Cool, can you do a write-up on how we can all do this? Just kidding!

Easy, just turn off the engine and coast!

 

I noticed that when I put mine in the towing mode that under high load or WOT it cuts out like a gasser that is starving for fuel. Don't know what was wrong and it didn't even really want to hit the shift point it seemed like. Even the exhaust sounded funny.

 

Just an update,
The HP tune has been running great. I had some HS kids in a GT try and mess with me the other night, and I have to say it was just hilarious how bad they got smoked (literally, he was dumb enough to be on my passenger side with his window down). I left him like he was just sitting there. You should have seen the utter shocked look on his face. However, my EGT spiked a lot quicker that it ever has before (1450), and I don’t know why, as I have never seen it go above 1350, unless it had to do with how I loaded the turbo. I ran the truck easy the rest of the night and today, and it seemed to be normal (no coolant pucking or anything) other than when I started it this morning it pushed some blue smoke (it was about 35* this morning), and cleared up with a couple of seconds. Will an oil sample tell you if you hurt something? Thanks for everyone’s advice.
DeesO

 

The saga continues
First of all, I have not yet contacted SC, so I don’t know how they stand on this.
I will repost all of my info for the benefit of those who have not followed. I have a 03 build 04 auto with 3.73 gears, with X-monitor gauges (in manifold probe), and a 4” turbo back exhaust with stock cat, and 13,500 miles on it. The truck has the latest flash from FoMoCo. I am running at about 7k above sea level. I had to send the tuner back for the new file updates to work with the flash about two weeks ago. When I got it back I put in the HP tune, and the truck would hang at the rev limiter (just under 4k) for a few seconds before shifting. I put it back to stock, which worked fine. I then put the HP tune back in, and while it was much better, it still hung a little bit. I did not have time to mess with it, so I just put the econo mode in until I had time to work with it. At the top of 4th, the turbo would flutter a little bit, but other than that it was fine in econo. When I had some free time, I put the HP tune back on, and this time it ran great. Great power, shifts, and reasonable EGTs. The max boost it would produce about 27 psia, and it would get up to 1380 EGT on a long hard run empty. I drove it this way for about a week. The other night while running against a GT, the truck hit about 1450, in less than a quarter mile. Because the truck had not gotten anywhere near dangerously hot on longer runs than this, I was not glued to the EGT gauge. Thankfully, I looked down before the end of the quarter mile or it would have properly broken 1500. I back down immediately, and made sure I did not get it hot again, and the truck never pushed any coolant out or missed a beat. When I started the truck the next morning (about 40 degrees out), it pushed quite a bit of blue smoke for a few seconds. It ran fine the rest of the day, and did not smoke on other restarts, although it was not off for more than an hour. It had never done this before, and yes, I did glace out my mirror when starting before. Today, I started the truck after sitting for about 26 hours (40* outside) and it push a decent amount of blue smoke again for about 5 seconds, and then cleared up. Drove it around until it hit norm op temp, then got on it with the HP mode still in. The truck started to hang at the top of the gears again. This leads me to believe that something is wrong with my tuner. I put it back to stock, and it ran fine. Now I have a truck that pushes oil at start-ups. I knew that when I put the tuner on, it would take life out of my truck, and I could accept that. I was expecting to have some wear out issues at 150,000-200,000 miles and not getting the 250,000-300,000 that some do, but not 100 miles after putting on the tuner. I know that on gassers, that blue smoke after sitting for a while was due to valve seals worn (and close to a rebuild time), is it the same for Diesels? I’m going to call SC tomorrow and see what they have to say about this.
DeesO

 

I have a question about the shifting firmness of the 1704. My ol' 99 had the 4r100 which I installed the Sonnex valve and Tricummulator springs, I loved the shifting of that setup. If anyone has used the older 4r100 with the items above and now has the 5r100 using the 1704, describe any difference you may experience. I want to be sure that the 1704 is going to give me that firm shift like the parts I installed in the 4r100.

 

In HP mode and WOT open throttle the shift is very (cough ahem) firm. No where near as soft as a 4r100 even if it has the sonnex and tricummulator.

My truck at WOT on good dry pavement will bark the tires into second gear.

 

Well if that 4r100 mod is considered soft, that means (to me) the 1704 will slam the tranny into gear. I like firm but don't need it to feel like I'm popping the clutch when I drive.

 

I just tried the 4x4 launch that everyone has been suggesting @ about 2000 rpm and 20lbs of boost...

The rearview mirror shifted out of position and the dashmat flew onto my lap with the windows up!

I blew the doors in on a turboed ricer w/ gauges and a stripped interior. I was through the intersection before he passed the cross walk. His license plate read "ON GREEN"

Felt good!

 

It is definetly firm but, I would not consider it extremely harsh. Extremely harsh to me is my friends E4OD in his Lightning that will bark the tires at half throttle while towing my Mustang on a trailer!!

Also the nice thing about the 1704 is it shift softens at part throttle, only WOT will it shift hard.

Also mine is an older 1704 I think the newer ones have an even softer part throttle shift.

 

Quite impressive isn't it. I took a friend for a ride in mine because he just bought an '05 and is now buying a 1704.

They described the feeling of there stomach like the feeling you get when you top a steep hill fast and you kinda "lose your stomach".

That launch was 4x4 and about 20psi of boost and the 4.30 gears. It bangs through 1,2,3 just about as fast as you can snap your fingers

 

With normal driving the shift with the 1704 is rather soft. It is only hard when you take off with half throttle or more.

 

My experience is slightly different ... I get firmer shifts than stock even under normal driving (and this is what Vic said to expect), and they firm up even more under heavier throttle. I should mention that I have one of the newer, softer calibrations on my 1704. Guys with older units have a MUCH firmer calibration on theirs, if they haven't been sent in for adjustment. A lot of people prefer it that way. I'm happy with mine just the way it is.

Regards,
Steve

 

I loaded the HP tune instantly and was very pleased. I kept it this way for a couple of cold starts and then went to ECON to help my economy. I felt the drivability was better in HP so I set it back.

I think the tranny didn't have enough time to adapt to the ECON file...

If I am running unloaded is ECON mode really going to increase mileage much over HP mode?

I have heard that black smoke can be the death of diesels, will ECON mode (as opposed to HP mode) increase whatever longevity my 6.0 has left?

 

I think I had the same problem, switching programs before the trans had a chance to adjust. I'm going to attempt Econ again now that its running great in HP. BTW, I noticed after a few days that the black smoke on HP tune went away unless I really put my foot into it.

 

I keep mine set in the HP setting and it seems to get better MPG in that setting vs. the economy setting. Anyone else getting similar results should the economy mode be giving me the better MPG?