Just ordered a Predator
Thread Starter
Pro
Joined: Sep 2008
Posts: 510
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From: San Antonio TX
Another update..
I took the car for a drive after work today. I had driven the car for about 1.5 hours, so it was not only warm, but hot...judging by the temperature on the console. The outside temperature was 84-85* and it has been muggy here in SA. I took the on-ramp to get on I-10 on 3rd gear....I gunned it at 3-3.5k RPMs. Wow! I had the traction control off and the rear end squatted and slid left, then right. It was evident the engine was making a ton of torque...I don't recall doing that before. The road was dry and the surface was excellent. This was no fluke...it broke traction at 60MPH or so on a good clean surface. I was data logging this run, but some knucklehead had to get in my way.
The car is driving very strong!
I took the car for a drive after work today. I had driven the car for about 1.5 hours, so it was not only warm, but hot...judging by the temperature on the console. The outside temperature was 84-85* and it has been muggy here in SA. I took the on-ramp to get on I-10 on 3rd gear....I gunned it at 3-3.5k RPMs. Wow! I had the traction control off and the rear end squatted and slid left, then right. It was evident the engine was making a ton of torque...I don't recall doing that before. The road was dry and the surface was excellent. This was no fluke...it broke traction at 60MPH or so on a good clean surface. I was data logging this run, but some knucklehead had to get in my way.
The car is driving very strong!
I did my first logging with the predator tuner (run above). one thing I noticed was almost 6* of timing retard at 4800 RPMs. This is on the Diablo tune (93 octane?)
Is this normal? It was warm 84-85* and muggy and I had driven the car for over an hour.
Rick
Le Mans Master
Joined: May 2011
Posts: 5,022
Likes: 18
From: Tampa FL (formerly Justinjor)
Tech Contributor
St. Jude Donor '11-'12-'13-'14
Factory tune starts pulling timing at 86* IAT temps. If it was 84-85* and you don't have a Halltech or similar intake, you likely had IATs well over 100* and equate to 6* of timing pulled.
Here is a screenshot of the factory timing map for IAT. I don't know if the Diablo adjusts these tables or not.
Here is a screenshot of the factory timing map for IAT. I don't know if the Diablo adjusts these tables or not.
Thread Starter
Pro
Joined: Sep 2008
Posts: 510
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From: San Antonio TX
That would explain the knock retard. Throughout the run, the minimum temp was 87.8 and went up to 91.4. At the time of the retard, the temp was at 89.6. The retard was only momenteraly though...it lasted for about 200RPMs and then went to zero. The run had other smaller spikes of less than a degree.
Thanks for the info, Justin.
Rick
Thanks for the info, Justin.
Rick
2nd Gear
Joined: Mar 2012
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did you sell it?
Dang I am selling mine with the connector cable for $225 shipped over in the FS section, last piece left after the K&N intake and UD pulley sold. I thought it would be the first to go.
What Mike said above is spot on. After removing the Diablosport tune and going back to the stock tune I remembered how many more dead spots there are from 1000rpm to 2500rpm. Also I noticed that extra kick up in the higher rpms was gone.
Plus it is great to have if you get a check engine light. Read it, it tells you what the code means and you can clear it.
What Mike said above is spot on. After removing the Diablosport tune and going back to the stock tune I remembered how many more dead spots there are from 1000rpm to 2500rpm. Also I noticed that extra kick up in the higher rpms was gone.
Plus it is great to have if you get a check engine light. Read it, it tells you what the code means and you can clear it.
