IPF Camaro V6 vs Procharger Mustang V6 (Soon)

[Lil' Nasty]

Originally Posted by MagnumForceGB

Is it after the fuel trims activate that it's fine? Might just be running too lean/rich till it enters closed loop.

I'm not going to make changes yet, going to record it on my phone and use it as a reference. Before the springs it started up fast, now it takes a few seconds. After I get the baseline start with stock timing, I will remove timing to see if it changes.

I believe so because in two of the latest revisions ive loaded up, the first cranks were gradually getting smoother. Then the 2,3,4, cold starts act as if the tune was never loaded and is back to being rough until it warms up.

However, I need to pull the positive cable after loading the tune to reset the trims.

[Marklar]

Originally Posted by MagnumForceGB

I have an LT and the auto transmissions are setup a little differently. I can select a gear and it will shift into that gear as long as it doesn't over rev the engine or lug it. There is a table that you can set the speed to where the max speed it can downshift at, on mine I can not command 1st gear above 25 MPH. Stock trans tune will also let the gear hold even if it is bouncing off the rev limiter, I have mine setup to auto shift at redline since bouncing off the rev limiter is a good way to break the oil pump gears.

Right now I can only shift into 2nd at a stop, right now I'm finding the table that can at least unlock 3rd. If I had the stock stall converter it wouldn't work, but I have a very loose one. If I floor it in 2nd gear it just spins the tires, 3rd gear should limit that and let me see how much the converter slips.

Very Interesting, thanks for the response. So you have a stock transmission with a custom tune, do I read that right? Where does one go to learn more about custom tuning of these transmissions? Is there a way to tune the LFX tranny to work like the LT?

[MagnumForceGB]

Originally Posted by Marklar

Very Interesting, thanks for the response. So you have a stock transmission with a custom tune, do I read that right? Where does one go to learn more about custom tuning of these transmissions? Is there a way to tune the LFX tranny to work like the LT?

You can go to the HP Tuners forums, they have a lot of information. The 6L80 and 6L50 are similar for tuning, so you can use the 6L80 information. For the LS transmission to work like the LT, I would have to see the tune itself to see if there is any areas where it is set. Even the 2012+ auto's have the settings backwards from the factory for performance in sport mode.

[MagnumForceGB]

3rd gear launch I did, 0-60 in 5.6 seconds which is better than the stock V6 does with 1st and 2nd gears. Engine is running rich in that RPM, that is why my power is down.

[Lil' Nasty]

And I think your other problem is that your BOV isnt loud enough

[MagnumForceGB]

Originally Posted by Lil' Nasty

And I think your other problem is that your BOV isnt loud enough

Yeah, need it to sound like a train horn.

[tlavoie87]

Hey John just Curious What Does Launching in 3rd gear Test ? Love to learn tricks

[MagnumForceGB]

Originally Posted by tlavoie87

Hey John just Curious What Does Launching in 3rd gear Test ? Love to learn tricks

It allows me to see how much low end torque I'm making by how much the torque converter stalls. It flashes to about 4600 right now then goes down to 4300, it should be about 5000. Since I can't launch in 1st or 2nd on the street, this is the best way of measuring it, I did it on my 5.0 also when I was tuning it. Right now I'm moving my cams around to see what the stall speeds are, once that is done I'm going to work on the brake stall to see if I can get it to leave the line while the engine is spun up already.

[tlavoie87]

U Really are a Mad scientist.. thats awesome .. definitely gonna need your help when i install my cams if you dont mind..

[MagnumForceGB]

Moved the exhaust cams 5 degrees and I lost 150 RPM stall speed, so I had to move the exhaust cams 20 degrees to get them set right. Now I'm going to move the intake cam in to see if it helps or hurts.

[Kenny Camaro]

Go man,go!!

[MagnumForceGB]

Did a good pull today and found an imbalance in the banks from the aux fuel. It happened after I did some porting on the intake manifold and the pills were reinstalled. It is off by 5% to 10%, so I think it might be a clogged one, will have to check it. Got to get that problem fixed because the richer I run the slower the car is, I have to run right at 0.90 lambda to make good power with the amount of water I spray.

[tlavoie87]

wow you run very lean !!

[MagnumForceGB]

Originally Posted by tlavoie87

wow you run very lean !!

It is actually rich considering how much heat water removes. The LNF stock tune ran 0.88 lambda on pump gas with 20 PSI of boost. With direct injection the engine can run leaner while removing more heat.

With some more cam changes I have the converter flashing to 5000 RPM now, at the same RPM the engine is sucking in more air so I'm making more power now. With the aux fuel system disabled I'm out of fuel at 6800, which it runs at 0.94 lambda which is too lean for me. It is fine for a short burst but not a full quarter mile run, the engine gets real hot by the time 4th gear hits if I run it that lean too long.