Power FC and ATMO Bovs

[shonen]

Hi guys

Just wondering if the PFC is more "sensitive" to atmo bovs than the stock ecu ??

Cause in my case the car had a greater tendency to stall after the PFC fitment.

I did get a Z32 afm at the same time would this contribute to it ?

I did plumb it back and the problem is now fixed.

Just curious to know whether if this was an unusual case for me or have anyone else experienced this on their cars ??

[jnr32r]

i had big probs with my hks bov, had to get rid of it and put in the stockie plumb back....

couldnt get it tuned at all.

[Sydneykid]

Atmo BOV's make the car run rich on throttle off. So at low rpm's, if the PFC was tuned a bit richer than the standard ECU, then there will me a higher tendancy to stall. It can be tuned out, it is quite fiddly, with leaning off the A/F ratios at low rpms and advancing the ignition timing. This CAN NOT be done on the dyno, it has to be done with road testing.

[shonen]

thanks sydney kid.

Just curious cause most of the tuners I have spoken to basically said that you shouldnt really run atmo bovs on afm equipped cars and if I REALLY want it than I should change to an ecu which runs on MAP sensors.

In my case tightening the spring tension on the bov to the hardest setting did improve the stalling issues dramatically yet the tuner still had a hard time getting rid of it.

In hindsight we found that the actually quality of the bov itself was the problem. ie it was leaking, ever so slightly but still leaking regardless.

[mkc_1971]

same problem my wat around it ran plumback the car ran heaps better with a plumback anyway but wasn't as noticable which in the end was a good thing kept the cops off my back