HPTuners for boost
I have been using HP Tuners for over 5 years, started with v2.22ish, and I must say that v3.0+ made the transition of our TBSS to boost (2.5bar OS) a relative breeze. Yes there was a lot of reading and research done in advance and during but overall it was pretty seemless. The same applied when we converted the truck for FlexFuel. If you want the answers handed to you pay someone to do the work - because this option doesn't exist.
Relearning and adapting to change is just part of the process; either that or you get left behind. And I have never had an issue with customer support from the staff at HP Tuners.
Recently:
I'd downloaded/installed ver 3.2 of HPTuners since I'd heard they'd re-enabled RTT(Real Time Tuning). I then took my most recent 3 bar OLSD tune file and performed a WRITE ENTIRE. Afterwards, I fired up the engine and started the VM Scanner.
- Gear = Neutral, RPM = 1000, KPA = 47, PW(Pulse Width) = 2.2, A/F ratio = 11.9
- Gear = Neutral, RPM = 2500, KPA = 30, PW(Pulse Width) = 2.2, A/F ratio = 10.X
- Gear = 1st, RPM = 1000, KPA = 55, PW(Pulse Width) = 2.2, A/F ratio = 13.x
- Gear = 1st, RPM = 2000, KPA = 65, PW(Pulse Width) = 2.2, A/F ratio = 19.x where it would then falter and almost die
- The PW stayed locked at 2.2 no matter what I did, no matter what the TPS or MAP values. It was as if it was only going to administer that much fuel. Now, I could flap the thottle (but only in neutral)to make it rev to 3,000 rpm and above and it would FINALLY alter the 2.2, ,but that was it.
No problem I thought, "I'll just fire up RTT and make some adjustments". Nope, I could change the VE in the applicable area to any value, large or small and it had zero effect on the A/F ration my PLX wide band was displaying.
So, realizing that the RTT was not working for unknown reasons, I went into the editor and started modifying cells there. I'd upload and re-scan. No changes. I tried thirteen different flash files before getting exasperated and setting all the VE cells from 15 to 105 to '20'. THEN it had an affect, by flicking the PW back and forth rapidly from 1.9 to 2.2 and back.
So I reached out to the internet to see if anyone else was having issues similar to mine. I found a few but nothing to fix it. Then I called a tuner buddy of mine and told him of my experience. He said that on the LS1 PCM's (0411) he'd ran into the same thing for the 2 and 3 bar SD OS(Operating systems). He said he had to go back to the 2.24 version to upload (Write Entire) the 2 and 3 bar. He also confirmed that the RTT on 3.2 has not worked for him either. I have since found 3 other tuners telling me the same thing about the 3.2 RTT for LS1. Some of them mentioned, once the 3 bar OS was installed by 2.24, they could still subsequently tune them with 3.0 and 3.2.
So I got 2.24, uninstalled version 3.2 and reinstalled version 2.24. I then took my initial tune (before all the crazy changes I'd put in trying to get it to respond), peformed a 'write entire', then fired up the engine and scanner. Right away RTT was causing the desired effect. So I then went to the histograms and modified the VE with that. Soon, the engine was running like a champ. I took her for a drive to the gas station (still need to get the refreshed front end aligned and get the car inspected). Even out of boost, it really feels powerful. Can wait to turn up the wick next time I'm home!
Recently:
I'd downloaded/installed ver 3.2 of HPTuners since I'd heard they'd re-enabled RTT(Real Time Tuning). I then took my most recent 3 bar OLSD tune file and performed a WRITE ENTIRE. Afterwards, I fired up the engine and started the VM Scanner.
- Gear = Neutral, RPM = 1000, KPA = 47, PW(Pulse Width) = 2.2, A/F ratio = 11.9
- Gear = Neutral, RPM = 2500, KPA = 30, PW(Pulse Width) = 2.2, A/F ratio = 10.X
- Gear = 1st, RPM = 1000, KPA = 55, PW(Pulse Width) = 2.2, A/F ratio = 13.x
- Gear = 1st, RPM = 2000, KPA = 65, PW(Pulse Width) = 2.2, A/F ratio = 19.x where it would then falter and almost die
- The PW stayed locked at 2.2 no matter what I did, no matter what the TPS or MAP values. It was as if it was only going to administer that much fuel. Now, I could flap the thottle (but only in neutral)to make it rev to 3,000 rpm and above and it would FINALLY alter the 2.2, ,but that was it.
No problem I thought, "I'll just fire up RTT and make some adjustments". Nope, I could change the VE in the applicable area to any value, large or small and it had zero effect on the A/F ration my PLX wide band was displaying.
So, realizing that the RTT was not working for unknown reasons, I went into the editor and started modifying cells there. I'd upload and re-scan. No changes. I tried thirteen different flash files before getting exasperated and setting all the VE cells from 15 to 105 to '20'. THEN it had an affect, by flicking the PW back and forth rapidly from 1.9 to 2.2 and back.
