over boost

[exevoowner]

rite boys and girls who can tell me the common causes of overboost please ??????/bananaroc

[Colin Wiltshire]

Have you got an MBC or an EBC fitted (boost controllers)?

[John TheAntique]

What is overboost?

[exevoowner]

dont have either controlers so just standard but hitting 1.1 bar most times and this morning 1.5 bar as i came off fav island does now and again hit fuel cut from ecu but i normally keep eye on it so i dont lol

[Nutter_John]

sounds like you have a leak in the boost control circuit and the wastegates are not seeing any pressure

[exevoowner]

ok i'll check them someone had a manual control fitted but removed before i brought the car so wunder if they piped it up rite lol

[Nutter_John]

by the sounds of it they did not redo it propperly , be very carefull as hitting fuel cut repeatadly is not good for the engine , also 1.5 bar is asking for bang bang rattle pop noises

[Nick Mann]

I'd have to agree - most likely cause by a mile is a split/loose/incorrectly fitted conrol pipe.

[Davezj]

My car overboosted for about a day when i accidently pulled the boost pipe off to the turbo wastegate "T" piece and by god it made a massive difference super quick car.
I realised pretty quick what had happened but could not fix it straight away so drove with very light throttle for the rest of the way home and fixed it then.
Not advisable to drive with no boost control for long, as said above by, "the knowledge bods" things can go Bang!

[exevoowner]

i know its not good but my god it puts a big smile on your face when you p$$$ all over a bmw m3 with some snotty kid drivin daddys pride n joy pmsl

[exevoowner]

rite checked all pipe work and all ok so cant seam to find wots going on did preasure test to all parts and all fine and dandy and glues guys

[Nick Mann]

Maybe a hose is plumbed wrong? Can you take photos of the control hoses?

[exevoowner]

wel this mornin it only went to 0.5 bar so think i must of found leak as there was joint at back of engine that wasnt needed ?

[BEG4ME]

Joint at back of engine? Not the hose to rear turbo actuator?

[exevoowner]

yea but the muppet who fitted boost gauge put a joint in there with ill fitting elbow joint in there when it wasnt needed at all