You could be getting some knock retard somewhere in your rpms...the pcm will pull timing and then gradually add it back in. So if you launch hard one run and get KR then your next run could suffer. Unfortunately only the diablosport can remove timing/add fuel so your best bet is to use higher octane fuel or a lower octane tune.

 

Thanks...Running 93 on the 91 Tune, so, I guess I will I have to play with which tune is more consistent.

-slide

 

I installed a superchip and it was awesome...These trucks have so much power waiting to be unleashed!!!

 

Are you saying with the diablo you would possibly have less of these inconsistency's?


How much does a diablo cost? Anyone know where to pick one up at a good price? I might be interested in getting one just to see if it is any better than the Superchips Cortex is. I am less than impressed with my Cortex performance wise..............but it does shut the MDS off.

 

One more question does anyone know if it is possible that superchips could have just came up with a slightly diffrent tune for each PCM code they run against? Maby some model trucks that my have had an guy write code for his truck on a Monday morning all hung over. As compared to a diffrent year/model/or whatever my have gotten a well rested tech having a much better day to spend just that few extra seconds to possible see something better than that said guy in a hurry or not realy caring all that much trying to push things through for the sake of getting it done?



Only reason I ask is because when I got my tuner Superchips had to write something for my truck because it was newer and they had yet to see the "code" or whatever its called in my PCM. Took them like a week and a half before I could update my tuner and even instal anything on the truck.

 

I know where you can get one. PM me if interested.

 

the inconsistencies are thereon my truck too, and were there beforere the SC. I don't think knock retard hasa anything to do with it. are YOU launching consistently?? 10 hp wont make much of a difference on a launch. is the trans cold/warm? how bout the engine?

i would hold off on getting rid of a tuner right now since SC is releasing some new stuff. see how that is before u fork out some $ for the DSP.

 

I am not getting rid of the Cortex, just going to get the Diablo and see if there is a diffrence in the two. The make a decision which one to keep.

 

My '07 4.7's TCM (and prob PCM for that matter) is different to say the least. It took Superchips many months to figure out why it wouldnt work (and when I say wouldnt work, I mean nothing. NO tuning for the trans at all). But some hard work by the SC engineer and it was eventually figured out. I guess ANY model could have a slight difference that could make it perform differently.
A short quote from the SC engineer....................
"The DCX engineers decided to use a different “code” base on this particular platform versus the others. Why?
I do not know. Maybe they were a different crew who wrote this code."

 

Yea if you're running 93 on a 91 tune KR isn't your problem...unless there's something wrong with your engine making it run lean as hell. Maybe your clutch fan is dragging more once in awhile....sticking brake caliper? Just throwing out ideas.