I'm running a IX turbo on an evo VIII with AEM and Methanol.

I have tried it with a Forge MBC and with a GM boost solenoid, and it spikes to 30, drops to 23 around 5000-5500 RPM's then climbs back to 27-28 lbs by redline.

I cannot figure out what is causing it to drop. I have boost leak tested the car and it is pretty damn tight.

If it was just tapering I wouldnt worry about it but I can't figure what would cause it to dip then come back up like that except the boost controller (which I already switched).