LNF New Parameters

[BackyardTurbo_FTW]

Mine seems accurate. Says 23.9 overall and Im getting about that to a tank now.


We need something to remove cat warmup mode. The issue is it tries to run 1700psi at idle on cold starts and the car just does not like that. I got a layer file for just that deleted and everything is gravy. Can we put that on a list somewhere please? Not saying hurry and go do more work, just saying, whenever you do another please consider that

[Terminator2]

Mine seems accurate. Says 23.9 overall and Im getting about that to a tank now.


We need something to remove cat warmup mode. The issue is it tries to run 1700psi at idle on cold starts and the car just does not like that. I got a layer file for just that deleted and everything is gravy. Can we put that on a list somewhere please? Not saying hurry and go do more work, just saying, whenever you do another please consider that

What it really does not like other than constant high fuel pressure is the injectors spraying constantly (watch IPW) even during ignition. That and -16* of advance LOL.

[Terminator2]

I just tried re-enabling the master load damping and maxing out the multiplier tables. Still have the same 1 second delay in throttle. There's got to be more tables that are screwing with the throttle and ign timing for whatever reason only some German guy in the Bosch factory knows! Different loads and/or some kind of TM do some funky stuff to ign timing, I wish we could smooth out some of that, it would sure make for smoother power.

Yep there are 2500 tables or so in this ECM. ~600 for fueling alone. There always seems to be another table underneath that is limiting things.

[Iam Broke]

Mine seems accurate. Says 23.9 overall and Im getting about that to a tank now.


We need something to remove cat warmup mode. The issue is it tries to run 1700psi at idle on cold starts and the car just does not like that. I got a layer file for just that deleted and everything is gravy. Can we put that on a list somewhere please? Not saying hurry and go do more work, just saying, whenever you do another please consider that

The higher the TF layer raised the inj constant, the higher my DIC read. It said 31.x on E85 when I was running VG's E85 inj constant. I'm someplace in between on the layer, keeping the MAF freq tables stock for my custom intake -12% skew. DIC says 25.x when I get 22.

Hoping to get better results on the HPT only tuning but something is getting buggered in the info to the BCM for MPG's.

[RooTBeeR]

mmmm, new lnf beta

[Bill@HPTuners]

Mine seems accurate. Says 23.9 overall and Im getting about that to a tank now.


We need something to remove cat warmup mode. The issue is it tries to run 1700psi at idle on cold starts and the car just does not like that. I got a layer file for just that deleted and everything is gravy. Can we put that on a list somewhere please? Not saying hurry and go do more work, just saying, whenever you do another please consider that

I put it on the to do list this morning but Chris just went through all the defs twice over the last week or so so I'm not sure how willing he'll be to do it again lol.

[ttypecamaro]

The stock saturn sky table is much different from the stock cobalt table

[Iam Broke]

Did a pull on pure E85, fuel pressure setpoint 15 MPa, Pressure dropped to 6 Mpa with an Inj DC of over 50% at .95 lambda. Glad we can log fuel rail pressure now, I'm done.

Too much air for me to get enough E85 in there. 4.8 sec 60 - 100mph.

Going back to E60 tonight playing with the boost tables some.

[Chris@HPTuners]

ok new beta should be up with the load damping table maximum fixed (sorry!) and also master diable for the whole catalyst heating feature.

Chris...

[Iam Broke]

Thanks again Chris! More to learn!

Dumped in some 93 to get close to E60, prob around E65 right now this log. Got the Boost Controller Duty Cycle to get & hold 95% with the Pressure RPM Factor, Ran it out to 3.03 all the way and it held 95%. Also set the Pressure Limit to 265 kPa and it held very close to 24 psi, drooped a bit then recovered but this was the first pull after a write entire, may be some boost learning curve happening.

Fuel Pressure still dropped to a min of around 10MPa, but I can live with that. E48 may be a better choice. Time will tell.

[T-Man]

ok new beta should be up with the load damping table maximum fixed (sorry!) and also master diable for the whole catalyst heating feature.

Chris...

Thank you for all of your hard work Chris!

Thanks again Chris! More to learn!

Dumped in some 93 to get close to E60, prob around E65 right now this log. Got the Boost Controller Duty Cycle to get & hold 95% with the Pressure RPM Factor, Ran it out to 3.03 all the way and it held 95%. Also set the Pressure Limit to 265 kPa and it held very close to 24 psi, drooped a bit then recovered but this was the first pull after a write entire, may be some boost learning curve happening.

