i played around alot with this mod before i got a chip. i wanted to see the actual difference it made on the fly, so i put several resistors on a rotary switch and put it in the cab so i could feel the difference. the pic is not great, but you get the idea

 

There definitely is a sweet spot with this mod.

I tried a few combinations. Was fun. Still sitting on my tool box.

 

haha Very nice. Ive read alot about that mod, but I skipped straight to the chip!

Lovin the numbers. Ive gotta do a few more things before I do my first dyno run. Im HOPIN to get one run in before I go to RRE next year...so im not a total when I get there..