4L65E Flare shift

[Chuck Finley]

Hey, everyone, I have a RPM built stage 6 4L65E that is flare/soft shifting through the gears. I put a pressure gauge on it and my readings are
Park hot: 60psi
Reverse not moving: 90psi
Reverse moving: 120psi max
Cruise: 90psi
Part throttle shifting: 120psi
WOT shifting: 220psi
Here's my data log and tune also thanks guys

[TransGo Robert]

Hopefully someone else can read your tune and tell you what is wrong, that's not my strong side. But the transmission is shifting soft (I did not really see any flare in the log) because the line pressure is not commanded high enough for the load. It barely raise line unless you get really heavy footed.

[Chuck Finley]

Thanks for looking at it TransGo Robert does my line pressure seem right? I called RPM but no one in tech answered, so I had to leave a message

[TransGo Robert]

If you mean in your write up for this issue yes but of course it all depends at what was done internally. Stock forward you should have ~60 psi at idle and ~200 psi at tall. In reverse it will be ~120 and ~300 psi. I did see you had a sensor connected to it as well, not sure if that was a pressure transducer or not. It was labeled as MPVI2.1 -> AEM 30-(03x0, 2340,5130) and I did not know what to make of it. But one thing for sure, the amperage command for the pressure control solenoid is not right, it does not raise line pressure enough under normal acceleration.

[Chuck Finley]

This is what was done by RPM
Media Blast Transmission Case
RPM Level VI 3-4 Clutch Pack
RPM Reinforced Sunshell with Collar and Bearing
4L65E Low Roller Clutch
Billet 4th Gear Servo
Transgo HD-2 Shift Kit
Corvette Servo
Wide 2-4 Band
Updated Aluminum Accumulator Piston
Bushing Kit
New Shift Solenoids
New GM Valve Body Spacer Plate
GM Filter
RPM Spec Clutch and Band Clearances
Seal & Gasket Kit
RPM Sleeved Input Drum
Billet Over-Run Piston
GM 5 Pinion Planetary Gearsets – Front and Rear
Extra Wide, Heavy Duty, Double Caged 29 Element Sprag
300m Billet Output Shaft
Dyno-Tested
The AEM is my wide band

[TransGo Robert]

This is what was done by RPM
Media Blast Transmission Case
RPM Level VI 3-4 Clutch Pack
RPM Reinforced Sunshell with Collar and Bearing
4L65E Low Roller Clutch
Billet 4th Gear Servo
Transgo HD-2 Shift Kit
Corvette Servo
Wide 2-4 Band
Updated Aluminum Accumulator Piston
Bushing Kit
New Shift Solenoids
New GM Valve Body Spacer Plate
GM Filter
RPM Spec Clutch and Band Clearances
Seal & Gasket Kit
RPM Sleeved Input Drum
Billet Over-Run Piston
GM 5 Pinion Planetary Gearsets – Front and Rear
Extra Wide, Heavy Duty, Double Caged 29 Element Sprag
300m Billet Output Shaft
Dyno-Tested
The AEM is my wide band

OK so with our HD2 Reprogramming Kit™ in forward gear you should have 78-84 min and max approx 230-240 psi. Reverse will 120-125 min and max 315-330 psi.

[Chuck Finley]

So I'm way out of specs

[TransGo Robert]

So I'm way out of specs

It depends on what the computer is commanding. With 1 amp you will have minimum line, with 0 amp you will have maximum. Just the pressure by itself is not enough to tell what is wrong or not wrong.

[Alvin]

Hey, everyone, I have a RPM built stage 6 4L65E that is flare/soft shifting through the gears. I put a pressure gauge on it and my readings are
Park hot: 60psi
Reverse not moving: 90psi
Reverse moving: 120psi max
Cruise: 90psi
Part throttle shifting: 120psi
WOT shifting: 220psi
Here's my data log and tune also thanks guys

I'd consider removing TM completely. Its a built trans. It should be able to take it.

I'd also consider shortening the shift time targets. 0-0.2sec is a good target.

[Chuck Finley]

Thank you everyone for the comments and ideas the line pressure was turned up, and now on the gauge it reads.
psi in park and drive was 120,
psi in reverse and cruise was 150,
psi at WOT was 220-270 it bounced back and forth pretty fast and was hard to read.
heres the updated tune and data log

[Chuck Finley]

anyone have a chance to look at my tune

[ns158sl]

I am not versed in an E40 at all. I think I would raise the upshift pressure for the lower torque value shifts. Atleast start there and see if it responds. Being it still has adapts, have you reset adapts and drive it halfass aggressively so it can relearn? Dont do the fast learn unless you have done it before with hptuners, otherwise a real scanner can do fast learn a lot easier.

[TransGo Robert]

anyone have a chance to look at my tune

Sorry was out of town, just now looked at it. The pressure seems to be commanded ok now while driving it (much better anyway for sure)> can't really tell looking at the log if the shift firmness has improved since yours does not have an input speed sensor so it would be more of a seat of the pants thing than anything else. If you have 120 psi in park then your command is too high under no/light load (should be about 1 amp in Park), but under load it seems ok. Does it feel ok or does it still feel like the shifts are too soft?