Data logging & chart review - Cobb stage 2
07-01-2017, 05:17 PM
#1
Rennlist Member
Thread Starter
Data logging & chart review - Cobb stage 2
Hi guys,
I purchased the Cobb Accessport V3 for my 997.1 Turbo. I plan to have a professional tune done, but of course I wanted to load up an OTS map and do some datalogging right away - new toy needs to be played with...
Using the OTS maps I wanted to be conservative, so I loaded up the stage 2 91ACN map even though I am running 94 with 10% ethanol. Actually, there was about 1/8th of a tank of 91 0% ethanol remaining in my tank when I filled up with 94 this morning. I have a speedtech 3" catted x-pipe, everything else is stock.
http://datazap.me/u/cstyles/log-1498...?log=0&data=18
Check out the datalog on this quick 3rd gear pull. I am most interested in timing and knock, and I am hoping I can get some feedback from the experts here. You can see there is 0 knock up until 6k RPM, and then the knock sensors on each cylinder start registering some values up to 6500rpm where I let off the gas. From my research, -3 to -5 on the knock sensors seems to be about normal, and well within the -15 degrees the DME can pull in event of knock occurrence. The car is pulling very strong, very fast, and I don't feel or notice any hesitations or dead spots once rpms are climbing and boost hits.
I want to play around with the regular 91 and then the 93 maps, but want to ensure the most conservative 91ACN map datalog looks ok first.
Appreciate any feedback. Thanks
I purchased the Cobb Accessport V3 for my 997.1 Turbo. I plan to have a professional tune done, but of course I wanted to load up an OTS map and do some datalogging right away - new toy needs to be played with...
Using the OTS maps I wanted to be conservative, so I loaded up the stage 2 91ACN map even though I am running 94 with 10% ethanol. Actually, there was about 1/8th of a tank of 91 0% ethanol remaining in my tank when I filled up with 94 this morning. I have a speedtech 3" catted x-pipe, everything else is stock.
http://datazap.me/u/cstyles/log-1498...?log=0&data=18
Check out the datalog on this quick 3rd gear pull. I am most interested in timing and knock, and I am hoping I can get some feedback from the experts here. You can see there is 0 knock up until 6k RPM, and then the knock sensors on each cylinder start registering some values up to 6500rpm where I let off the gas. From my research, -3 to -5 on the knock sensors seems to be about normal, and well within the -15 degrees the DME can pull in event of knock occurrence. The car is pulling very strong, very fast, and I don't feel or notice any hesitations or dead spots once rpms are climbing and boost hits.
I want to play around with the regular 91 and then the 93 maps, but want to ensure the most conservative 91ACN map datalog looks ok first.
Appreciate any feedback. Thanks
Last edited by cstyles; 07-01-2017 at 09:22 PM.
