Can anyone tell me if it is normal to have to shift 500-750 rpm sooner to get your shift points on time? There is a delay from me triggering the up shift switch and when it will actually shift. Someone told me Blue top solenoids would speed the respond time up. Its a 2005 E55 and the TCU was done by Eurocharge. I am a transmission rebuilder by trade so internally the trans is fresh and "tight". Did not upgrade any solenoids to anything other than stock. This is my first AMG so I do not know the characteristics of the 722.6 and the TCU workings.

 

99% you already got Blue top solenoids, you may have some issue with your exist solenoids caused that delay...!,

did you diagnose your E55..?

ZAYED,,

 

What mode do you have the tranny in? C, S or M? In C or S, the shift is not instant when pressing the paddle, there's a delay. In M, it is pretty much instant...

 

If you data log you will see the throttle closes slightly right before each shift ,on my SL it's roughly 15 % I believe it may be more on the E55 . Something to do with torque management that's why it seems like real soft shifts ,at least that's what I was told and that's what I see on my TPS data log ,it's at 99% open then right before shift it goes to 85 % open then back to 99% it would be awesome to stay full throttle !chirp gears lol,but prob blow trans in short order.

 

The bottom line is yes, it's unfortunately normal on these cars...

 

We have a TCU tune that will make the car feel night and day. PM us if you are interested!

 

The throttle closing has nothing to do with the tcu

 

I have it in M mode. I just expected a faster shift between me hitting the button and it actually shifting. I was never really impressed with the Euro tune either. I expected a firmer shift in normal driving with S mode and much firmer in M mode. Anyone have a comparison to the Euro tune and BIP tcu tune? Thanks

 

Mine is on the way to you tomorrow.....

 

When mine is in sport mode I cant up shift at wot! It will only up shift on its own. I have a mystery tune in the tcu, in manual mode it is fine. The speed in the shift vary's depending on my rpm. At 5000 rpm it shifts faster then shifting at 6000. how aggressive can BIP make the shifts.

 

We can make the shifts pretty aggressive and firm. There is always a trade off though, if you go extreme, you may have premature transmission wear down the road. Our tunes for the drag guys on hear experienced a very noticeable difference. We adjust for stall speed, gear recalibration, if you changed out the ring and pinion etc.

Pm me(BI-Performance) for more info fellas.

 

The response time could be increased with tuning. But bottom line this is a clutch to clutch style transmission. This means the tcu does a predetermined fill time on the clutches before the shift actually begins to do something, you the driver can detect. Typically this is atleast a .250 second time period. What they have done on the newer transmissions is run the solenoids in a prefill status almost all the time. This makes the response time really quick.
But all this said if you are running full throttle and manually shifting you have to target your shifts earlier. A very quick shift takes say .15 seconds to complete. There is always going to be some delay in activating the solenoids and fluid actually moving. The more power and the lower the gear the more rpms will increase before the shift begins to bring rpms down.
I tune this transmission on some really high hp Mopars and we sometimes start shifts 1000 rpm before redline or more.

 

I've heard that you can install the CLK-DTM software onto the TCU, and it will make the trasnmission a beast!

 

I heard that recently too.
A guy in Germany did this and he said it even remembers the Mode after you stop and lock the car. Also "M" Mode is a true M mode then where the car really stays in a gear until you press a pedal - no auto upshifts anymore.
I don't know what else is different, quicker shifts obviously... Any more Info?

 

Ok that is good to know and shifting early on purpose is what I have learned. Its actually not a big deal... just hit it sooner to hit my target rpm.
I also saw the aftermarket valve body's for sale but shift kits are not. So it will be BIP re-tune or valve body replacement.

 

Please let me know how it works in your car!!!!

 

I've been around for a while and even though I stepped away for a couple of years, I don't recall any worthy results from the valve body tinkering that was going on when I left. Stick with BIP's TCU tune.

Now...can anyone actually confirm this talk about the DTM TCU tune???

 

Yeah, I head you also lose the ability to use paddles while in S mode though (not a big deal though!), but paddles still work in M mode.

 

That's the way it is on early E55's anyways...

 

I have the CLK DTM TCU tune in my car. I lost M mode and C mode. It's all S mode BUT the shifters do work in S mode and work just like M mode and does not shift on its own. It will hold each gear until redline or manually shifted. It does shift very fast and firm. In regular S mode the shift points are very quick (low rpm). I've had no issues so far and love it!

 

subscribed

 

Do you have problems with adaptations after cruising in D?

 

None so far

 

Some videos would be nice to actually see and hear the difference

 

If someone could actually read/write this tune and put it in place of my M mode I'd be pretty happy!