I'm having MAF issues at WOT with the Alpine s/c on my Axiom and have also talked to John at Alpine about it. I think the issue is compounded on the Axiom due to the 'drive by wire'. Another Axiom owner is getting the same OBDII codes I am. He tried the Split Second voltage clamp with no success. I considered the MAF Translator Plus but it could be an expensive mistake. I'm probably going to resort to a UNI-Chip solution which John said would definitely fix my problem and free up several ponies. I'm also watching the 0-60 times post regarding the Motec ECU to see if that's another option.

My s/c setup was great until I ditched the stock airbox/restrictive intake and went with a straight tube with a K&N cone filter. Initially I had the MAF screen removed but I still get the codes with the screen back on but things are slightly better. I have since learned to keep my foot out of it because when I hit the limit, the Axiom goes into Reduced Power Mode (limp) mode.

What codes are you getting? I get the following:

P1514 - TAC System MAF performance calc airflow vs. RPM vs. TPS

P1125 - Accelerator Pedal Position System

P1295 - ??? still researching this one.