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So you have the BOV venting to atmosphere?Doesn't that not work well on mass air cars?Sorry,I have very little experience with that particular kind of setup.I built charge pipes for a 1.8T Golf and remember the owner wanting the BOV vented back after the mass air sensor,saying that it would make the car stumble getting back on the throttle after a shift if it wasn't routed that way.
Yurp. SR's fall on their face if you don't recirculate the BOV. If it weren't for my MINE's ECU, I'd have to recirculate mine.
1.8T's work best with diverter valves (recirculating).
That's what I thought.
Originally Posted by boostedb1mmer
the N54 is an(overly complicated) speed density system. The DME swaps back and forth between the MAP sensor and TMAP sensor. In vacuum it reads the MAP sensor. In boost(over 3psi) it flips over the 1 1/2 bar TMAP sensor located in the charge pipe.
So running a BOV is fine.
Didn't know of they had swapped to some sort of MAP based system on the turbo engines or not.Seems odd to have two MAPs-maybe it allows higher resolution to have one read full scale for vacuum,and one for boost?