Never saw this last post Yep you're right the 28th has been and gone...and the verdict was....some major boost retarding going on
Basically too much timing being pulled by the ECU. I managed to hook up some timing control, but am in the process of getting it tuned to counter the N/A tune on the factory ECU.
Seems to be the timing around 2700rpm which is causing the issue. You can drive around fairly sedately without it dropping the timing...open the throttle to above 85% and a ping at about 2700 will drop power badly.
Ideally it would be nice to have a GT-t ECU to adjust with the e-manage, as the factory tune would be a lot more forgiving to begin with
Pre-turbo the power would seem like it was taking forever to move the car from 0-3000rpm...then it'd get going a bit.
With the turbo on the torque seems to have jumped up a fair bit, the car is much more tractive in any gear. From 5000rpm to redline, it lets rip!
Also thanks to another post, here are the cam and lifter specs for most Nissan engines...note that the R33 skyline cams are the same DE & DET...and the R34 has solid lifters.
http://www.tomei-p.co.jp/_2003web-catalogu...haft-specs.html
With respect to the amount of boost being run...it's basically as much as you can run before it pings...if possible with a decent tune you could run 12psi...but it's just *can* it physically be tuned at this level without detonation.