mattf

Why does my California emissions truck only make 235 horse and 460 ft/lbs? Is it as simple as the software? I took the cat off and put on a CAI, but with marginable improvement in performance. I just want to know why my truck gets crappy fuel economy and makes so much less power than a truck built in the same plant in the same year intended for any other state in the union, and what I can do to fix it. Any direction or information is appreciated.

KVD

Hey I know this off topic but could you post some pics of your truck.

It's just like mine and you are runnin the same tires and rim size I'm wantin. I'd like to see what they are gonna look like.

mattf

There's a couple, I really don't have many good ones.

tbarbee1

how do you know you have california emissions whats the difference where did you look etc...

mattf

the data plate on the valve cover showed that it is only rated for 235 horsepower, the truck is from california, its a common rail, and has nv4500. also I had the the dealership print a build sheet for me.

Ceno

sounds like my truck stock -the muffler. i put the TST on it and it really woke her up.

mattf

i was really hoping there'd be something cheap i could do, i don't understand what the difference between our trucks and these others, isb 250, isb 300 that where manufactured at the same time is.