Plotting the RPM log would take any guess work out of it.

Red plot shows no slip, blue shows slip, and skews the dyno software:



Another example, notice the plot is not linear, but has little bumps and such:



If you would like to send me your log, I can visualize it through the same system.

 

It was a bad pull and could be why things are screwy but here it is regardless:

http://www.youfile.net/download.php?...dad7e2e02adb5b

 

I need a proper .csv. The formatting is all wack on that, non comma delimited...

 

Do you have Excel 2007?

If so, highlight column A, go to tab Data, then Text to Columns, keep hitting next, it will arrange it.

If that doesn't work, I'll re-format it then send it over.

 

I fixed it:

http://www.youfile.net/download.php?...4ed71b5d56827b

 

Cool I never knew you could do that. Thanks

So yea, you have some slip:

 

Excel, you my only friend

 

So what can I do to stop the clutches from slipping? As I said, I'm going to do a couple more runs with this tune and see how they look.

Razorlab, what are you using for that RPM data?

 

I think the idea is to increase the SST Torque table by the applicable increase in actual torque (i.e. if torque is increased by 20%, increase the table values by 20%).
As for RPM plots, RPM is Y, looks like either time or speed can be X??

 

Thanks Razorlab/SStEvoJr for the clutch slip info.

Because of your info, Mitch @ AMS sent me a revised tune (rev6) that I'm going to load up tonight. It's the same tune as rev5 except he's modified the SST torque tables to reduce slipping.

 

Let us know how it goes, I'm trying to combat some slippage as well. Mine is at spool up tho (peak torque), looks like yours is later in the pull at 5250-5750 (peak power). Unfortunately I don't access to the SST tables ; maybe it will keep me from getting in too much trouble

 

haha maybe! I'll put up the dyno tonight of it and post the link to the log. Maybe Razorlab can plug it in to his software again.

I know Mitch had upped the torque tables I guess it wasn't enough for that tune.

 

Those tables won't do much. The tables you need are not in COBB software unfortunatly.

 

You mean the AccessPort can't access them?

I'm under the impression AMS has pretty good access to the ECU/SST.

 

Has nothing to do with AMS and there abilities. It's a lack of software development for the Accessport (COBB); they aren't nearly as far as Open Source, but are scrambling to catch up, haha!