DiabloSport Predator: Results of Customers' Cars!
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Joined: Jan 1999
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From: Mobile, AL, USA
DiabloSport Predator: Results of Customers' Cars!
Here is Scott Chandler's '99 A4 Vette w/ stock factory tune versus tuning w/ the Predator. Notice the nice gains throughout the rpm band.
The 2nd chart that shows Run #7 vs. #12 is the stock Predator tune (#7) versus the Predator tune w/ +10% timing and -1% on the fuel trims (leaner). His #4 run did not have an a/f reading on it, so I couldn't post it.
The last chart is a comparison of torque. Although his peak tq only improved by approx. 4, he gained 11 at 5200, and carried approx. 10 more for over 1000 rpms in the, and here's the key word here, *UPPER* rpms!
Overall, these are EXCELLENT gains!
P.s. The lil upside down spike in Scott's runs are attributed to this Dynojet. It's the hp/tq cross intersect causing that. It's not an issue w/ his tune, at all.
Also...
For the record, I want to show dynographs of my friends 2001 Camaro SS 6-speed that I personally tested w/ a "beta" version of the Predator several weeks ago. All runs were done w/in 5 min. of one another, and all the conditions were the exact same. So you will know, the temps that day inside the facility were a whopping 99.15 degrees on run 1, and 100.61 on run 10. Pressure was 29.97 and 29.96 respectively, and the CF was 1.02 on both runs. These #'s are NOT skewed in anyway, as they are completely accurate and true. All runs are SAE, which is noted on the side column, and the runs, and they were done in 4th gear (1:1).
Sure, there is some work to be done in the upper rpms from 5k to 6k, but if you notice the Predator runs are also following the factory curves as well. If I want to try and lean the car out some and get it more flatter/higher across the that range it's going to require some minor tweaking w/ a custom program. Who's to say that the car would make more power, though? It's a matter of testing, and I was out of time that day (was already there for nearly 2 hours and my friend had to leave).
The SS was stock save for a lid. It still had the factory air filter (which, btw, the car made less than 1 hp when removing it, further lending credit to the belief that the factory filter is not that restrictive at this hp level).
There should be more graphs to put up in the future from other customers. Hope this helps everyone!
The 2nd chart that shows Run #7 vs. #12 is the stock Predator tune (#7) versus the Predator tune w/ +10% timing and -1% on the fuel trims (leaner). His #4 run did not have an a/f reading on it, so I couldn't post it.
The last chart is a comparison of torque. Although his peak tq only improved by approx. 4, he gained 11 at 5200, and carried approx. 10 more for over 1000 rpms in the, and here's the key word here, *UPPER* rpms!
Overall, these are EXCELLENT gains!
P.s. The lil upside down spike in Scott's runs are attributed to this Dynojet. It's the hp/tq cross intersect causing that. It's not an issue w/ his tune, at all.
Also...
For the record, I want to show dynographs of my friends 2001 Camaro SS 6-speed that I personally tested w/ a "beta" version of the Predator several weeks ago. All runs were done w/in 5 min. of one another, and all the conditions were the exact same. So you will know, the temps that day inside the facility were a whopping 99.15 degrees on run 1, and 100.61 on run 10. Pressure was 29.97 and 29.96 respectively, and the CF was 1.02 on both runs. These #'s are NOT skewed in anyway, as they are completely accurate and true. All runs are SAE, which is noted on the side column, and the runs, and they were done in 4th gear (1:1).
Sure, there is some work to be done in the upper rpms from 5k to 6k, but if you notice the Predator runs are also following the factory curves as well. If I want to try and lean the car out some and get it more flatter/higher across the that range it's going to require some minor tweaking w/ a custom program. Who's to say that the car would make more power, though? It's a matter of testing, and I was out of time that day (was already there for nearly 2 hours and my friend had to leave).
The SS was stock save for a lid. It still had the factory air filter (which, btw, the car made less than 1 hp when removing it, further lending credit to the belief that the factory filter is not that restrictive at this hp level).
There should be more graphs to put up in the future from other customers. Hope this helps everyone!
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