Review: Motordyne E370

370Z JT

Update: 3/15/12

If you have been following this thread, last week Tony offered me a "more complete tune" by Church Automotive Testing (CAT) in Wilmington, on his dime. Having nothing to lose, I gladly accepted his offer and scheduled a dyno tuning session with Shawn Church for 12pm, Tuesday March 13th.

Tony was certain more power can be realized if both the timing and AFR was tuned as opposed to the tune by Seb@Specialty Z in which only the AFR was modifed.

I arrived at CAT at 12PM, however I was told Shawn has stepped out and would return shortly. At 12:15pm, another tuner said he'll go ahead and get my car strapped in and proceeded with the tuning session until completion at about 2:15pm. I would like to make it clear Shawn did not have any direct involvement in tuning my Z. However, Shawn did come over to the dynapack monitor several times and discussed the data log with the tuner.

Below are two photographs of the results. Green is the Specialty Z tuned map, and Red is the Church tuned map.







Results:

Horsepower dyno plot was identical up until 5K RPM. Moderate gains (estimated 5-7 HP) were seen with a Peak HP gain of 6 HP.

Torque dyno plot showed gains by the Church tuned map at almost every place under the curve. A considerable amount of torque (estimated 8 lb-ft) was gained between 5K and 6K RPM.

I was pleasantly surprised with the gains from CAT. I decided to validate and confirm these gains on another dyno. Directly after the tuning session with CAT, I drove to Specialty Z and had my Z on their dyno shortly after 4PM. Gains shown on one dyno will reflect the same gains on another dyno.

Below is an image of the two maps on the Dynojet. Blue is the best pull for the Specialty Z tuned map, Red is the best pull for the Church tuned map.



Results:
Comparing the two tuned plots, both were strikingly similar. Peak HP and TRQ were identical. The two plots basically over laid one another. However, where are the torque gains between 5-6K RPM? Where are the HP gains after 5K RPM?


Questions/Comments welcomed.

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