For those who run the Gearhead SRL+ tune.....a question(s) - Page 2 - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #11 of 13 Old 09-10-2019, 05:35 PM
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Originally Posted by HP MACHINE View Post
SRL+ here and it stays on my truck always. I have more than a " G " note invested in tunes that I haven't sent to the bin yet .It is my daily driver and is the most consistent tune I've tried . The only tune I would try next mite be SPD but I can't get any real feedback on it . Many people swear by it but until I can get more than " it's the greatest " or " awesome " I'm not jumping in .
My truck is an 04' late build with a KC2 ( based on a 04' 13 blade ) , 4" exhaust with a stock cat ( 4" in and out ) with stock injectorsand an AIRAID filter set up .
This thing is a really nice daily . I tow with it up to 5000 lbs ( boats etc. ) . The shifting is the best I've tried , consistent and smooth but firm . The only thing it doesn't like is a huge tire spin from a standing start , it will find neutral going into third . I've only had that happen twice but I also don't drive my truck like that ( I was fooling around ) .
If I were to make any changes to SRL+ , I would like to be able to unlock the TC with the tow haul switch on the fly . Sometimes itwill lug and not come out soon enough on a hill until you drop too much speed or apply a bunch of pedal and make it downshift .
I don't ( can't ) run anymore FICM tuning than ECO ( Matt's suggestion ) , A40 and up are just too hot and smoky .
Hope this helps .
agreed...hate the 45mph lock up! I didnt realize how many 45mph speed limits I had around here until i loaded it...but its really my only complaint.
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post #12 of 13 Old 09-10-2019, 05:49 PM
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Originally Posted by benchmstr View Post
SRL+ is my daily tune, and i have about 30,000 miles on it...but, I almost gave up on it!

When I first loaded it didn't run worth a damn, constant slam shifting, started super hard and wasn't consistent. I loaded the 8K tow tune for a while and decided to give the SRL+ another try....it was night and day difference.

I have discovered that when some people go from stock to the SRL+(and other race tunes) from stock that sometimes it never adapts....mine did this..but from the tow tune to srl+ it was great.

I also have the SRL EXTREME but do not use it..

I drove my SRL+ from Houston TX to Orlando and back in a weekend several times and drive to Colorado and back to Houston frequently...and even did a few trips to Washington dc and back to Houston....all on the SRL+..

I thoroughly trust this tune...however, i am no hot rodder. i drive like a grandpa..

bench
Doing a proper transmission re-learn procedure (found in the 5r110 ATSG manual) really helps with shifting when swapping tunes. For the first few 100 miles after you load a new tune it takes a bit for the tranny to really settle in. The 5r110 has adaptive learning so it is literally ALWAYS learning to adjust to the way you drive, tranny wear, per TCM strategy etc etc.. So for example a Stock truck that has been driven by the same person for "X" amount of time is going to be "used" to shifting a certain way, then when you upload a race style tune with totally different shift points, lock up, line pressure it really throws the transmission through a loop and it takes it a bit to adapt. So the more you can just stick with one tune the better, your transmission will thank you. I thoroughly believe swapping tunes constantly will decrease the life of your transmission, although I am sure some will disagree.

On another note Gearhead has awesome transmission tuning, and I have been very pleased with their customer service & tunes. Miles better than my IDP tunes shifting wise.

2006 CCSB Lariat F-350
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Driven Diesel RR w/ Fuelab Regulator
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post #13 of 13 Old 09-11-2019, 11:55 AM
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Doing a proper transmission re-learn procedure (found in the 5r110 ATSG manual) really helps with shifting when swapping tunes. For the first few 100 miles after you load a new tune it takes a bit for the tranny to really settle in. The 5r110 has adaptive learning so it is literally ALWAYS learning to adjust to the way you drive, tranny wear, per TCM strategy etc etc.. So for example a Stock truck that has been driven by the same person for "X" amount of time is going to be "used" to shifting a certain way, then when you upload a race style tune with totally different shift points, lock up, line pressure it really throws the transmission through a loop and it takes it a bit to adapt. So the more you can just stick with one tune the better, your transmission will thank you. I thoroughly believe swapping tunes constantly will decrease the life of your transmission, although I am sure some will disagree.

On another note Gearhead has awesome transmission tuning, and I have been very pleased with their customer service & tunes. Miles better than my IDP tunes shifting wise.
not in my case, i put over 500 miles on it the first time around..it shifted, down shifted, and locked up just as hard and rough at 500 miles as it was the day i loaded it.

the second time it was beautiful

bench
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