Diablosport Forums

i put the extreme rkl tune on my truck today. i went to my friens shop where we dynoed it. to my surprise i made -10 whp than my previous on the old extreme. starting to make me wonder whats goin on here. i have a fass sittin at the house so thats my next adition. hopefully with the extra fuel i can make this tune work. anybody got any dyno results from this tune?

i would say it is the lack of fuel i just put a lift pump on mine and it made the truck a whole new animal before it would fall flat on its face at 2200rpm now it takes off at 2200

I ran 430hp/864trq. on the Extreme (no stack) running these mods at the time:

03' Dually 4 x 4, 4" exhaust
Stage 1 cold air box
Predator/Puc stack
Goerend Trans.
Westach Combo Gauge.
51" Donaldson

I went 463/1023 on the rkl tunes and my MP-8. I dynoed one day later after installing my AD150 so I would bet that you could be running out of fuel. The thing about the 03 04 trucks is that the turbos are horrible.

im running 33"tires i know that killin me. my friends keep tryin to get me to dyno with stock tires but oh well. those are some nice numbers tho. really makes me wanna get the mp-8. i need to hook up the fass and see wats goin on from there. i kno this tune can produce some power. i just hope i can keep up with the smarty trucks.

My first mod was the turbo - the stock turbo and muffler are both TERRIBLE! Craig