Fuel Pressure still dropped to a min of around 10MPa, but I can live with that. E48 may be a better choice. Time will tell.

Nice work on the WGDC Tom! Thanks man.

[gmtech16450yz]

The stock saturn sky table is much different from the stock cobalt table

Hey Tom did you look at this? I just looked at a Cobalt file and it maxes out at 45%!! Check yours. Now that we can change it I just set mine to 100% on the entire table, I wonder if it'll make my car blow up? Devil hates a coward!

BTW guys, experimenting with the "Optimum Spark" tables when they first came out I had an interesting effect. If you go super high on the high load/high rpm cells you can make the throttle have a "latching" or "sticking" effect. Drives like normal until you give it some load, even if you let off the gas it still thinks there's not enough power being delivered and it will keep opening the throttle! Yikes! Gotta be careful with this stuff, it can bite you. I had a feeling it would do that, I guess I just have that "test pilot" mentality and wanted to find out for myself! That's when I make my best discoveries, when I'm doing something you're not supposed to do! Kinda like when the waiter says "very hot plate, don't touch", how many of us touch it to see how hot it really is? Lol.

Thanks again Chris and Bill, I can't wait to start our Sky's in the morning! Mine shakes the living room window during cat warmup.

['09SS]

Thanks again Chris! More to learn!

Dumped in some 93 to get close to E60, prob around E65 right now this log. Got the Boost Controller Duty Cycle to get & hold 95% with the Pressure RPM Factor, Ran it out to 3.03 all the way and it held 95%. Also set the Pressure Limit to 265 kPa and it held very close to 24 psi, drooped a bit then recovered but this was the first pull after a write entire, may be some boost learning curve happening.

Fuel Pressure still dropped to a min of around 10MPa, but I can live with that. E48 may be a better choice. Time will tell.

how come on the log the wastgate percentage looks lower than 95% the entire pull except right before you freezed the frame?

[Iam Broke]

Because it was lower controlling the boost as needed. Once the pressure dropped below desired, it ramped up the rest of the way. Without the latest tables it would taper off no matter what. If I jacked the DAL's and limits higher, it'd top out earlier.

[gmtech16450yz]

Here's what I'm at guys, nice flat 95% as soon as I'm past 4k or so, which is exactly what I've commanded. I've been using a combination of torque/gear and lowering boost duty cycle to control the 30psi boost spike around 3700rpm. Not so much DAL's since they're a universal control. I still like using the torque/gear table to control boost and throttle because you want different boost levels in different gears. Pretty sweet to be able to dial in exactly what boost you want in what gear and at what rpm.

Oh, BTW Chris, that table has been labeled wrong for a long time, there's no 3rd gear and it has a 6th gear, which no LNF mated trans ever had. We've all just gotten used to knowing 4th is 3rd, 5th is 4th, etc. If it's an easy fix it might be nice to have it read correctly. "Max Engine Torque vs. RPM vs. Gear" is the table I'm talking about.

[Iam Broke]

HOORAY!!!



That is all.

[Bill@HPTuners]

HOORAY!!!



That is all.

No more excuses now guys

Go run the number, put up the numbers on the dyno and show us the R&D wasn't done in vein

[BackyardTurbo_FTW]

Again, excellent work!! I think this will shut us up for awhile now LOL

[Jaxon]

I guess im gonna play with my tune myself, as much as I love pushing a button for more boost, hpt ftw! I need to get to my tuner and have him lay his godly hands on it but I kust dont have time. Swapping plugs and cleaning my filter tomorrow. Does anyone have any hints on any fuel/oil addatives that seem to work well in the di engine? I am gonna seafoam it aswell...

Btw, HPT FTW! Lol

[Chris@HPTuners]

Oh, BTW Chris, that table has been labeled wrong for a long time, there's no 3rd gear and it has a 6th gear, which no LNF mated trans ever had. We've all just gotten used to knowing 4th is 3rd, 5th is 4th, etc. If it's an easy fix it might be nice to have it read correctly. "Max Engine Torque vs. RPM vs. Gear" is the table I'm talking about.

actually, it looks like GM define this axis differently between the solstice and cobalt. I'll have to add the actual axis in there instead of hardcoding it. It won't display nice text anymore. it will just show 0,1,2,3,4,5,7 or 0,1,2,4,5,6,7 or something else... You'll need to know that 0 = P/N and 7 = Rev (for auto only).

For manual trans the current gear is detected via RPM/VSS ratio's it can't detect reverse gear.