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Old 06-22-2012, 07:53 PM   #15
Lee123

 
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Originally Posted by FastRaceCars View Post
Nonetheless...maybe I have my expectations too high after reading some of the other posts. Any other ideas are still appreciated. I'm also attaching my torque management settings screenshot.
I suspect that might be true. There seems to be a vast difference in the performance reported on forums for this car.

Even with the cam and headers mine will not spin when moving without using the clutch. It put down 426 hp on a Dyno Dynamics dyno that is known to be stingy and feels A LOT faster than when it was new, but those tires stick like glue. I've been told the P-Zero's get even stickier when it is over about 80 degrees. Perhaps that's true, but there a lot of folks here that report that their cars are almost uncontrollable with the nannies off, spinning through 1st and 2nd.

And no, I don't just want to wear out my tires. I'd like to know it has that much power.

Good luck with this and if you find the solution, please post it in this thread. I'll be hoping to hear something.
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Last edited by Lee123; 06-23-2012 at 05:26 PM.
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Old 06-22-2012, 08:17 PM   #16
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Since you are a drag racer, consider a trip to the track to see what kind of power your car is making.
Then you will know for sure.
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Old 06-22-2012, 08:43 PM   #17
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Perhaps that's true, but there a lot of folks here that report that their cars are almost uncontrollable with the nannies off, spinning through 1st and 2nd.
Probably the same ones that say turning the nannies off around town is signing your own death warrant. Guess I should have bought a lottery ticket the days I drove all those muscle cars before they had nannies.
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Old 06-23-2012, 11:26 PM   #18
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I've been playing with my tune and some other settings this weekend. Thanks Aaron for sharing your tune. It gave me a couple new ideas to experiment with. I had to attend a wedding in central PA this weekend, so I've been playing a little on some country roads which I am pretty sure are not "sticky". With Traction Control and Stability Control Off, I still can't really spin a tire going in a straight line from a rolling start unless the road is oily or dirty. The groom of the wedding has an Audi A4 AWD with an aftermarket chip in it, and while following him, it was actually a bit challenging to keep up. Of course, I couldn't always tell when he was gonna to go fast, so my reaction time was putting me at a significant disadvantage.

My tires have about 6700 miles on them from the factory now, and still look like new. The car feels to me like it pulls pretty strong...especially from about 3500 rpm and up, but I still can't help but wonder if I'm down on power and just don't know it. I'd like to have it dyno'd or go to the drag strip, but neither of those are close to where I live, and if I go to the drag strip...I'll be towing my dragster.

I'll keep experimenting with the tune for now, and see if I can make any more headway. If anyone else has a good tune for car with similar mods, I'd love to see it for comparison as I could certainly be doing something wrong. Also, what AFR you guys running during PE? I read a couple different threads and it seems to range from 12.x up to 13:1 for peak power, and factory is like 11.x:1.
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Old 06-23-2012, 11:53 PM   #19
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Makes sence since the LS3 doesnt really come on the powerband until 3500rpm. The engine is a touch lazy below that point and once you get into the meat of the power your already rolling at a good speed.
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Old 06-23-2012, 11:57 PM   #20
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Quote:
Originally Posted by speedster View Post
Since you are a drag racer, consider a trip to the track to see what kind of power your car is making.
Then you will know for sure.


I too originally thought the car was a bit weak in the burnout department. Once i hit the track those complaints left. I may not be able to really light them up like days of old. But, i can sure hook and launch unlike the days of old.

My 1973 Firebird Formula 400 could just roast the tires off all day long with a huge cloud of rolling smoke. My 2011 would lay waste to that old bird in the 1320'
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Old 06-24-2012, 01:44 AM   #21
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I've been playing with my tune and some other settings this weekend.
You have HP....
Do you data log your car?
You can monitor your throttle position, RPMs, Timing, Knock, and TQdelivered (and 800 other things)

My car is stock (L99) conservative engine tune......for 91 octane.
at about 4800RPMs my delivered TQ is 380lbs consistenly with no knock retard.

What is yours?
It should be higher than mine if your tune is working.

That will tell you if you are making progress with your tune or not.

For example, if you let the clutch out and go WOT the data log will tell you what kind of power you are making and if the the computer is pulling timing and why.

The TQMgmt in the computer is just that....it manages the delivered torque from the engine....based on the configs in the computer. It can and will slow the car down.....at 1500 rpms or 6800rpms.

I allow a little TQmgmt function in "auto" mode (=healthy chip into 2nd at 30% throttle), but in Tap-shift mode its all OFF.....and it shifts like an F1 car.

I was initally on the fence with the auto and also thought I needed to gear up.
But now after refining the tune on TQMgmt and the transmission, I really like the auto (would not go back) and have no need for higher gears.

Just a thought.....the ZL1s must be massively detuned to not spin those tires off through 3rd gear. I have to get my hands on an auto one of those.
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Old 06-24-2012, 12:39 PM   #22
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Nothing against your tuning ability but I would leave that to the pros. I had Ted Jannetty do all my tuning remotely and it has been simply amazing. From stock, I added Roto-Fab CAI, LT headers, HF cats and Teds tune that worked over the engine and trans tune and made the car a totally different beast.
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Old 06-24-2012, 12:52 PM   #23
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spun mine for the first time yesterday, with all the dials "off" and at about 2.5K rpm in 1st gear.....
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Old 06-24-2012, 01:03 PM   #24
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I roasted my tires almost clean off with my stock LS3 6M no problem. Turn off TC.
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Old 06-24-2012, 01:15 PM   #25
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Should have gotten the V-10
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Old 06-24-2012, 01:20 PM   #26
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Should have gotten the V-10
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Old 06-24-2012, 02:57 PM   #27
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Should have gotten the V-10
I agree, If the sole purpose was to spin the tires, you should've got the V-10.
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Old 06-24-2012, 04:58 PM   #28
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I have pretty much stock except exhaust and CAI... I have the stock run flat Pirelli's and like many others if you take off traction control only and dump the clutch this car will literally roast the tires like the poster who included a picture of his tires. I'm not sure why you can't...
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