1-2 shudder at WOT

[ZSHO]

It's really nice having AJP around to explain all this tuning s*** to us

Thanks!

I wouldnt call the tuning (s***) but AJP perspective and input on tuning is greatly appreciated from my point of view,just a little less bashing on vendors like LME would be nice,and that 3-bar s*** is getting kind of old,LOL.Z

[Brucelinc]

It seems that this is only an issue at WOT high RPM 1-2 shifts and is somewhat sporadic.  Does lowering the pressure to eliminate the 1-2 stutter result in a "lag" during the shift similar to stock tune....or is is still firm and crisp but without the stutter?     

If you were going to the track, would you want the higher pressure and potential stutter or would you want the pressure dialed back?   Like others, I have experienced this after a reflash but it typically calms down some after driving awhile and has never occurred at less than WOT.

[AJP turbo]

It seems that this is only an issue at WOT high RPM 1-2 shifts and is somewhat sporadic.  Does lowering the pressure to eliminate the 1-2 stutter result in a "lag" during the shift similar to stock tune....or is is still firm and crisp but without the stutter?     

If you were going to the track, would you want the higher pressure and potential stutter or would you want the pressure dialed back?   Like others, I have experienced this after a reflash but it typically calms down some after driving awhile and has never occurred at less than WOT.

The shutter sounds bad..I wouldn't want it even at the track...and reducing the pressure to say 200 is still well over stock and won't give a laggy shift at all...at wot is where the highest pressure is

[FoMoCoSHO]

It's really nice having AJP around to explain all this tuning s*** to us

Thanks!

I wouldnt call the tuning (s***) but AJP perspective and input on tuning is greatly appreciated from my point of view,just a little less bashing on vendors like LME would be nice,and that 3-bar s*** is getting kind of old,LOL.Z

Honestly Z, that wasn't a dig on LME, it was a statement about tuning in general. It's like Mandarin to me and its nice to have someone around who can translate it.

[ZSHO]

It's really nice having AJP around to explain all this tuning s*** to us

Thanks!

I wouldnt call the tuning (s***) but AJP perspective and input on tuning is greatly appreciated from my point of view,just a little less bashing on vendors like LME would be nice,and that 3-bar s*** is getting kind of old,LOL.Z

Honestly Z, that wasn't a dig on LME, it was a statement about tuning in general. It's like Mandarin to me and its nice to have someone around who can translate it.

Understood(just to clarify things up due to context)the only statement against you was twards the comment about tuning s***,the rest was directed twards AJP.

[donky4444]

So I was too busy today to get back to stock and see if the issue follows. I'll get to it tomorrow after work and see.

[Wilson]

+1 on it being shift pressure. Back when I was running Unleashed I had the same issue and thought it was wheel hop. After I explained it to Torrie he said it was shift pressure. I believe at the time he had it set to 250. Once he set me to 200, the issue went away and the shift was still crisp.

[donky4444]

Back to stock and no shudder now.  I emailed Anthony to ask about shift pressures.

[donky4444]

LME got back to me with the 4X plus tune that should fix the 1-2 shudder. They said they also added grade assist to it which makes the car perform like the 13+ does when you put it in Sport mode. I just put the car in manual but let it shift itself. I went for a short 4 mile drive to pick up dinner and the shudder is gone and the grade assist seems pretty sweet. More testing and playing with it later this weekend. Thanks again to to LME for a fast turn time on getting ,e squared away.

[BiGMaC]

LME got back to me with the 4X plus tune that should fix the 1-2 shudder. They said they also added grade assist to it which makes the car perform like the 13+ does when you put it in Sport mode. I just put the car in manual but let it shift itself. I went for a short 4 mile drive to pick up dinner and the shudder is gone and the grade assist seems pretty sweet. More testing and playing with it later this weekend. Thanks again to to LME for a fast turn time on getting ,e squared away.

Don... Glad to hear the stutter is gone!
I think you will notice that grade assist also functions in the cars downshifting algorithms even when on level ground in "D"... mine does anyway... I love it.  It improves throttle responsiveness at low speeds.

[AJP turbo]

LME got back to me with the 4X plus tune that should fix the 1-2 shudder. They said they also added grade assist to it which makes the car perform like the 13+ does when you put it in Sport mode. I just put the car in manual but let it shift itself. I went for a short 4 mile drive to pick up dinner and the shudder is gone and the grade assist seems pretty sweet. More testing and playing with it later this weekend. Thanks again to to LME for a fast turn time on getting ,e squared away.

A fast turn around was the least they could do...No need to pat them on the back for something that needed addressed....It's like when someone sends you the wrong part then they say don't worry you don't have to pay the shipping back lol...Damn right you don't.

[SHOdded]

Never hurts to play nice, except when you are left no option, aj.  Don, I hope that gremlin has been banished forever and ever!

[ZSHO]

Quite honestly what matters to me most is getting your issues rectified by a tuning co and instead of having to drag myself to the local dealer with a worrisome look.

[SHOnUup]

Seeing comments that may make someone not want to share their experiences with us, what keeps the forums alive, is just painful. AJ, you need a hug man...lol

Rich

[wasinger3000]

Did some testing tonight. -15% shift pressure on 1-2 made a noticeable difference in the "shudder" but it's still there so I'm going to try -25% next.