***Topgunz ROTREX C38R Supercharger Kit***

Originally Posted by FrankEtier

Been a long time coming finding time to do some dyno pulls with Eugene. A couple weeks ago we scheduled a remote dyno tuning session at a local shop I have been using for last several years. The owner recently purchased a Dyno Com AWD dyno for the shop. The day I scheduled turned out to be about the worst weather day for dyno tuning, especially inside a metal building. The ambient air temps were over 100 degrees. IAT's were pretty dang high. We did put a swamp cooler type device in front of car and got the IAT's manageable. The owner of the shop had some learning curve issues getting the dyno setup and the graph to be what Eugene was needing. After several pulls it became apparent to Eugene that something was off with the graph. On the attached "IPS Dyno" you can see that it appears the end of the pull occurs around 7400 RPM and the power starts falling off significantly before 7K RPM. Eugene was watching the data live and said this didn't make sense with what the data showed. He recommended I find another dyno since he didn't trust the graph and didn't want to be adjusting blindly. Not sure what the issue was with the IPS dyno but apparently some setup issues exist in the software.

Yesterday I took the Z to another dyno near my house(Kwik Kar) and made some pulls just to see if the data from IPS Dyno could be duplicated and what the graph looked like. This is the same tune from the IPS graph just a little cooler weather, 96 versus 101. As you can see on the Kwik Kar graph attached, the pull extends to approximately 7800 RPM and the power doesn't fall off until 7500ish RPM. This graph makes sense with the logged data and Eugene and I will be scheduling another remote session using this dyno.

Both Dyno's are manufactured by DynoCom. IPS dyno is an above ground all wheel drive dyno with 2 rollers on front and rear wheels, it was operated in 2wd mode. The Kwik Kar dyno is an in ground single roller that the owner reported was calibrated by Dyno Com in the last 2 months. IPS dyno used STD correction and Kwik Kar corrected with SAE.

With all that said, the Log was showing 14 PSI for max boost and the car put down 534 RWHP and 450 Torque on an incomplete tune with E-80. I am looking to land at 600 RWHP and have a reliable street car.

Hoping to get the next dyno session scheduled and completed in the next few weeks.