Should I trust it? Lnc2000
Hey, welcome to the forum.
I hope you find some useful stuff here!
Did you post in the intro section?
Seems like that guy didn't know what he had. No mention of boost tuning etc. He just seemed interested in RTT.
At any rate, I've been tuning for 9 years now, and never heard of this file. Or about anyone reading an EFI Live custom OS.
I converted a buddies car from efi live to HPT, tuned it on E85 (Twin turbo 6.0) but never tried to even read his. From prev experience, I didn't think I could. I'll grab that ECU in a couple weeks and see if I can.
Ron
I hope you find some useful stuff here!
Did you post in the intro section?
Seems like that guy didn't know what he had. No mention of boost tuning etc. He just seemed interested in RTT.
At any rate, I've been tuning for 9 years now, and never heard of this file. Or about anyone reading an EFI Live custom OS.
I converted a buddies car from efi live to HPT, tuned it on E85 (Twin turbo 6.0) but never tried to even read his. From prev experience, I didn't think I could. I'll grab that ECU in a couple weeks and see if I can.
Ron
Not sure im following the thread. I have used hp tuners and I have run the custom 2 bar OS on the stock truck PCM. It’s not hard to do. You license the PCM and write the new OS. I’ve even used it on another 5.3 for my dad by converting it from a 1bar MAF to 1 bar MAP for him. It’s actually what I used to run on a stock 5.3 with a centri supercharger up to 12psi and now I use it on my engine test stand. The 2 and 3 bar OS will have VE tables and timing tables for the corresponding map/timing for 2 and 3 bar. So you just tell it what timing u want in the boost regions and adjust the AFR via the VE table and your good.
Not sure im following the thread. I have used hp tuners and I have run the custom 2 bar OS on the stock truck PCM. It’s not hard to do. You license the PCM and write the new OS. I’ve even used it on another 5.3 for my dad by converting it from a 1bar MAF to 1 bar MAP for him. It’s actually what I used to run on a stock 5.3 with a centri supercharger up to 12psi and now I use it on my engine test stand. The 2 and 3 bar OS will have VE tables and timing tables for the corresponding map/timing for 2 and 3 bar. So you just tell it what timing u want in the boost regions and adjust the AFR via the VE table and your good.
can you post a screenshot of your timing/boost map. Because in my 2 bar os there is definitely no timing control via boost. It’s only referenced to g/s which it only goes up to 1.20 grams per second. Once it gets past 1.20 g/s, which is around 8psi, I can no longer control timing for individual boost pressures of 9,10,11,12psi etc.
Not sure im following the thread. I have used hp tuners and I have run the custom 2 bar OS on the stock truck PCM. It’s not hard to do. You license the PCM and write the new OS. I’ve even used it on another 5.3 for my dad by converting it from a 1bar MAF to 1 bar MAP for him. It’s actually what I used to run on a stock 5.3 with a centri supercharger up to 12psi and now I use it on my engine test stand. The 2 and 3 bar OS will have VE tables and timing tables for the corresponding map/timing for 2 and 3 bar. So you just tell it what timing u want in the boost regions and adjust the AFR via the VE table and your good.
Last edited by Dragframe; Mar 17, 2020 at 01:58 AM.
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yeah a couple efi live COS's have tables that can be manipulated by HPT, as the tables were in the code to begin with.
the '04 USDM GTO with the p59 can do 3 bar with a bonus spark table for boost. I stumbled across it when searching for a lean cruise + flex fuel combo (never got it working right)
thats the 7904 OS I think.
have had much better luck with the 7903, using a hobbswitch to pull timing via grounding the IAT and setting the -38*F column to pull a lot timing for overboost protection.
but some hobbes switches are created better than others and the whole thing relies on a $15 sensor to stay alive.
so for my money (yeah lemme hear the booing) its holley or nothing
the '04 USDM GTO with the p59 can do 3 bar with a bonus spark table for boost. I stumbled across it when searching for a lean cruise + flex fuel combo (never got it working right)
thats the 7904 OS I think.
have had much better luck with the 7903, using a hobbswitch to pull timing via grounding the IAT and setting the -38*F column to pull a lot timing for overboost protection.
but some hobbes switches are created better than others and the whole thing relies on a $15 sensor to stay alive.
so for my money (yeah lemme hear the booing) its holley or nothing
yeah a couple efi live COS's have tables that can be manipulated by HPT, as the tables were in the code to begin with.
the '04 USDM GTO with the p59 can do 3 bar with a bonus spark table for boost. I stumbled across it when searching for a lean cruise + flex fuel combo (never got it working right)
thats the 7904 OS I think.
have had much better luck with the 7903, using a hobbswitch to pull timing via grounding the IAT and setting the -38*F column to pull a lot timing for overboost protection.
but some hobbes switches are created better than others and the whole thing relies on a $15 sensor to stay alive.
so for my money (yeah lemme hear the booing) its holley or nothing
the '04 USDM GTO with the p59 can do 3 bar with a bonus spark table for boost. I stumbled across it when searching for a lean cruise + flex fuel combo (never got it working right)
thats the 7904 OS I think.
have had much better luck with the 7903, using a hobbswitch to pull timing via grounding the IAT and setting the -38*F column to pull a lot timing for overboost protection.
but some hobbes switches are created better than others and the whole thing relies on a $15 sensor to stay alive.
so for my money (yeah lemme hear the booing) its holley or nothing
how do I get this os for 2004 us gto? That’s what I have. I need this bonus spark table.....
So true! By the time you waste hours getting widgets like an LNC2000 to work with stock ECM, you could have wired up Holley which is 10x more user friendly then hptuners and have a properly functioning safe tuneup. Don't need to fumble through 7 tables anymore to adjust one simple thing, or shamwow a custom OS with invalid sensor data, or have obscenely low boost control tuning limits. Most people don't realize how user friendly Holley really is, you can literally go from first engine start to running 8 sec passes in about 15 minutes.
but good point with the boost controller he's into widgets for more then what the actual solution would cost. Either way not my problem, nor do I really care what people waste their time and money on. Just agreeing with truckdoug on the easiest path to success, especially on old ECM turbo cars. I know people want to keep stock ECM's for whatever reason and more power to them. He didn't need to buy any of it to begin with but good point with the boost controller he's into widgets for more then what the actual solution would cost. Either way not my problem, nor do I really care what people waste their time and money on. Just agreeing with truckdoug on the easiest path to success, especially on old ECM turbo cars. I know people want to keep stock ECM's for whatever reason and more power to them.
but good point with the boost controller he's into widgets for more then what the actual solution would cost. Either way not my problem, nor do I really care what people waste their time and money on. Just agreeing with truckdoug on the easiest path to success, especially on old ECM turbo cars. I know people want to keep stock ECM's for whatever reason and more power to them. A few people recommended standalone months ago, he said he wants stock ECM so he gets to deal with the headaches that are keeping it. Really I don't care in the least I just think its funny.