Any help on the following issue is greatly appreciated.
First, about the car a little bit. The chassis is a 92 miata with all stock wiring. I completed a 1.8 swap in the usual manner, using the 92 coils, sensors, everything electronic. Prior to the swap I had the car running on a V1.3 MSPNP2, but not tuned. The 1.8 motor is essentially a 99 motor, but with stock 94 low compression 8.8:1 pistons. The motor has the FM2 Turbo kit on it. I have ID1000 injectors and I am using a 99 fuel rail with this (http://s29.postimg.org/bnr9b1hqf/photo_7.jpg
) type of stock fuel pressure regulator bolted to the end of the rail for the return line. Currently running 7-8 psi with the turbo kit.
Now, a little bit about what the car is doing. The car runs fantastic at the moment under just about all scenarios. Pulls well, sounds good, everything seems great. There are 3 issues:
The first issue is, under full throttle (and from what I can tell, ONLY under full throttle) the car BUCKS, HARD at 3800 RPM (and above, just keeps bucking). The car will rev out under partial throttle and not quite full boost, about 4-5 psi if I modulate the throttle. I have read around about this and there is one post up about using the MAP sensor off the same line as the FPR. I haven't tried exactly that, but I have tried 2 different positions on the manifold for the MAP, one at the front of the manifold and one at the back. Doesn't change anything. From what is happening in tunerstudio, it seems to be a fuel cut.
The second issue is just terrible throttle response. This problem is caused by me being garbage at Megasquirts and most things engine tuning. I just wanted to ask some advice on this one.
The third, again, I think me just being a scrub with Megasquirts. So the car idles pretty good in neutral, but once you put it into gear, the idle goes up to about 1600 RPM. It's the weirdest thing, because it wasn't doing this AT ALL at first, and then just started randomly doing it. Pretty clueless on that one.
I have attached a data log of the buck and my current tune. The data log may be a little long, but it should be fairly obvious when I hit it under full throttle and get it to replicate the problem. If I need to I can do another data log.
Again, any advice is greatly appreciated. And I apologize if I did something really dimwitted regarding the fuel/power cut. This is the first time I have put a 1.8 in a 1.6 chassis.