grogan545

Darn I missed this post before when you posted 2 in a row. Agreed, sometimes I don't record the times to distance. I'll go back and make a table.
Yes, that time is lost. A related consequence is a greater drop in RPM and additional torque loss--even if the reduction is not from more agressive software action.
Exactly. The whole issue simply may be shifting. Still, it is troublesome that I consistently get somewhat lower HP readings--by 20 HP or so. In this regard, I have been thinking about another, possibly concomitant, possibility. What if 20.01.00 is failing to load the more aggressive fuel map in DS? I mentioned this possibility once long ago, but now I am thinking about it again. Maybe!
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You are correct,If the shift occurs say between 59 & 61 it would affect both segements(50-60,60-70),but I think you had a much larger discrepancy between 50 & 60 indicating maybe the shift was either complete or almost complete by 60.

My experience with some of the muscle cars I owned didn't show a noticeable increase in time even if I shifted 500 RPM lower.The engines in those days had very narrow torque peaks.Of course there were no engine management systems to get in the way.

On your horsepower issue you must remember that the GT2 derives horsepower from a number of inputs.It is strictly a calculation.Your time to speed is the only the only one that is changing in this equation,as your time increases your horsepower readings will decrease.It can't account for faulty shifts but just see's a slower time therfore you must be developing less horsepower.

Don Juan

WAO and this tread keeps going.. well got CIP 20.0xx and all I can say my Idrive boots fast the car feels smoother and actually quicker (butt dyno) ...so unless it only applied to 545s Im very content with the upgrade..something that caused me a bit of concern is that they could not program the CCC-a unit the first time but they got it.. so far so good

znod

Oh boy. I still have my fingers crossed. Yes, the ultimate sacrifice for either you or I. Don Juan says all is well with his update to 20+. He is an acceleration-oriented guy so I trust his SOP dyno somewhat.

Did you see that I suggested sending me another email possiblity via PM? Apparently, I can't attach the files here.

Good deal DJ. I am very happy for you (and green with envy ) that all seems excellent.

Don Juan

Thanks Znod! i just feel the car more agile... but I have been driving it like if I stole it for the program to adapt quickly... that is so that a mercedes pulled up by me last nite (going arounf 40mph) he rev it ..I guned it and got a jump all of the suddem I was left in the dust to my surprise it was an SL65AMG (V12 twin turbo by the specs i found) .. oh well besides that whiping ass I got, the car still feels quicker than before

znod

Great DJ. I hope you will start a "Killed" thread in the "The Competition" section for fun and tell your story; it's a good one. Remember, there is a "Kills" thread there too; you could add your kills too. I'll go give the "Kills" thread a bump if I haven't already done so. Apparently, some of us are willing to share on the questionable activity. The Dolly Llama say: "Always insist being safe or at least minimizing the risks greatly."

znod

Right, but my torque calculations show a fair differential decrease in torque for the 545i even if shifting is only 125 RPM early--i.e., differential drops of about 18 ft. lbs. for the 1-2 shift and about 8 ft. lbs. for the 2-3 shift. I speculated that these differential drops might cost one several tenths in the 1/8. Check out my post #66 again on these issues.

Right, if the GT2's HP readings are calculated as a function of time to speed, then the readings should automatically be lower--even if the engine has not actually been detuned. Is what you say definitely the way the GT2 derives HP? Of course, if the Step isn't the problem, then HP is because of some sort of engine management or detuning--accidental or otherwise.

Going to do the Z06 now.

znod

Hi Stream:

I hope your headache never developed or, if it did, that it went away soon. I would like to return to a status of neither of us being mad at the other, etc. I definitely am not mad at you.

I have apologized for being sarcastic. I did it with full awareness and take full responsibility. I worded my original repy to you too harshly and used too many words. One of my main points, which didn't seem to come through clearly, is that it appears to me that you are singling me out for a few transgressions and not saying the same sorts of things to others. So, I would appreciate it if you would refrain form doing so if that is what is occurring. Either way, as requested, if you have comments on what or where I post, then I would appreciate it if you would PM me rather than making your comments public. I think that using this procedure is best for avoiding misunderstandings and public squabbling regardless of the identity of the perceived offender. Thanks.

Best,

Znod

cobradav

E90 community is starting to question post CIP 20 performance as well see:

http://www.e90post.com/forums/showthread.php?t=12168

Step tranny still seems a likely candidate

znod

Thanks cd. And, exactly. Here is what the first post said:

"I don't know if it's only me but I'd like to find out if others are noticing what I've noticed on my E90 after getting the CIP 20 software upgrade on my car.
I've noticed that now when step on it the car is less aggressive . At When the pedal is to the metal, and shifting between 2nd and 3rd and 3rd and 4th I've noticed that the pull is not the same as before I took the car in for service. Does anyone have any *real and reasonable* explanation for this? Is it just me?"

My appointment is set for Tue. morn. at 8:00. Thanks for your advice again.

EBMCS03

Or start a BEEN KILLED thread LOL SL65 AMG! I WANT THAT CAR!