2nd Generation Specific 1986-1992 Discussion

Bac Removal, Stock Ecu, 88 T2

Old 03-13-2004, 09:28 PM
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As it seems the BAC valve is responsible for maintaining idle speed, what can I expect from removing the thing, and blocking off the spot it once occupied on the UIM?
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Old 03-13-2004, 09:49 PM
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your car may stall out when you turn the steering wheel when it is parked.
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Old 03-13-2004, 09:57 PM
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or turn on the defroster
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Old 03-13-2004, 09:58 PM
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So basically, I should leave it there until I install a standalone?
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Old 03-13-2004, 10:09 PM
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Originally Posted by 1988RedT2' date='Mar 14 2004, 03:58 AM
So basically, I should leave it there until I install a standalone?
standalone doesnt change the need for an IAC of some sort, unless you don't mind setting a relatively high idle and letting it fluctuate under the varying loads. (this is basically how my car is configured currently, but I am thinking about adding an IAC so I can setup fastidle @ cold start and at that point I might as well just use it for regular idle control too)



standalones support controlling an IAC, the haltechs support the BACV natively.
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Old 03-13-2004, 10:11 PM
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there is also no Horsepower performance gains of removing your emissions solenoids and lines.
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Old 03-13-2004, 10:59 PM
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It helped my car run better. I removed everything at one time. It really made the car feel better. Not a HP gain, but it was smoother. My car idles where it wants to now. But if I really wanted to, I could get it below 1500, but why would i do that.



The car wont stall out if you dont have power steering
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Old 03-13-2004, 11:49 PM
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i doin't understand why people go out of their ways to remove things that make the car less user friendly. THey are there for a reason.
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Old 03-14-2004, 03:05 PM
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Originally Posted by Cheers!' date='Mar 14 2004, 12:49 AM
i doin't understand why people go out of their ways to remove things that make the car less user friendly. THey are there for a reason.
I'm definitely not one of those people. The reason I'm asking this question is that I have removed the stock TID and turbo bypass valve and replaced them with a custom made TID and a Turbo XS type H34 respectively. Since the BACV draws air from the same fitting where the H34 is, I didn't want to add nipples where I didn't absolutely have to.
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Old 03-14-2004, 03:07 PM
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so u would rather remove the BAC, reroute the cooling lines? live with high idle instead of drilling a hole in your custom made inlet duct and epoxying a nipple on?
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