So I reached out to the internet to see if anyone else was having issues similar to mine. I found a few but nothing to fix it. Then I called a tuner buddy of mine and told him of my experience. He said that on the LS1 PCM's (0411) he'd ran into the same thing for the 2 and 3 bar SD OS(Operating systems). He said he had to go back to the 2.24 version to upload (Write Entire) the 2 and 3 bar. He also confirmed that the RTT on 3.2 has not worked for him either. I have since found 3 other tuners telling me the same thing about the 3.2 RTT for LS1. Some of them mentioned, once the 3 bar OS was installed by 2.24, they could still subsequently tune them with 3.0 and 3.2.
So I got 2.24, uninstalled version 3.2 and reinstalled version 2.24. I then took my initial tune (before all the crazy changes I'd put in trying to get it to respond), peformed a 'write entire', then fired up the engine and scanner. Right away RTT was causing the desired effect. So I then went to the histograms and modified the VE with that. Soon, the engine was running like a champ. I took her for a drive to the gas station (still need to get the refreshed front end aligned and get the car inspected). Even out of boost, it really feels powerful. Can wait to turn up the wick next time I'm home!
Did you call HP tuenrs for advise here? Wonder if the issue is with the software or your set up...
Recently:
I'd downloaded/installed ver 3.2 of HPTuners since I'd heard they'd re-enabled RTT(Real Time Tuning). I then took my most recent 3 bar OLSD tune file and performed a WRITE ENTIRE. Afterwards, I fired up the engine and started the VM Scanner.
- Gear = Neutral, RPM = 1000, KPA = 47, PW(Pulse Width) = 2.2, A/F ratio = 11.9
- Gear = Neutral, RPM = 2500, KPA = 30, PW(Pulse Width) = 2.2, A/F ratio = 10.X
- Gear = 1st, RPM = 1000, KPA = 55, PW(Pulse Width) = 2.2, A/F ratio = 13.x
- Gear = 1st, RPM = 2000, KPA = 65, PW(Pulse Width) = 2.2, A/F ratio = 19.x where it would then falter and almost die
- The PW stayed locked at 2.2 no matter what I did, no matter what the TPS or MAP values. It was as if it was only going to administer that much fuel. Now, I could flap the thottle (but only in neutral)to make it rev to 3,000 rpm and above and it would FINALLY alter the 2.2, ,but that was it.
No problem I thought, "I'll just fire up RTT and make some adjustments". Nope, I could change the VE in the applicable area to any value, large or small and it had zero effect on the A/F ration my PLX wide band was displaying.
So, realizing that the RTT was not working for unknown reasons, I went into the editor and started modifying cells there. I'd upload and re-scan. No changes. I tried thirteen different flash files before getting exasperated and setting all the VE cells from 15 to 105 to '20'. THEN it had an affect, by flicking the PW back and forth rapidly from 1.9 to 2.2 and back.
So I reached out to the internet to see if anyone else was having issues similar to mine. I found a few but nothing to fix it. Then I called a tuner buddy of mine and told him of my experience. He said that on the LS1 PCM's (0411) he'd ran into the same thing for the 2 and 3 bar SD OS(Operating systems). He said he had to go back to the 2.24 version to upload (Write Entire) the 2 and 3 bar. He also confirmed that the RTT on 3.2 has not worked for him either. I have since found 3 other tuners telling me the same thing about the 3.2 RTT for LS1. Some of them mentioned, once the 3 bar OS was installed by 2.24, they could still subsequently tune them with 3.0 and 3.2.
So I got 2.24, uninstalled version 3.2 and reinstalled version 2.24. I then took my initial tune (before all the crazy changes I'd put in trying to get it to respond), peformed a 'write entire', then fired up the engine and scanner. Right away RTT was causing the desired effect. So I then went to the histograms and modified the VE with that. Soon, the engine was running like a champ. I took her for a drive to the gas station (still need to get the refreshed front end aligned and get the car inspected). Even out of boost, it really feels powerful. Can wait to turn up the wick next time I'm home!
At any rate, after canvassing several other users and tuners, it does appear that for the LS1 crowd, the 3 bar OS loaded by 3.2 is not functioning correctly. One gent with a twin turbo corvette setup said he was close to just selling the car after using 3.2 and encountering what I had.
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Believing it to possibly be a corrupt segment or two, I wanted to be sure to overwrite all segments. Since I'd had so many issues with my tune and thinking it far more likely I'd bungled something that an implementation issue, I bought a mail order tune from a sponsor and loaded it. Same.Damn.Behavior... No difference until I reloaded 2.24 and 'write entire'd it. Didn't end up even using the mail order tune.
I have never used 2.24 before, so it wouldn't hurt to get it if 3.2 has some oddities. I wondered why RTT never worked in the version I had, it seems counter intuitive to release a new version that doesn't offer it. If you've got a dropbox/drive link you could fire over for 2.24 so I can leech it, that'd be awesome man. 










If you put in a 3bar OS using write entire and it's fubar'd, I can send you 2.24 and you can fix it.