Phoenix Chip in My Van

[Hoat]

I have a 1999 Ford E350 with a 7.3 PS

So I ordered and installed this chip in my van and it really woke it up. I have had it in there about a month and have not really stomped on the right pedal as I do not want to break anything. I gave her about 1/2-3/4 pedal and blew some overboost codes and got a P0601

P0601 - Internal Control Module Memory Checksum Error


I cleared all of the codes and this one come back only when the chip is installed in the van. When I take it out there is no code.

I have also noticed that the throttle response has changed since the original install of the chip. The van also seems to downshift at slow speeds.

I have
25 hp tow
45 tow
65 tow
65 dd
80 per
100 race

Any ideas of what may be going on?

Thanks for any input and I really like the 6 position Chip