Yeah below 4000rpm is generally when it happens so for example when Im cruising on the highway at 100 and I put my foot down in fifth thats when it jolts keeping in mind the 33's rev at about 3000rpm at 100km/h. Whats "cavitation", I've never heard of that term before? This is what my tuner has set my profec at:
Hi - Gain: 10%, Set Gain: 0.60, Warn: 1.10
Lo - Gain: 10%, Set Gain: 0.40, Warn:1.00
lo/hi peak: 1.03
(I always drive on Hi)
I do not have an aftermarket fuel regulator and am running the standard turbo still for series II R33
And yeah as I said I dont know if they put my car back on the dyno or they just tuned it with the standard fuel pump at 7psi because the 270hp i made is only @ the flywheel so that be lucky to be making 200rwhp which seems incredibly low considering the mods i have on the car.