Quote:
Originally Posted by evopirate
Warr,
Well I'm looking at upgrading injectors because I am planning on switching to E85 and the larger turbo. I may go bigger then the 20G-LT (which yes, this is the one i spoke of)
And I dont know whats going on with the BOV, but it flutters madly while on WOT. Not from partial like you're saying, but when i'm accelerating and its getting close to red line, it flutters.
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My IX diverter valve does the same thing but only in 4th and 5th at WOT. As far as I can ascertain this is pretty normal due to the high volume of flow in my turbo at high RPM. All the air being forced into the intake manifold is not being injested into the cylinders therefore it's creating a pressure differential in the manifold. Obviously the DV receives it's pressure source from the intake manifold and when it differs from the UICP it will flutter to balance that pressure. I higher spring rate will fix this however it will also raise the chance of bucking under part throttle release.
As long as your boost pressure is not fluctuating the valve is doing it's job. However if you notice your boost gauge swinging wildly in conjunction with the noise then you have a weak DV/BOV and need to tighten it down (if adjustable) or replace it with something able to hold the higher pressure. Sounds to me that your system is working fine.
Is there any more info you can provide?
