Predator Tune changes stock setting how much
Thread Starter
Instructor
Joined: Nov 2001
Posts: 232
Likes: 0
From: Tracy Ca
Predator Tune changes stock setting how much
can anyone tell me what the predortor tune changes from stock. like A/F, Timing, how much does it change it. I asked them and they wont tell me. 
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
the "performance tune" changes are a secret (but it's mostly timing with a very slight amount of leaning). But you can further alter them after the tune is initially loaded.
Racer
Joined: Feb 2004
Posts: 455
Likes: 11
From: Roanoke VA
I removed a Predator tune last week and ran the car in a solo 2 autox this past weekend.
Two major differences that were readily apparent:
1. The car lost its low end torque, felt like it was starting in second gear until about 3500 rpm and then it ran good. The car is an A4 and I assume that torque managment had a lot to do with the low end performance.
2. Water and transmission temperatures skyrocketed and I could not control them between runs (fans coming on over 220*).
I now have LS1 Edit, reason for putting the stock tune back into the PCM to download into Edit.
Can I now put the Predator tune back into the car and read it with LS1 Edit? If so I will do it find out what the difference is.
Two major differences that were readily apparent:
1. The car lost its low end torque, felt like it was starting in second gear until about 3500 rpm and then it ran good. The car is an A4 and I assume that torque managment had a lot to do with the low end performance.
2. Water and transmission temperatures skyrocketed and I could not control them between runs (fans coming on over 220*).
I now have LS1 Edit, reason for putting the stock tune back into the PCM to download into Edit.
Can I now put the Predator tune back into the car and read it with LS1 Edit? If so I will do it find out what the difference is.
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
I removed a Predator tune last week and ran the car in a solo 2 autox this past weekend.
Two major differences that were readily apparent:
1. The car lost its low end torque, felt like it was starting in second gear until about 3500 rpm and then it ran good. The car is an A4 and I assume that torque managment had a lot to do with the low end performance.
2. Water and transmission temperatures skyrocketed and I could not control them between runs (fans coming on over 220*).
Two major differences that were readily apparent:
1. The car lost its low end torque, felt like it was starting in second gear until about 3500 rpm and then it ran good. The car is an A4 and I assume that torque managment had a lot to do with the low end performance.
2. Water and transmission temperatures skyrocketed and I could not control them between runs (fans coming on over 220*).
Racer
Joined: Feb 2004
Posts: 455
Likes: 11
From: Roanoke VA
I loaded the Predator tune and read it with LS1 Edit.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
Pro
Joined: May 2001
Posts: 572
Likes: 20
From: Pittsburgh, PA - UCCC 11 Second Club
Predator tune differences
Based upon what you saw is it better to use the Predator or to buy something like HP Tuners/LS1 Edit where I think you can make those changes and more???
It would be interesting to know what the changes really are?
It would be interesting to know what the changes really are?
Originally Posted by billiardcue
I loaded the Predator tune and read it with LS1 Edit.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
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Safety Car
Joined: Feb 1999
Posts: 4,044
Likes: 342
From: Central NJ
Originally Posted by billiardcue
I loaded the Predator tune and read it with LS1 Edit.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
Differences are minimal - most changes in torque management and transmission calibration.
Fuel was changed in the 'power enrichment vs RPM' table.
Ignition was changed in the 'high octane spark advance' table.
Fan on temp settings were changed.
Would you mind either listing the timing table or send me a copy of the LS1EDIT file? I have edit and I'm trying to play with the timing as I write this. Thanks, Tony
tabbruzz_98@yahoo.com
Racer
Joined: Feb 2004
Posts: 455
Likes: 11
From: Roanoke VA
Originally Posted by tabbruzz
Billiardcue,
Would you mind either listing the timing table or send me a copy of the LS1EDIT file? I have edit and I'm trying to play with the timing as I write this. Thanks, Tony
tabbruzz_98@yahoo.com
Would you mind either listing the timing table or send me a copy of the LS1EDIT file? I have edit and I'm trying to play with the timing as I write this. Thanks, Tony
tabbruzz_98@yahoo.com
This is the only change I found in the engine calibration file - ignition tab.
The engine calibration file - fuel change is done in the PE (power enrichment) x RPM table is as follows:
RPM vs multiplier
0/400/800 = 1.1134
1200 = 1.1114
1600/2000 = 1.1105
2400 = 1.1124
2800/3200 = 1.1134
3600/4000/4400 = 1.1143
4800 = 1.1163
5200 thru 7200 = 1.1153
Changes made to the torque control - four tables changed and trans calibration has four tables changed.
Fan on temp settings changed.
There is a lot of difference in the performance in my car with the Predator tune. Don't know how much of the difference is attributal to the torque management and how much to fuel and timing changes.
I do know that without the Predator tune and the Nitto 305s the tires way overpower the car.
Need to do back to back drag strip runs with different tune combinations to determine what is doing what. Stock tune - full Predator tune - Predator TM with stock timing and fuel - stock TM with Predator timing and fuel.
Pro
Joined: May 2001
Posts: 572
Likes: 20
From: Pittsburgh, PA - UCCC 11 Second Club
Predator tables
Originally Posted by G-lock
I have several tables available both stock and Predator. Let me know what you need. Jeff
Thanks,
Burning Brakes
Joined: Mar 2003
Posts: 966
Likes: 43
From: Lansing MI
Originally Posted by USRobo
I am interested in seeing both the stock and performance tables for the Predator.
Thanks,
Thanks,
What format I have the 99 and 99+Predator in an XLS if you want it, PM me your E-mail. Jeff
