Hey guys,

I've been running this tune for a while and it seems to be running pretty well. I've just had a suspicion that it is not quite perfect. When driving next to a wall or something I can hear the engine better, and during that time I hear the turbos spool up on hard accel. When the boost gets up towards its max requested, I can hear a sort of choppy kinda whistle, and I think it's the DVs not quite holding the max boost. Car is 00 A6 2.7t. DVs are adjustable Forge Hybrid Splitters running in re-circulation mode. I can't find the max boost spec ANYWHERE for these valves. I have done a pressurized intake boost leak test and it seemed to pass that. Unfortunately, it's harder to test the actual DVs separate for the max boost they will hold. Below is a graph showing a 2nd gear pull. I am running essentially the Notorious Tune, with very few changes. No changes to boost, fueling, etc.

Thanks!

That is not a log shane, it's a picture of boost which means next to nothing.

lol.

Post the full CSV of a 3rd gear 2500-redline log, along with your mods.

WGDC is 95% all the way to redline.

I'd say you have a boost leak or your DV's aren't holding, like you said.

Any particular reason you didn't include WGDC in your picture?

Thanks. No particular reason...still learning. What does a normal/good duty cycle look like?

ok...I mean, do you rarely see a healthy 2.7t with a WGDC above 50% for example?

Thanks,
makes sense. Do you have a graph showing boost and WGDC from your car that I could see?

Perfect. Thank-you. Picture definitely lets me know what to look for.

another example - k04 knockoffs with somewhat tight wastegates.