Calling all datamaster/tuning trans gurus to help. Can somebody check out my datalog?
02-18-2009, 01:54 PM
#1
Calling all datamaster/tuning trans gurus to help. Can somebody check out my datalog? I've emailed this to my tuner and am about to talk to Frank but I want some other opinions as well. Here are my concerns.
I did a data log of some average and moderately spirited city driving. My concerns are as follows.
WOT scares me. I’m bouncing off the rev limiter from 2nd to 3rd (wot at about 40 always bounces) and perhaps from 1st to 2nd gear.
The car runs at a considerably higher RPM than previously with a 2000 rpm stall. 50mph can be at high rpms.
1st to 2nd shift at 3-4k under light to moderate pedal pressure.
On the highway, the converter does not seem to lock up. Vibrations and over 3000-3500 rpms at about 80mph.
2nd gear seems entirely too long. I’m in second gear all the time.
Should the converter not lock at about 50mph or so?
Gas mileage has plummeted from 14-17 city to about 9-10 on a good day.
The car is now slower than it was. This stall is only 800 rpms higher.
Fourth gear seems so high that I’ve only been in 4th a few times.
Rear end gearing hasn’t changed, it’s still a 2.73 car. I knew to expect a change with a higher stall but it seems like I've sacrificed all driveability and gotten NOTHING in return.
Datalog can be found here.
DOWNLOAD ME AND RUN IN DATAMASTER
Please let me know.
Chris
I did a data log of some average and moderately spirited city driving. My concerns are as follows.
WOT scares me. I’m bouncing off the rev limiter from 2nd to 3rd (wot at about 40 always bounces) and perhaps from 1st to 2nd gear.
The car runs at a considerably higher RPM than previously with a 2000 rpm stall. 50mph can be at high rpms.
1st to 2nd shift at 3-4k under light to moderate pedal pressure.
On the highway, the converter does not seem to lock up. Vibrations and over 3000-3500 rpms at about 80mph.
2nd gear seems entirely too long. I’m in second gear all the time.
Should the converter not lock at about 50mph or so?
Gas mileage has plummeted from 14-17 city to about 9-10 on a good day.
The car is now slower than it was. This stall is only 800 rpms higher.
Fourth gear seems so high that I’ve only been in 4th a few times.
Rear end gearing hasn’t changed, it’s still a 2.73 car. I knew to expect a change with a higher stall but it seems like I've sacrificed all driveability and gotten NOTHING in return.
Datalog can be found here.
DOWNLOAD ME AND RUN IN DATAMASTER
Please let me know.
Chris
02-18-2009, 02:29 PM
#3
Yes I certainly did. Thanks though, I forgot to mention that I had done that. I need more perspective on these questions than what the vendors I purchased service/product from are going to give. Naturally they both stand behind their product and both offer good service but I want some more opinions on what's up with my ****.
