[pgfpro]

I hate to discredit anyone when it comes to making something better. I really hope that this company's claims are real.

IMHO I believe that any engine can improve on performance and FE when you run a turbo charger with a manditory programmable engine management system. I have seen this with the cars I have tuned and others that have been tuned by someone else first hand.

Now in this case as far as their HP claims I have no problem believing in their HP numbers. Major HP gains with turbos are being done all the time. With the turbos their running and the Corvette engine this should be pretty easy. The changes I would make...throw away the FMU and install larger injectors. FMU's are a cheap way to flow more fuel and are very hard on the injectors themselves.

Now as for the mpg claims I can see that its possible but my question is why aren't they getting a better freeway number when they are getting a extremely good city number? This part really confuses me???
The city part of the fuel and ignition maps are by far the hardest to tune for performance and FE. The freeway part is the easiest to tune. So one would think their freeway mileage would be a lot better then what they advertise?