I am running 103' with Andrews 37HG cams, ported heads, V&H bigshots, kuryakyn hypercharger and have just installed the TMax. On my first tank of gas I got 33 mpg. The second tank I got 37 driving conservatively. How do I go about modifying the map to increase my mpg through the cruise range?

 

which map ya running, the newer maps, numbers in the 4-500s already have the economy settings installed, If you dont have them numbered maps, download the latest ones off of smartlink, Todd

 

I am running 399. I have the newest maps but this was the one that matched my setup the best.

 

Those are still the old maps with afr set to 13 to 1, You can either tinker with your existing map, I think it is easy to do, but I was always to chicken to do it or switch to one of the newer maps in the 4 and 5 hundreds, and if you are worried about it not tuning correctly you can set you adjustment up to like 35 percent away from the original map, Im sure someone that understands the tmax a lot better than me will tell you how to do all this but when I put my tmax in I set it and left it alone and it has been working great and I am afraid if I start messing with it I will make it worse. Todd

 

Thanks Todd. I'll get on the phone with Tmax tommorrow and ask them which map I should use.