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In The Sonoran Desert
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437 Posts
Discussion Starter #1
I flushed the coolant over the weekend and installed a polished upper radiator pipe, replacing the worn rubber one. I have an APEXI BOV but the pipe installed just fine.

This morning was the first time I drove since Saturday and I noticed the boost never exceeded 11 PSI, even though on the same run up the hill the car was at 15 psi last week (same temp outside, same setting on the HKS EVC EZ) Otherwise, the car idled, and ran the same.

I have to assume something occurred to the BOV, either its spring tension setting or a hose. Does adjusting the outside ring for exhaust noise affect the boost? Seems it shouldn't but I do not know. Has anyone with an APEXI BOV experienced something similar?

Thanks
Eric
95TT BPU++
 

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why would replacing the radiator pipe have anyhting to do with the bov or boost? The bov does not regualte boost either. You probably have a boost leak somewhere search the site and look for how to search for a boost leak.
 

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In The Sonoran Desert
Joined
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437 Posts
Discussion Starter #3
The apexi BOV is mounted directly above the upper radiator pipe. A small vacuum line connects two ports on the bov. This vacuum tube goes under and around the radiator pipe. The stock pipe fit snuggly and required some pulling. I was wondering if I somehow damaged this vacuum line and if it would cause the problem I saw this morning.

If you have an apexi bov, you know precisely what I am talking about

Eric
 
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