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Yes, I still have the tuner. I can dial up 4 levels in HP; lowest above stock is 45 and that is where it stays. I'm not foolish enough to dial up to 150hp and expect the trans to last. The trans tune is supposed to have increased the line pressure but I haven't confirmed it with a scanner.
if the factory tune is ok with you many tuners do have a setting for stock power levels just deletes. that being said the stock transmission doesn't do well with line pressure increases it isn't capable of it what you might do if possible is have a shop swap out the factory line pressure regulator? unsure of the terminology, thus allowing higher pressure? or getting a HD tuned transmission, or having your transmission rebuilt with HD in mind. Or just put transmission tune back to stock in your tuner.
I did a search on that specific code, that code is not "low line pressure code" exactly, that code says the line pressure called for is x, but the achieved line pressure is 15 psi or more under x. That makes me think it is exactly what I already mentioned the factory transmission is unable to increase the line pressure enough to match what the tune called for.
stock transmission can only produce 185 psi, after market calls for 225. so that makes a big difference thus the codeIt is a low line code.... which is exactly what you just said.
My trans is also tuned but essentially my tune just ups the line pressure as if the trans were always in tow/haul mode, increases shift firmness for less clutch slippage (takes out some of the fluid coupling), moves the shift points @ WOT to 3k rpms, and has a 6th gear unlock and downshift to minimize the torque that hits it.
@bp73 set the HP level on the tune back to stock HP level. You don't have to physically put the truck back to stock. Even a 45HP tune could be over 100 lb.ft more torque. These transmissions do not like ANY HP/TQ level higher than stock levels. That could still be part of your issue. I run mine on the stock HP tune, and always have. Knock on wood, but out of 3 "lightweight" trucks with 68RFEs, none of them have ever given me an issue and have had multiple tunes on them.
look I am not trying to get into a ******* match with you, I did not know what that code was specifically so I looked it up, I also know that the stock transmission can never go above 185, I have a raceme ultra tune that has transmission tune as well I do have a HD built transmission that can and does allow 225 psi, my raceme ultra allows me to monitor transmission pressure so I have it as a gauge and I watch it, normal driving it rarely exceeds 185, but it can and does after driving I look at that guage and it tells me the peak pressure for that drive and often it will be over 200.
ah, gottcha, we were both saying similar things at cross talk of each other. which is why I wanted to make sure you understood I wasn't trying to bring this to a issue lolI actually wasn't really disagreeing with you. Just stating the facts and what I know for comparison. BTW... I'm also running a RaceMe UltraCT with the trans tune on a stock 68RFE.
Chill out dude.
