Hp tuning

All he has to do is start with a good stock CAT file, adjust the FLS/FTS codes and injector trims then he'll be a tuner. Maybe he'll be smart about it do a pull on a dyno for every change he makes or maybe not. Most likely he just flashes files without even researching the engine serial on SIS to see what the truck's hard parts are. I feel bad for his victims.

 

SIS doesn't tell you much anymore on what the engines hard parts are. It'll tell you what it left the factory as sure, after a couple million miles it could be anything anymore, could easily not even have Cat parts in it.

 

True but it's better than nothing, a very high percentage of being accurate as most rebuilds are done to factory specs and if the owner doesn't know then he must reap whatever he sows.

 

It's not like anybody is rebuilding a 435 5ek and putting all aluminum pistons back in it are they? Burning through a piston is about the only real concern for harm when turning them up unless you're going crazy right?

 

No doubt. Knowing exactly what's in there would be a major concern for me if I were tuning my own truck that's for sure. My 475 5EK had paperwork from the original owner so SIS data matched up and I knew exactly what I had to start with but some people just roll the dice if they have deep pockets I guess.

 

I would be a little nervous about cranking an aluminum piston 435 or something to 600 yeah. Once you're to steel crown pistons there ain't much to worry about I figure.

 

A decent knowledgeable tuner would explain that clearly to their customer and then watch them cry.

 

I guess i havent beat hard nuff then ........but that being said ive beat pretty hard too LOL havent found the limits yet

 

Not offshore, just different ratings straight from Cat or an old Cat DVD. Modified files are floating around, personally I'd just stick with true Cat file. Re-flashing doesn't always get you the results you want especially if not paying attention on earlier stuff. I helped a guy on here through PM that had his low HP 5EK flashed by a parking lot "Doctor" in truck stop in Illinois. He put a "bigger" HP file in it, only trouble was he lost a lot of power. Truck had 56's, file was for 58's. Way different injector duty cycle PWM. Suggested a file, so he went back and gave him the file # for the highest brakesaver file he could use with current pack, injector, cam, turbo combo he had. He was much happier. Gave him parts list to use @ OH time. That being said, I am not a tuner, never claimed or want to be one. I barely understand hexadecimal code, have no dynamometer, and know enough about diesel combustion to know that I don't know enough to make changes. Small changes can cause large consequences.

 

I have a question maybe you can answer. How do you tell if a file is built for a 40,70, or 120 pin ECM? Is there a numerical order of some sort for them?