I may be able to shed some light there... I actually tuned the base map for the 1.6 cars on Scott Siegel's SM car here locally, on what has since become my dyno but this was back a year and a half ago when it was at the local Subaru dealership Scott used to tune at, I later bought the dyno from them when Scott left. Long story there .

We tested his car on his stock ECU as he had been running it in SM with a fairly standard SM setup. He was running the standard issue Racing Beat intake, with the AFM, and had his timing advanced to 14* base on the stock ECU. Here are the results of the stock ECU versus the MSPNP MM9093 dialed in with the AFM still in place:


That's about 9 ft/lbs down low, and still 5.5 ft/lbs up top and 6.6whp up top, with gains across the board.

Then even though it wouldn't be legal to completely remove the AFM in SM or IT I don't believe, we tested it anyways and saw further gains:


We didn't spend alot of time on the tune when we removed the AFM so I believe we could have further improved things, gotten rid of that one dip and possibly brought out the top end a bit more, but there you have it, gains pretty much across the board.


Larger images here if you'd like:

http://megasquirtpnp.com/images/mm90...withoutafm.gif

http://megasquirtpnp.com/images/mm90...withoutafm.gif