Tampa Tuning cracking the code on the LLT Camaro

[crc91]

Keep working Tampa! Maybe there is a boost leak or something some where? But that wouldn't explain the random levels, would it?

[MagnumForceGB]

What is the ETC position saying on the scanner during a WOT? Also, are the optimal spark tables 5-10 degrees higher than the main spark tables? I didn't pick up any speed really on my car after I went to a smaller pulley, finally got it to trap 113.5 after adjusting the cam timing.

[Tampa Tuning]

Originally Posted by RubyCamaro

Okay, so my question is a simple one. Has enough been unlocked & made tunable that was not accessible before that it would be worth it for a Camaro like mine that is just every conceivable bolt on & has the HP tune, to go back in for a tune update?

Rubes, I don't know. What was your RWHP with your tune just out of curiousity. It is a heavy car with a small engine.

Originally Posted by Ventmaster

Honesty is the best policy! In my opinion your honesty only makes you more trustworthy.

It really is. Most guys would have swept this project under the rug because the "numbers" weren't good enough. Essentially two calibrator got the same numbers on this built with two different programs so I don't think its the tuning, as much as where is the boost going?

Originally Posted by crc91

Keep working Tampa! Maybe there is a boost leak or something some where? But that wouldn't explain the random levels, would it?

I wouldn't mind a leak, but the power should drop off. The power stayed the same at 5 pounds as it did with almost 8 pounds.

Originally Posted by MagnumForceGB

What is the ETC position saying on the scanner during a WOT? Also, are the optimal spark tables 5-10 degrees higher than the main spark tables? I didn't pick up any speed really on my car after I went to a smaller pulley, finally got it to trap 113.5 after adjusting the cam timing.

Optimal spark is at stock setting because we haven't reached its 26-30 degrees threshold to increase it. I do feel your pain

What throws me off by the below scan is the calculated load at WOT starts at 40% and goes as high as 46%. Where's that projected from and I want to increase that power.

We modified the cam angles in the calibration and that didn't help.

[menendez1293]

Props on the Honesty, do you think you will come across any complications on a N/A car like mine? I know that is a very vague question, and I know this car is notorious for poor tuning, so I understand if you can't answer that straight up.

[Rob21sf]

Originally Posted by menendez1293

Props on the Honesty, do you think you will come across any complications on a N/A car like mine? I know that is a very vague question, and I know this car is notorious for poor tuning, so I understand if you can't answer that straight up.

I think if Phil had an NA/LLT to tune with just bolt-ons, some of the unknowns with the tuning might get answered and it would be a win win in the long run. More data more answers. My 2 cents.

[menendez1293]

Originally Posted by Rob21sf

I think if Phil had an NA/LLT to tune with just bolt-ons, some of the unknowns with the tuning might get answered and it would be a win win in the long run. More data more answers. My 2 cents.

I agree, I would like to get a tune done to my car and I am willing to make the drive down there. However, I would really only like to do the drive if Phil is able to make some significant changes. I know nothing can be promised, so its somewhat of a sticky situation.

[crc91]

Is it possible some of the boost is getting lost in a vacuum. Like brakes or something? When under boost does the brake
Pedal feel vague?

[Rob21sf]

Originally Posted by menendez1293

I agree, I would like to get a tune done to my car and I am willing to make the drive down there. However, I would really only like to do the drive if Phil is able to make some significant changes. I know nothing can be promised, so its somewhat of a sticky situation.

I hear where your coming from. I had to make the same choice as well and I figured might as well dive into it! However, I did this knowing it wasn't going to be quick tune and I'm done. I plan to see Phil again once we figure out some of these Gremlins that I'm dealing with my set up.

I'm hoping collective minds come together and come up with a reasonable solutions as to Why this is occurring? One can only hope!

[menendez1293]

Originally Posted by Rob21sf

I hear where your coming from. I had to make the same choice as well and I figured might as well dive into it! However, I did this knowing it wasn't going to be quick tune and I'm done. I plan to see Phil again once we figure out some of these Gremlins that I'm dealing with my set up.

I'm hoping collective minds come together and come up with a reasonable solutions as to Why this is occurring? One can only hope!

Hopefully it will all work out. Phil is basically starting off with one of the hardest systems. But hey I guess if you can crack the hardest the rest should be simpler from there. I am roughly a 4 hour drive from Tampa and since I will be towing down, the gas bill won't exactly be the cheapest

I just got the dreaded CEL with LTs, so I would really like to get rid of it. Only took 20 miles of driving for it to turn on.

[MagnumForceGB]

Originally Posted by Tampa Tuning

Optimal spark is at stock setting because we haven't reached its 26-30 degrees threshold to increase it. I do feel your pain

What throws me off by the below scan is the calculated load at WOT starts at 40% and goes as high as 46%. Where's that projected from and I want to increase that power.

We modified the cam angles in the calibration and that didn't help.

I believe it is off Desired Air Load (DAL) and Max Air Load Torque (MALT) tables. One time at the track my throttle kept closing a little bit when the calculated load was 100%, raised the MALT from 100% to 160% above 3000 RPM and then did a smoothing, fixed the issue. My DAL table at 100% desired torque is 175 @ 6000 RPM with smooth transitions around.

When I get home I can show what mine is doing at the same RPM.

[MagnumForceGB]

This is what my scanner shows in 4th gear at 6100 RPM's. I have 3.91 gears so I'm at a lower MPH. This log was taken from my 12.607 @ 113.53 run at Thunder Valley, very high trap speed.

[Tampa Tuning]

Thanks Magnum. Its spurred more experimental thoughts for me with the load, but im still scratching my head lol.

We had very good throttle response on several street runs, but would either go into reduced power or would surge after 45% throttle.

More thoughts to ponder, but thanks for your help

[RubyCamaro]

Here are a few screen shots from the tune with a before & after from the dyno & another screen shot of other data. The tuner said he could not adjust knock sensitivity as I recall which he felt was a problem but there were other things as well that I don't recall specifics on.

[MagnumForceGB]

Running late to getting back to work, but if you want some good reading:

http://www.hptuners.com/forum/showth...357-LNF-Guides

Especially around the Torque Management section, those LNF guys have a lot of experience with the Bosch ECU.