Just got home from the track not happy

[08Powerstroked]

The truck seem to wanna cut out or hold third to long, The best i got out of it was 14.73 at 89.78 mph. The slowest was a 15.3 at 88.03 mph the 60 was 2.20 on that run the truck just fell on its face when it launched. The truck keeps on surging/ holding third gear to long and falls off in fourth. Another thing it is doing is it down go back to first when you come to stop and start again it tries to take off in second or third gear. I tried re flashing the truck and it still dont help it. It comes and goes.

[George C]

If you are interested in using your truck for drag racing, and if consistant times are something you want right now, the Spartan will be a better choice. The SCT units are selling for about $400-$450 used. You probably covered the rest in fuel savings anyway.

[08Powerstroked]

not so much for drag racing, the truck had less problems with the 1.20 tune. I have been having alot of trouble with the 1.22 tune

[George C]

Gahanna seems to have some tuning knowledge, and he explained to me that the SCT doesn't go into great detail when rewriting the program within the ECM. So there seems to be some inconsistancies in how one truck reads the program and runs as compared to another. Runs good in one, and like crap in another.
My 1.22 runs pretty damn solid across the board. I really don't have any real problems aside from the shifting could be firmed up.
My fuel mileage is great and the low end is a beast....

After I tried the underpowered ALTOR tune for all of 1 mile, I reloaded the 1.22 R&D. This time, I returned it back to stock before reloading it.
I don't know if that will make any difference, but it reloaded fine again.

Right now, the Spartan is the best choice.
If SCT doesn't get off their duffs and allow Eric to take it from here, I suspect their sales will come to a grinding hault.
I know given the same choices today, I would buy the Spartan.

[08Powerstroked]

I'm just wondering why my truck is having issues, I know that the 1.20 was half the tune that the 1.22 r and d is but i would rather have the 1.20 and lose the power and mileage, because i didnt have any problems with the truck. I'm thinking of switching here in a few weeks.

[gahanna-6.4]

Originally Posted by George C

Gahanna seems to have some tuning knowledge, and he explained to me that the SCT doesn't go into great detail when rewriting the program within the ECM. So there seems to be some inconsistancies in how one truck reads the program and runs as compared to another. Runs good in one, and like crap in another.

Sort of... the problem is that there are just over 100 different 'scenarios' that the ECM is looking for - its very complex. SCT is only addressing the most common scenarios(which is very few). My tuning experience is with F.A.S.T fuel injected units and we only deal with either bank to bank or sequential scenarios that are generally less than 30 scenarios total and in most cases less than 15 sensors. In our type of drag racing you are put on the trailer with a loss of less than a thousandth of a second sometimes - consistency means everything no matter what you're doing. Likewise if you're pulling sleds you need consistent power.

Spartan has this all figured out - All Spartan tuned 6.4 trucks track times prove this(provided the driver knows what they're doing). I spent a *great* deal of time with him on the phone and found out that he has addressed ALL of the scenarios that your ECM might see. There were more reasons than you know as to why his product launch was late - like he was busy addressing things the other tuner companies don't want to - or don't have the experience to. I'm glad he has taken the time to address all this. My hat is off to him after seeing how many tables they have to work with.

People are seeing extremely consistent trucks whether its drag racing, sled pulling or just beating around town with the Spartan setup. His engine and trans tuning is spot-on and extremely consistent. My SCT is history as soon as I order my Spartan setup which will be very soon.

[jcohvac1]

What kinda milage are people seeing with the sparten turners?

[Oilburnr]

I am seeing no improvement, or very slight. Unloaded or loaded seems not to matter. I just completed a 2000 mile round trip pulling 11500 lbs and managed an average of 8.8 mpg. Stock running the same weights netted 8.4. I tried the 150 tune, on and off cruise, 210 tune, 250 tune. It did not matter the mileage was always in the mid to high eights or a couple of tanks high sevens.

Basically I am fed up with this truck, I love every part of the interior ride and handling, but the mileage just sucks, it always seems that I have to be running 20 + lbs of boost to have any power at all and with that kind of fuel and boost you will never get good mileage.

Using my 03 dodge 5.9 48RE the same weights netted 11-12mpg. God I miss that truck.

[texguy75]

I am getting 24.7 hwy and 18.2 city with about 2,500 miles on the 250 tune.

[texguy75]

Actually, yesterday on a 220 mile trip, i got 27.3 mpg with a tail wind. From all the posts I've read on mpg issues, I firmly believe the job build is the primary reason for the tunes effectiveness. Every truck getting good gas mileage has been a job 2 or 3 build. I think re-flashing is the way to go if you have a job 1 build.