In preparation for a customer’s upcoming 20T swap we performed a dyno for a baseline for comparison. The dyno was performed on a Dyno-Jet at Dyno-Pro in Arvada CO. Ambient temperature in the shop was 72ºF, ambient pressure was 25inHG(12.4PSI).
The customer’s car is a mostly stock 96 850, but has a 15G with a 7cm turbine housing and a full 3” exhaust without a catalytic converter or muffler. He also has a 3" j-pipe intake and 50/50 water/methanol injection through a single 250cc nozzle.
He has been running an ARD green tune for the past year, so we decided to start the dyno session off with 4 pulls on the Green tune, 2 with water injection and 2 without.
Following the ARD pulls, we swapped in a Beüst ECU and fine tuned a road tune we had worked on 2 weeks prior. 7 additional pulls were performed, the final 3 were with water injection.
All runs were performed back to back with approximately 5 minutes in between runs for a cool down.
You can see the best 3 runs of the day overlaid here. As you can see the ARD tune produced more peak HP, 5WHP more, but Beüst was able to produce 30FT/lbs more peak torque. The real difference comes when looking at the power curves. The Beüst tune produced an additional 85ft/lbs and 57WHP than the ARD tune at 3,500 RPM. With that said, the Beüst tune did have quicker power curve fall off, but I believe this could have been remedied with additional time on the dyno.
Interestingly enough we were not able to gain any additional power from the use of water injection, hence the reason a curve without water injection was chosen.
Following this Dyno the Beüst project car (my car) was put on the dyno just for an idea on power output.
This is at approximately 21psi. I will post full details in my build thread.
You can find all of the 15G dyno sheets in Dyno-Jet's .drf file format here:
https://www.dropbox.com/sh/9osras5ecsoeklu/AADdUvZUYMQsXMMn9M52IQU3a?dl=0
All 11 runs are included in the above .zip.