Installed the MSPNP today (90-93). I went with the NO AFM firmware and msq. And before anybody asks... yes, the fuse was pulled out (forever), and the igniter was disconnected while updating the firmware and msq. I removed the airbox, and installed a short section of pipe connected to a cone filter, where the IAT is embedded into the cone filter (into the rubber neck area).
I set the timing via the procedure shown on the site. When all was said and done, the timing light showed ~14 degrees, and so did megatune.
I took the car for a drive, and right when I passed 2000 rpms, steady throttle, the fuel cuts out - or something...and then comes back in, then goes out...and etc. I didn't want to try to even get it above 3000 rpms.
Even when the car is idling... if i press the throttle to go >2000 rpms and hold it there...it'll stutter and and etc.
On the megatune screen, the "pulse width" on the injectors are going to zero when the cutout/hesitation occurs. After my frustration, I uninstalled the mspnp, and reinstalled my stock ECU...and now all is well.
Any ideas as to why this is happening?