Hello,

I'm struggeling with negativ boost deviation at higher rpm's (see attachment). My setup is a brand new K04-64 turbo on an 2.0 TFSI, followed by a 200cpi 3inch downpipe.

I use the original Audi intake (filter inside the engine cover) with a Pipercross filter and also the original exhaust. Should look OEM - you know for what 

Any one an idea, if this could be a software problem, or and Intake/exhaust limiting issue?
Also my N75 ducty cycle could raise a little faster to compensate - in my opinion.

I'm glad for any help/hint.

Thanks and best regards,
mistertt

Dear Beaviz,

yes I also think, that it shall raise a little bit faster. I'm a bit afraid of adjusting the KFLDIMX - cause it took me hours to get the nasty overshoots (at spool up) under control 
But yeah - maybe I've to spent some more time on this map

One question - is it possible that there is also some potential in the KFLDRL (N75 linearisation map)? I copied this one from the ED35 which is also an EA113 with K04. Unfortunately I've no suitable damos/ols/kp for a CDL engine to have a look for the KFLDRL there ...

Thanks and best regards,
mistertt

Dear nyet,

I'll give it a try this evening - just raising the KFLDIMX in the higher rpm range.  Hope that the overshoot at spool up (e.g. accelerating at 5000rpm ) won't come back.

Thx and best regrads,
mistertt