NoPistons -Mazda Rx7 & Rx8 Rotary Forum
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NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   Please Help Sstop Compressor Surge (https://www.nopistons.com/2nd-generation-specific-17/please-help-sstop-compressor-surge-43425/)

drunkin_idiot 01-20-2005 01:26 AM
OK I had a crappy turbo xs bov the cheapest one and got compressor surge, now I have the apexi twin chamber I just got today, It still barely blows off its like a quick pitiful psst but my car still flutter like compressor surge like it always has.. I have the vac line hooked right from where the stock vac lin for the bypass valve went, no "T's".How would i adjust my apex bov for the best flow for 10psi, really soft or hard, any input would be great.

Lionheart240 01-20-2005 10:13 AM
Having any BOV, it's strange that you're experiencing compressor surge. I don't suppose our cars had stock shutter valves did they? I know that in my friend's CA18'd 240SX, he has no BOV, but the shutter valve sounds just LIKE compressor surge where it's like "chu chu chu chuuu" somethin like that..



As long as all the vacuum lines are hooked up correctly, you shouldn't be experiencing compressor surge.

cymfc3s 01-20-2005 11:14 AM
are you sure your just mistaking compressor surge for hesitation because your BOV is venting to atmosphere instead of back into the intake?? Im not sure if you are running a stand alone or the stock ecu. But the stock ecu gets grumpy if your BOV vents to atmosphere....

sureshot 01-20-2005 11:56 AM
Is your waste gate ported?

In the cold winter air, the turbo puts out way more boost.

drunkin_idiot 01-20-2005 12:05 PM
Originally Posted by cymfc3s' date='Jan 20 2005, 10:13 AM
are you sure your just mistaking compressor surge for hesitation because your BOV is venting to atmosphere instead of back into the intake?? Im not sure if you are running a stand alone or the stock ecu. But the stock ecu gets grumpy if your BOV vents to atmosphere....

No its not hesitation, I know the stock ecu sucks, its not hing like that, im running 10psi and my bov barely vent same as the last one I had, and its making the chu chu chu! sound like compressor surge.



Originally Posted by sureshot' date='Jan 20 2005, 10:56 AM
Is your waste gate ported?

In the cold winter air, the turbo puts out way more boost.

Why does that matter, im running 10psi I can see it on my gauge,LOL

sureshot 01-20-2005 01:00 PM
OK - is the BOV control hose tapped in after the TB?



Is the restrictor pill only in the pressure sensor line?

drunkin_idiot 01-20-2005 01:00 PM
No the line is going straight from the uim to the bov

sureshot 01-20-2005 01:04 PM
OK (the UIM is after the TB)



What about the restrictor pill?

drunkin_idiot 01-20-2005 01:08 PM
Dont have one i dont think, what line would it have been in?I think I have them somewhere, I hope.

sureshot 01-20-2005 01:20 PM
Originally Posted by drunkin_idiot' date='Jan 20 2005, 11:08 AM
Dont have one i dont think, what line would it have been in?I think I have them somewhere, I hope.

It should be towards the pressure sensor, to buffer it from surges & spikes.



Some Tee off that hose for the BOV, you just need to Tee on the manifold side of the restrictor.



It sounds like you ran a seperate hose. Cool..


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