General Supercharger Thread

Looks like the earlier trucks and OS have alot more tables to modify......wish we could copy and paste those tables to our versions on HP. That a big dream though

 

What about flashing a different calibration with techstream that has all the tables? You must be able to overwrite different cal ID's, cause that's what the TRD tune does. You'd have to start over with your tune file but most of the stuff should just copy over

 

Hum. I dont have a torque managment table other then the torque model/torque calculation/optimum torque trans. Is this the table they're tuning?

 

Is that possible to select any calibration to flash? Or does it have to match the ECM ID? The TRD calibrations were specific to certain ECMs, so seems unlikely you could just swap whatever you wanted considering the TRD ones were specific?

 

I thought our ECM and its OS was tied directly to the tune calibration though but I may be wrong

 

Oh shoot same thoughts lol

 

That's my question. I've seen charts that list what calibrations go with what year/powertrain, but I'm not sure how cross-compatible they are.

 

Yup that’s the one. It lets the trans know what to expect from the engine so it can act accordingly. As I understand it. Increasing values makes a big difference on how it shifts

 

I would assume increasing these values would bring on more solenoid line pressure to close up the gears clutches quicker.....but man it would be nice to have the ability to actually 5une the line pressures to close up the clutch packs quick. I dont want no slip lol. I wonder what calculations they're using to modify this table, percentages?

 

Wonder what the big tuning vendors do when tuning trans on the 30CM51 ecm os or other ecm os with the no shift pressures/torque managment tables. Throw us a bone guys lol

 

I'm thinking the at least built valve body to hold line pressure. Stock valve bodies wear quicker and don't seal well according to IPT.

 

Yes sir I did watch all of the IPT videos @Silver17 shared, thanks man they're very informative! Looks like he machines and changes the aluminum to steel sleeves. I would say IPT VB is a minimum on AB60e-f

 

Maybe installing an in-line filter would help keep the valve body wear down and help them last longer

 

It would probably help a hell of alot more then the stupid strainer thing in our trans lol

 

Yeah they're using a multipler. So the standard change for SC application for Level10 is to take that entire table (positive values only) and multiply by 1.4 or 1.5. I ramped up to 1.9 by 20 or so % TPS.
Results in firm shifts. You can tell the difference for sure. Make a change, flash, and see. Not going to hurt anything. Just will give you an idea of what the changes do

 

how dare you flaunt these settings in my face

 

It's mutual. They flaunt at me everytime I open and compare calibrations lol

 

A manual T56 with the XAT adapter would be fun but I’d imagine it’s nearly impossible to keep 4x4 with that option. Same for the 8HP transmissions. Really only leaves the Land Cruiser transmission as the most viable option, or if someone could actually build an AB60 that is proven to hold real power. If the 5.29 gears show a big pickup in performance, it may be worth going back to a larger pulley and try and maintain the current acceleration with less boost instead of pushing the envelope. A lot of power is no fun if you have to be scared to use it.

 

idk... spend the money on a built trans and you can use that warranty as much as you need.
I think most of us wouldn't have an issue with a built AB60 considering the stock one does fairly well. The more I read, the more if seems like torque management is going to be more important, but I know I must sound like a broken record at this mount. The AB60 is plenty strong, but no trans is built to handle full torque/load during a shift change. I think that is where our stock AB60 and stock trans tuning gets it into trouble. Stock AB60 with the right torque management and you can abuse it quite a bit, I think. As I've stated previously here... I think the most abuse my truck as seen in it's 11 years of life is when @snivilous and I went through logging and tuning lol

 

Yea unfortunately all the big suspension tundras who have built transmissions have issues unfortunately hence my hesitation and hoping to find a better solution but seems to be difficult either way lol.

 

Is the big issue in the LT world due to high trans temps? I know other factors exacerbate the issues, but high temps can kill her quick

 

Nope I never see high trans temps few others have additional coolers also. Issues from reliability of the built units themselves.. I don’t think the parts going into these built units hold. Most effective way is probably dial the power back as @Silver17 mentioned.

 

Im standing by and watching, hoping to see some success with a built AB60. There have been a lot of good tuners and speed shops to mess with them, especially the guys who push them to the limits in the Middle East. Prospeed’s tuner Chris is also very knowledgeable and they seem to have abandoned AB60s for higher power builds. Nobody seems to have found a way to make them last under big power. I’d be surprised to hear everyone was simply overlooking one trans table.

At my power level (probably 500-550whp) and how infrequently I abuse it, a built trans would probably last a while with a modded VB. I would definitely not waste time and money with a built engine to push past 650+whp though if planning to stick with an AB60.

 

Yea agreed

 

Just to throw more wood in the fire, local guy I tuned and helped install a blower on is having P2757 codes. Just got off the phone with him, he has a Baja trip at the end of the month. We are going to install an IPT Valve Body and see if that fixes it and makes the trans last longer. Worse case if he gets a replacement trans we'll swap the valve body over later on. I thought doing the valve body would be the best bang for the buck. I am not sold on the fully built trans after knowing a handful of people with them. I am not sold on the valve body after installing and driving two of them, BUT the valve body worse case does nothing, and best case helps the truck. It seems like less of a crap shoot than the "fully built" trans. I think the valve body is the best potential upgrade vs price.

We will also pin the thermostat, and run the torque converter always locked up tune, plus the VB and new fluid. If that doesn't fix it, then hopefully that at least buys time for him to decide on swapping the trans to something else, or another stock unit (with the VB), or a built AB60.

His truck was some Baja HQ prerunner, 37s with 4.88s, 127k. Got the blower like 10k ago. Magnuson 1900 with a 2.3 pulley, sub 10psi. Tune used TRD trans values.

 

Interesting. What issues is he experiencing in addition to the code? Slipping and shutter? Rough shifting in general?
Is he the guy you installed the 76mm, 340lph, and 650cc inj?

 

Updated the post with the truck specs, it's stock injectors and a 2.3 on a 1900. Not making a lot of power.

He just drove to California and back and said on the way back the rpm would flare up like the converter was slipping and then throw the code. Said once he got to Las Vegas it didn't happen again. I though it sounded like the beginning of the end, so he's trying to be proactive to see if it can be saved. He thought from reading about the code and someone somewhere posting worn VB pictures that the upgraded VB could fix it, though he was ready to drop coin on a reman trans. We concluded doing the VB might fix everything, worst case he was going to buy the upgraded VB anyway so he'd just go a couple weeks without a replacement trans, and best case it fixes it and saves him a few grand until it acts up again.

 

I ran that old school shift kit in a stock trans and running 8psi for about 9 years. I changed the fluid regularly. The shift kit removed overlap during a shift=no slip between 2-3-4. I wasn't kind to my truck either.
Those that have built vb's with a harsh shift is probably a good thing. No overlap(slippage) between gear shifts. I removed it and now have a built VB and see an occasional 13.5 psi.
@carn_dogg Had delays but rear Speedmaster LSD and 5.29 gears installed. Rear axels slide in smoothly! Waiting on ECGS front bushing but hope to do fronts in a few weeks. Probably will remove front drive shatft. @snivilous thanks...
Now to fill it up with gear oil and break in.

 

Glad to hear you've got the rear together. estimated total working time? shame you can't rip on the LSD until you break in the new gears.