I am thinking about getting one and plan to tow my 12 K 5th wheel. Just curious on opinion about EGT's, economy etc. Do not want to hurt my stock tranny either.
I would like to add gauges and this seems like a good way to go and get a few extra ponys for those hills.

I had one in my 05 cc sb for towing I would recommend it. I thought the truck responded well and never had EGT problems on the hill in stage 1-3 stock trans didn't like 4-6 with 6,000 pound trailer, but would strongly recommend trans cooler upgrade towing with power adders like Banks, Edge, ex...

I prefer my Banks PDA to the Bullit. Just my opinion. You get so much more for your money with the PDA system.