I made this post in a SRT4 thread but I thought I'd bring it over here so so the v-8 guys would see it as well, because their in the same boat as the SRT4 neons when it comes to the sct/diablo solution:
Look here's the problem right now with the SCT and Diablo....
There's no scanner....
sure you can load in one of their made up tunes, but you can be almost certain it won't be right for your car if your modded at all.
I just tuned an 05 SRT4 using SCT, the car had a stage 2 computer, 65 # injectors, 50 trim turbo(i think, can't recall now) and the tune They sent me to use was ridiculous. the fuel trims were off by 25%, everywhere. and I don't mean I just had to add or subtract 25% from the whole map, it was +25% in some spots and -25% in others, that followed no pattern whatsoever.
The only way I could tune it was by using a snap-on scanner, watching it real time on the dyno in steady state mode and pretty much hitting as many points as i could in the fuel map and writing down how far the trims were off, and then making my chanes. Plus the fact that all your changes are made in the VE map, there's no MAF to tune, so your tuning an entire VE map, that btw is complete crap from dodge to begin with, it looks like the rocky mountains here in colorado, no lie....
This is a real PIA when you don't have a proper scanner that you can go back through and look at hisograms or at least scan back across with a cursor and pick out the points you want to change.
If I were an SRT4 owner, I'd wait for HPtuners, as their scanner is one of the best for the GM's and they are getting there with the Ford's, I am assuming the dodge's will be in the same boat, so your life with be tenfold easier when trying to tune your car.
I would not reccomend the competitors stuff right now unless you have some way of scanning your car.
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Originally Posted by turbosocks
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