Falling Flat on the Big End (log file inside)
Thread Starter
Launching!
Joined: Mar 2012
Posts: 299
Likes: 21
From: Phoenix, AZ
Falling Flat on the Big End (log file inside) The last time I went to the track, the engine started laying over at 90+ mph. It was difficult to tell what was causing it. It wasnt missfiring it was more like a governor kicked in or maybe even valve float. I just looked at the file and noticed there was a steady increase in mph until it hit 99mph and then it stopped accelerating, which makes sense because thats exactly what it felt like. It wasnt missfiring or stumbling or anything like that. It just stopped accelerating. RPMs were not increasing either.
I have HPtuners and I did record and save the data from that night. The problem is I dont know what Im looking at. Could I get some pointers on what to look at in HPtuners?
I would really appreciate it if someone would take a quick look at the file to see if there is anything obvious.
Stock 6.0 LQ9 with headers. No tune. 4.11 gears out back with a stock 4l80e tranny.
I have HPtuners and I did record and save the data from that night. The problem is I dont know what Im looking at. Could I get some pointers on what to look at in HPtuners?
I would really appreciate it if someone would take a quick look at the file to see if there is anything obvious.
Stock 6.0 LQ9 with headers. No tune. 4.11 gears out back with a stock 4l80e tranny.
TECH Enthusiast
Joined: Mar 2005
Posts: 663
Likes: 384
From: South Carolina
What PCM?
Have you disabled the "speed limiter" in the VCM Editor under Speedo > Limiter > Limit by Fuel
On the trucks the speed is limited at 98 MPH. Max out the number to whatever the number is in the info when you hover over that table. If you have a DBW throttle body max out that number too.
Have you disabled the "speed limiter" in the VCM Editor under Speedo > Limiter > Limit by Fuel
On the trucks the speed is limited at 98 MPH. Max out the number to whatever the number is in the info when you hover over that table. If you have a DBW throttle body max out that number too.
Last edited by RedXray; Oct 12, 2020 at 02:26 AM. Reason: spellin
Thread Starter
Launching!
Joined: Mar 2012
Posts: 299
Likes: 21
From: Phoenix, AZ
What PCM?
Have you disabled the "speed limiter" in the VCM Editor under Speedo > Limiter > Limit by Fuel
On the trucks the speed is limited at 98 MPH. Max out the number to whatever the number is in the info when you hover over that table. If you have a DBW throttle body max out that number too.
Have you disabled the "speed limiter" in the VCM Editor under Speedo > Limiter > Limit by Fuel
On the trucks the speed is limited at 98 MPH. Max out the number to whatever the number is in the info when you hover over that table. If you have a DBW throttle body max out that number too.
It's the red/blue 0411 PCM for a 2002 Escalade.
Thanks!
