Hello, have there a car, 180hp (Seat Leon DE file), with k03s with K04-23 internals, exhaust, intake, 440cc injectors+walbro pump. Stock MAF. Targeting 1.3bar constant then tapering naturaly. KTRKE+tvub+fkkvs modified for new injectors , trims ok, AFR at WOT also(peak 15ms). Around 5500rpm boost instantly drop from almost 1.2 to 0.9bar (cca from 180 to 150 load).No knock. No change in specified boost or specified load at situation. VCDS doesnt showing change of WGDC maxed at these rpm) which is weird. No DTC errors of course.
Tried off torque monitoring and armd (hope correctly).
MLMAX rised (never did before)
Two times rised KFMIRL( over 210 on 100% row)+ acordingly made KFMIOP + even KFMI_UM
Obviosus limiters MAF,pressureratio ect are rised several times also.
Tried different N75, the same, Tried high rpm pull with actuator hose off and no drop.
On stock file runs 0.6-0.5bar constantly to limiter, specified load+boost matched actual.
Tried lower boost to around 1bar(cca 165load), it drops also but little later around 6000rpm.
Sorry, tried to connect ME7logger, but recieved 0x1 init error, and VCDS logs nobody download(i can send of course).
Is there something different in 150/180 files against 210/225 ?
I never read about this problem, but it must be common on K04ed 150/180hp cars, isnt?