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View Full Version : Big tow with TST Powermax (long post)



a64pilot
07-16-2003, 12:46
Well I finally had occasion to pull the backhoe with the TST. I started out at power level 4 and Tq. enhancement of three. It pulled much harder than stock! The interesting thing is that the EGT's were only slightly higher than stock. I ended up at a power setting of 5 and a Tq enhancement of 5. EGT's would hit about 1250 and then the tranny would downshift and EGT's would drop, so 1250 was the highest I saw.
I weighed about 28,000, the temp was around 93 or so. The Tranny temp ran one notch below 200 whether I towed in forth or fifth. It crept up to between the last notch and 200 in town stop light to stop light, but never even reached 200.
I had some fun with both a Kenworth and a Ford power smoke. The KW said he weighed about 50,000 and was real surprised when I walked away from him at a stop light. The Ferd was pulling an aluminum horse trailer with three horses. We were going up a hill when the speed limit went from 45 to 65, I could tell he was in it from the smoke he was blowing. I moved over in to the left lane and passed him easily with 20,000 lbs of trailer and backhoe. It wasn't a 6.0, it was a newer truck though and I was surprised he had a Banks emblem under the power smoke badge.
I got 9.1 MPG total and am real happy with that. With the TST this thing pulls like a Demon.
Only one thing happened and I can't figure it out. After I passed the Ferd I backed out of it to let it shift into 5th and it lost power for about 5 sec or so. No smoke no rattle, no surging or anything, it just wouldn't pull more than about 1/4 throttle. EGT's were only about 400, it only lasted about 5 sec and has run fine ever sense.

sdaver
07-16-2003, 13:27
what was your egt limit set at sounds like you might have got to it....good post :D dave

matt-max
07-16-2003, 16:59
also sounds like it could still be sensing slip into fifth gear and limping for an instant

had this happen one with my 2001

matt

Jelisfc
07-16-2003, 17:59
A64, are you running the newest standard version?

a64pilot
07-17-2003, 06:10
Dave,
1400, so I know I didn't get there. I'll hit 1400 hot rodding the truck empty, but not towing?
BTW I'll hit 1400 just prior to the speed limiter.
Matt,
That's entirely possible, Hadn't thought of that. Thought enough slip to cause anything would cause limp mode.
Jelifsc,
I don't think so. I got it in March I believe. What is the improvement in the new software? I really like this box as it dosen't smoke. You can't get behind the turbo. I believe it won't add fuel until there is enough air, (boost)to burn it.

TST Tech
07-17-2003, 07:22
I made a change in the program on 3 -28. If you got the box after that, you have the latest version. There has only been two versions of the standard program. No changes have been made since 3-28-03. Have a great day , Greg

a64pilot
07-17-2003, 08:25
Greg,
What's the change? Can you tell by serial # what version I have? Can the box be re-flashed?

TST Tech
07-17-2003, 08:36
The change was a minor one which invovled removing a delay we had on the fueling based on boost. What's your serial # and I can tell you if it need updated. Any of our boxes can be reflashed. Thanks ,Greg

a64pilot
07-23-2003, 08:00
TST Tech,
My serial # is 1030, is it the new software?

TST Tech
07-23-2003, 12:51
A64
Send it back to me and I'll reflash it a no charge. I think you'll like the newer version better. ;) Have a great day , Greg

a64pilot
07-24-2003, 09:07
Greg,
It is on the way (UPS) to grow up as a comp box. Thanks, Now that is what I call service after the sale!