CUSTOM PERFORMANCE TUNE
Saturday, May 5, 2007
UpRev Engine Management Solutions
Austin TX

Well, I was finally able to schedule a tune with UpRev this past weekend. Drove from SA to Austin to be at their shop by 9am. Within half an hour, my Z was strapped down & we were able to do our 1st pull of the day.

Here?s the summary of the tune & the dyno results ( DYNOJET ):

-- Initial pull was 238.09 whp & 216.32 ft / lbs ( blue in 1st chart ). The engine was heat soaked, after driving 1 1/2 hours & with less than ideal weather conditions ( high 80s with high humidity ). We did two more pulls before letting the engine cool down.

-- After the initial cool down period (still without a tune), the 4th pull was 244.74 whp & 222.39 ft / lbs ( blue in 2nd chart ).

-- Jared tuned the Z the rest of the day, adjusting the AFR first (achieving 12.9-13.0), and then the timing. He basically refined his tune after every three pulls to achieve the optimum results. With the UpRev Cipher software program, Jared was able to make adjustments in ?real time? so we were seeing immediate results of these adjustments after every pull.

-- During these intermediate pulls, we were getting up to 246-249 whp consistently. We just could not get over the 250+ whp mark so we decided to let the engine cool down after he completed the final timing adjustments. The next three pulls will be the last of the day.

-- With the engine cooled down, pull #39 achieved the best results of the day -> 252.01 whp & 224.97 ft / lbs ( red in 2nd chart ).

-- The last pull of the day, #41, resulted in 246.67 whp & 223.62 ft / lbs ( red in 2nd chart ) after the engine has been heat soaked from the previous pulls.

-- I was very pleased with the results. Even with an A/T and the associated drivetrain loss, we felt that these gains were favorable. According to UpRev, I have the 1st Z that they have tuned that achieved over 250+ whp (M/T or A/T), and that?s remarkable since they have tuned dozens of other Zs.

In addition to the tune, UpRev also raised the REV limiter to 7K and removed the speed limiter. Lastly, they provided me the following map switching settings:

Map 1 - UpRev Performance for 93 Octane
Map 2 - Valet (3500 rpm and 40 mph)
Map 3 - Stock with adjusted Target AFR

Overall, I was very impressed with UpRev. They had the entire team on-site [ Chung (lead), Jared (tuner) and John (developer) ] to provide me the services that I need in order to achieve the optimum tune possible for my current setup.

Below are the two dyno sheets provided by UpRev. This is my 1st dyno with my Z since I was not able to do one when it was still stock. I plan on scheduling another dyno in a few months when the weather conditions are more favorable in getting better results, but overall, I am very happy with the current numbers.