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quick question about running rich

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DSMTurboEclipse

20+ Year Contributor
1,154
2
Jul 20, 2002
Harrisburg, Pennsylvania
i just got a TurboXS RFL BOV. since we installed it, my car has been running very rich and it stalls if i rev it to high in neutral. i was wondering if there are any easy ways to lean out my mixture. plus my car is A/T incase that changes anything....thx:talon:
 
You say it neutral so it sounds like its either leaking at idle which is causing you to run rich. Your losing that has been counted for by the MAF but you still get the same amount of fuel which will make you run rich.

You really need a BOV that re-routes
 
dave99gst and DSMJim,

Honestly, and feel free to correct me, I thought the 'UN' recirculated BOV only came into play when driving - specifically when making shifts as that is the only time the BOV will truley open. :: dunno, think so ::

But, taking into consideration that this is an automatic I can see where infact this might be a concern. Better Yet, recirculate the BOV - and at the most minimum rig up some sort of return to see if at least conditions improve - then you can decide wether the recirculation is the way to go.

The only other things that come to mind when reading this thread are:

(1) Possible intake leak after the MAS/MAF.

(2) Maybe a grounstrap issue, based on the reading I've done on this board. But I highly doubt it as putting on a new BOV should not require disconnecting the ground strap!

Just trying to get different ideas out there, no matter how slight the chances are. Hopefully others will contribute additional thoughts.

Good Luck,
 
Only thing that comes into my mind when I read this thread is sell the RFL and get a 1g bov crushed. My stock 1g bov can hold I believe 22 lbs?

Anyway the only way to stop running rich is to recirculate. Your driving your ECU crazy right now. Let me explain what is happening. Whenever you get on it and you hear your bov make that ever so sweet wiisssshhhhh its letting out air that your ecu thought was getting fed back into your intake and its giving you the fuel for that air you just dumped thus causing you to run super rich.

Only way to fix it, is to get a VPC which is anything but cheap. I hear you can lean it out with an AFC but I would even waste my time till your ready to go balls out with the car and run like 30+ lbs…. Lol

So in conclusion there is no way to make that RFL run nice or make your less choppy. I guarantee since you got that BOV your car hasn’t run smooth either. Get a 1g bov and call it a day dude.
 
there are ways of doing it, the gm maft in blow-though for ex.

that being said, for those that questioned the leakiness of bovs at idle, most of them are open under part-throttle conditions and at idle.

I don't know if you can tighten the rfl, but if so that could cure the low-load prob.

since he is an automatic, he won't be slamming the throttle plate closed nearly as much as us manual guys, so an unrecirc'ed bov won't be nearly as bad for him.
 
I am running a Type-H that IS venting to atmosphere and my car still runs fine, just like it did with the stock one...but maybe that's just me
 
well, my friend said that raising the boost will help the problem. i am running stock boost and he said if I raise the boost to 15 that i will lean out due to the added psi. would this work? thx :dsm:
 
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