find out soon when its tweaked.

THanks for all help!

Ricey

 

I doubt it is the actuator.

 

What do you reckon it could be then Duncan?

I've got 130k on the OE turbo Had an smoke test on all my pipes done nothing showed up.

Ricey

 

Someone suggested this problem could be fuel cut? What casues that? PLus I ment to ay the CEL has came back on after it was turned off during the Map.

Ricey

 

There are lots of CEL codes.

I suspect it will be an overboost fuel cut CEL - it might just need the limits raising or it might need the wastegate duty tables trimmed slightly to stop it overboosting depending on how seriously overboosting it is and whether the engine is happy with it.

Depends on the CEL code though really. Can you get the car to someone local with the relevant software or code reader?

 

I can get local garage with delta dash, would that be able to tell workout what the problem is?

Thanks for your help Duncan.

Ricey

 

where are you based?