Sometimes when slowly accelerating, till 1.5k revs it goes smooth, and then it starts to like loose power, poorly increases revs and then when it reaches 2.5k rpm's starts to rumble again :D and in that 1.5k - 2.5k revs range it sometimes just starts to twitch car so hard like to back and front that you just have no other choice than release clutch and stop that shit :D
Diagnostic doesn't show anything, AFM looks like working, Lambda sensor ok, tps seems like wokring too, etc., only I dont have cam sensor.
fuel pump is fine pierburg 3.8 bar, fpr 3.5bar, green top m50 injectors, bosch platinum sparks (with ngk's it was all the same problems).
maybe some coil problems?
and yea, most the time it just goes fine, and spools tires like mad

ok, now some good news:D
changed fpr to 3.5 bar, thanks to user whodwho for part number.

done

and some random snapshot's














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