Tial BOV opens/ stutters while on boost

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Dec 16, 2010, 12:30 AM

#16

deej1

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This table should help you out.

Quote:

Originally Posted by 95630706

I'm too stupid to figure out boost error correction LOL. I 'm currently just using gear dependant WGDC like an EBC with everything else 0'd out. I think that will be my next venture once I get my SD tune nailed down. but yea that seems to be it.

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Dec 17, 2010, 08:36 AM

#17

95630706

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Quote:

Originally Posted by FlintownKilla

I vote the spring is too stiff, drivability is directly affected by the bov being adj. correctly. I lucked out with a APS twin vent and when the spring is too stiff, there is part throttle flutter and abrupt blow off under heavy throttle light lift-off

So, I got me a "-3 PSI" spring appropriately colored bright pink. Works great, seems to hold 25+ PSI and the lift off flutter is now completely gone. Night and day difference in drivability going from the -8 and -10 PSI springs.

Thanks for the tip

Last edited by 95630706; Dec 17, 2010 at 09:12 AM.

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Dec 17, 2010, 12:50 PM

#18

95630706

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deej1, I am not completely sure what this table does. I could not find a description in Merlin's guide. I did however try your values (my default was straight 100's). Combined with judicial WGDC settings and lowering the WGDC 100% below "X" load the "surge" is now gone. pulls nicely through the gears.

So combination of softer BOV spring and a less aggressive boost profile and this little HKS turbo is a blast! Thanks for the help.

Last edited by 95630706; Dec 18, 2010 at 08:15 AM.

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Apr 26, 2011, 08:53 AM

#19

Hiboost

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Quote:

Originally Posted by 95630706

I just recently switched to a GTX30 and with the stock BOV crushed (Evo X) I had perfect drivability. When I switched over to the Tial QR BOV it appears that the 10 psi spring is too stiff for daily driving part throttle boost. Car bucks on throttle close and flutters at 10-20 psi at partial throttle. Go WOT and all is well.

I guess I'm ordering a lower 6 psi rated spring to see if I can make the car livable again!