diagnosis needed

NavySlideby

NavySlideby

Driver
ok, so a little background. on my sr20 i had the stock sidemount with the stock recirculation valve. one day i plugged the recirculation tube and let the valve vent atmospherically. when i did that the car was running pig rich, smoked under deceleration and during idle. also when i was running at a constant speed it was kinda sputtering a bit. then when i went under full throttle, it built boost and then like surged like i had let off the gas and gotten back on, but really hard.
So anyways, plugged it back and and the problem was fixed.
My question is, ive now got a turbo e30, and its got a diverter valve on it. i can hear it blow off a little however not loud. he told me that he couldnt put a bov on it for some damn reason i cant remember. anyways, its having the same problems and i cant stand it.
Any idea why this happens and what should i do to fix it. im not sure if i can fix the diverter valve itself or just get any old recirculation valve, or get a bov and recirculate it or what. also, what else could cause these problems as im not 100% sure this is the problem sorry about the length. the smoke is sometimes black or grey, however not blue
 
does it have a wideband? how is it tuned? my bet is either theres a vaccum leak somewhere or its not tuned properly.

if you want to change the diverter valve you could put any bov on it as long as it vents the air in the intake of the turbo but after the afm.
 
I'm not sure how it was tuned but it doesn't have a wideband now, apperently it did. He said he street tuned it with a wideband but I don't know what he actually used to tune it
 
It runs rich because the computer is calibrated to expect more air(that is now being released tot he atmosphere) to be in the engine so it adds more fuel. If your diverter leads back to the intake after the MAF.
 
Dr. Dooms said:
i think this is your issue
Click to expand...

well its obvious your not helping, so why are you even posting??
obviously its my problem, however im seeking help with it

Z4K- thanks, im gonna check it out and see where its recirculating to, if its recirculating at all
 
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