carace

does compared to a brand new Forge valve. Although I do not believe my stock valve is leaking boost I could not help ordering a Forge to swap during my dyno run this coming Friday. I will try and make the runs as equal as possible. I plan on using VW tool to make sure the runs are done with similar intake temps at idle. I will data log the intake temps for both runs to see if they stayed realatively close. I would love to swap the Schricks and stockers also but that would be an expensive proposition. Any other ideas to keep this fair?

AndyA6

(37,500 mls) the DV and it seems I'm back to "normal". Your tests should be ok, just try to keep the "chnageovertime" short so temps etc stay as close as possible.
Good luck!

Clark@turbo5.com

Plot wastegate %, Knock sensors and MAF ps.


Clark

Electron Man

...to test each valve's ability to get back to the original boost "spike".

I'd envision something similar to this:
1.Increase engine rpm to a point (approx.) where max boost is seen [BV closed].
2.Decrease engine rpm breifly (0.7 sec) to simulate upshift [BV open].
3.Increase engine rpm again to the level in step 1[BV open], while having an assistant monitor the response from your boost gauge.

This should tell you how much (if any) your stock bypass valve is leaking.