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Ok if anyones had this prob with their r33 i need some advice, cars giving me the shits big time. It an R31 i just finished fitting a series2 rb25, its got a fmic and blitz BOV, standard everything else running 6psi. The prob is this, when i give it alot of shit, particularly after doing a big 2nd gear snaky in the wet, then back off, it blows a CRAPLOAD of smoke out the exhaust, but ONLY when i back off, not on acceleration. it cant figure out whether its fuel smoke or oil smoke.

Also, after only about 1000k's of driving i removed my cooler to find it chockas full of oil. Ive got a spare turbo thinking that was it but they both do exactly the same thing, and both turbs seem fine. I was thinking along the lines of overfuelling due to a non plumb-back bov but seriously the road behind me is lost in the smoke its ridiculous.

Also very strong smoke smell coming into the cab all the time while driving, but no leaks anywhere that i can see. Have i got two stuffed turbs?

Cheers steve

P.S. oil breather is blocked so its not that

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not too sure myself, but i can offer that burning oil will look blue and running too rich will be black...

is your bumper full of 'soot' after a drive? if so probably running too rich.

have soemone drive behind you when this happens and get them to do an assessment of the colour and amount of smoke coming out

most cars blow a puff of black smoke on a full throttle change due to the rich nature of the fuel maps...

i can make some suggestions but they are by no means from anything other than my own personal experience and i ain't no mechanic:

- try changing your plugs (gap them to 0.8mm)

- try changing your O2 sensor (same asthe one from the EL falcon apparently)

oh and it could just be your BOV, try putting the stocker back on and see how it goes

good luck!

Waz.

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