With one of JDMs very first 2001 programs, I got 376 rwhp on my motor that only had 800 miles on it. His newer programs make even more hp but I added some mods at the same time I updated the program.

It was and still is totally steetable; the way it should have come from the factory.

 

I'm questioning the filter kit. A recent dyno posting showed that the truck lost hp with the kit. I'd like to know more before buying one.