I've been an HPT user for over 10 years now, but had only used my Windows 7 laptop in the past. I recently got a new Windows 10 laptop. When I tried to connect to a vehicle, it said it couldn't see...
Type: Posts; User: BADFNZ
I've been an HPT user for over 10 years now, but had only used my Windows 7 laptop in the past. I recently got a new Windows 10 laptop. When I tried to connect to a vehicle, it said it couldn't see...
How much timing are you generally adding down low to see these gains? I've slowly been adding timing advance down low and started getting some pretty significant KR when I added more than 3-4...
Thanks for the reply.
So what's the trick to limiting the timing decay on shifts? Is it all done through the spark tables now?
I just opened the tables to my 2016 Sierra for the first time and upgraded to HPT ver 3.4, all at the same time. Needless to say, the options and menus differ very much from my 2011 Sierra and 1998...
Thanks to a lot of help on here, I have been slowly working through issues on my tune. I have finally gotten rid of the idle surge, but I still have a few issues I need to get under control.
1. ...
Cool thanks.
When I turn "Spark Idle" on using the VCM Controls (which keeps the spark constant), the idle gets a lot worse. So I feel my PCM is using spark as a crutch to keep the idle. I'm...
Is the value listed in the idle overspeed/underspeed table the max that the PCM can use or the value that it will use?
For example, if I have 5* advance in the underspeed for -300 rpm, will the...
Well my P/N idle is fine, it's the in gear that's having issues.
The reason I don't think it's timing is because it only happens during a certain ECT. If it was timing, wouldn't it be the same...
Thanks for the response.
The timing data is from a tune Russ K posted for me. The P/N timing he posted was around 14*, but when I upped it to 18* using the Spark Idle command, the idle seemed to...
So I've been on a very long journey to fix my idle surge. A lot of suggestions from my previous thread have helped immensely. Now I only have surge from certain ECTs while in gear.
I'm...
Don't you mean set it to -0.300 to reduce it 30%?
If the formula is 1+(1*-0.3), which is 1+(-0.3), which is 0.7, or 70% TM. Am I correct?
Most recent tune.
I opened up the TB screw half a turn, but the IACs were too low, so I backed it off 1/4 turn and it seemed to work well. The Desired Airflow numbers were pretty solid from the tune. Everything was...
Did you ever figure this out? Mine is doing the same thing.
This is on a 2011 Sierra 5.3.
I reduced the "Shift Tq Factor" from 1.0 to 0.5, and I got extremely hard shifts at WOT. So I upped the value to 0.8, but still got the same thing. So I put the...
One thing I noticed was the only 2 histograms that were working were the Desired Airflow. All the others weren't showing any data. I'm assuming this is the 24 vs 32 bit you were talking about, but...
In gear log below.
Well, my deployment/TDY got cancelled 12 hours before I was supposed to board the plane (gotta love the military), so I was finally able to load your tune Russ. The attached file is the cold start...
Thanks. By rock solid, I meant it took us a while to get the WOT tuning dialed in to where I wanted it. I hate to mess with it without a wideband, but like you said, up to 4000 shouldn't be a...
Thanks a lot for the response.
Unfortunately I'm starting my deployment/TDY tomorrow so I won't be able to tackle this until I get back. I used RussK's idle-airflow config last night and made the...
Thanks for the response.
What do you see in the idle scans and in my tune that aren't jiving? Any specifics? I'm just starting out here, so I hate to start from scratch. I did look at your big...
Any help? I'm deploying for 30 days next week so I'd like to finish this before I leave.
Results are below.
1-Cold start, idle
2-Idle after ~5 minutes of being on
3-Idle after ~7 minutes of being on
4-Idle, then 2000 rpm, then put in gear
Let me know what you guys see.
Thanks a lot for the help so far everyone. I've done all of the engine tweaks and some trans tweaks (shift speeds [mph], max enable TM) but now I'm ready to adjust actual trans shift speeds, shift...
Anyone have an answer to this?