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Discussion Starter · #1 ·
I've have a 93.5 6Spd. Dp, Exhaust, BCC, Profec B. Last night I was out was hitting at least 20 Psi by 6000RPM. I tried turning the boost controller down but no change in boost. Could be the boost controller, but how much does cold weather( below freezing) play in boost pressure. Usually I get about 15-16 on this setting.

Thanks
 

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Lets go Nets
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Um in my AVC-R when it doesn't compensate for fuzzy logic, it overboosts big time, I have to turn it down a bit in the cold weather. air more dense? more psi for the same amount of work? idk, but just turn down your BC even more, trust me its all in the BC.

-Brett
 

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That could just be your lowest possible boost in this weather. When I was on the stock twins, even with my EBC off or turned all the way down, I would hit 21psi in very cold weather.
 

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VeilsideTT said:
That could just be your lowest possible boost in this weather. When I was on the stock twins, even with my EBC off or turned all the way down, I would hit 21psi in very cold weather.
True 'dat.

Boost controllers only allow you to *raise* boost on stock twins in warm weather. The tiny wastegate prevents you from lowering boost below 16-17 psi, or even more, unless it's really hot out or you live at high altitude.

Which is why I don't believe in spending much money on a fancy EBC that is at the mercy of weather and the crappy wastegate.
 

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Wheelhophobia?
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I always overboost in the cold weather. It's normal. Just keep some race gas in there to be safe!
 

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I use to over boost like crazy when I was on stock twins. I would often see 1.4 bar and as much as 1.5 bar. Sadly this lead to the demise of my stock pea shooters. On the up side my car was under warranty so I got a fresh set. My EBC, the EVC EZ could not control the boost in the sense that I could turn it down. My friend running a similar set-up to me had a different boost controller, the EVC 4. The EVC4 prevented him from ever overboosting.
 

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Discussion Starter · #7 ·
Thanks for the help. I had this problem once before but it was summertime and I had just blown the cap off the wastegate actuator. I thought this was the problem but not so. I knew cooler air =less dense air therefore more boost, but not to the point where there is no control over boost pressure. :mad:
 

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aswiftsupra1 said:
Thanks for the help. I had this problem once before but it was summertime and I had just blown the cap off the wastegate actuator. I thought this was the problem but not so. I knew cooler air =less dense air therefore more boost, but not to the point where there is no control over boost pressure. :mad:
Cooler = More dense. :)
 

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does anyone know if wastegate going directly to air instead of to exhaust will reduce overboosting? i'm guessing to would be better to air as less resistance=more flow out of waste gate - though it would also be a hell of a lot louder
 
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