Muscle Mustangs & Fast Fords
Pro-M Plug-and-Play Installation - Project Smog-Legal Killer
Cutting Edge Fox-Body EFI - Pro-M Racing introduces an affordable plug-and-play, stand-alone computer system for the Fox-body, and we test it on the Smog-Legal Killer.
On The Dyno
With the Pro-M base map loaded, we put the Smog-Legal Killer in Drew Wallace's hands on the AED Dynocom dyno and it proceeded to make our jaws drop. We knew the new ECU and Power Pipe combo was going to unlock some ponies, but we had no idea how many.
The first pull of the day unearthed a 610 hp and 595 lb-ft at the wheels on 91-octane pump gas. You read that right—over 600 hp to the tires through cats, the smog pump, and all! Our previous best was 523 hp and 530 lb-ft at a peak of 12 psi of boost. The new combo upped boost to 15 psi at redline for gains of 87 hp and 72 lb-ft. The Power Pipe seriously uncorked the blower and allowed the wicked AFR 195 heads and Comp Cams blower cam to shine.
While the hero dyno pull was great for morale, the car was leaning out up top. As mentioned, we used the new ECU to track the problem to the stock fuel rails and lines. When pulling 10 degrees of timing didn't kill enough power, we decided (sadly) that the best method to keep the stock block alive was to add a larger blower pulley in hopes of dialing it back to 10 or 12 psi at redline.
Who would have thought we'd be trying to remove power from a combo that was already compromised by cats and other smog-related concessions? If only we had an aftermarket block, we could get 650 hp at the wheels through cats and all.
Smog-Legal (Sort Of)
Up until this point, we were legitimately smog-legal. Sure the car had larger injectors, but that didn't stop it from passing the visual or tailpipe emissions. But in search of more power, we've officially entered some gray area.
Sure the Power Pipe doesn't have a CARB EO number, and admittedly the Pro-M computer ditches the EVAP provisions, but we wanted to see if the car would still pass the tailpipe emissions. A trip to a smog station revealed that while we no longer passed the visual portions, the car still passed tailpipe emissions by a decent margin. The new processor actually allowed us to clean things up down low, which helped the numbers. Hey, we can tune for emissions and power now.
As for the visual portions, well, anyone with a little imagination can figure out a simple solution, but you didn't hear that from us.
Wave Of The Future
Sure, the Pro-M ECU isn't cheap, but at a few ticks under two Gs it's a steal considering its capabilities, plug-and-play harness and the overall quality of the system. We can't tell you how awesome it's been to have a sophisticated system that actually uses wideband O2 sensors to help dial in the perfect tune. We never thought we'd see the day that Fox-body tuning would become so easy, but thanks to companies like Pro-M, owning a Fox is that much better. Welcome to a new era of tuning.