So, as I said in a related thread, I filled up my base 2000 Boxster with 100 octane lead-free racing fuel when I went to VIR last weekend, an expensive experience. I have been trying to get a sense of how the car performs with the higher-octaner fuel. It seems like it is more responsive, and pulls harder at high rpm's, but it has been difficult for me to quantify.
I went to Richmond today and as I watched the gas gauge head down to a quarter of a tank of the expensive 100 octane fuel, I impulsively decided to see if there was any difference in the performance of the car. So I gave a quick call to the folks at Perfomance Autosport to see if their dyno was free this morning.
I plunked down my 75.00 and we strapped the Boxster in for a run. Dyno-pull junkies, I guess I qualify, know that they put the car in fourth gear and run it up to redline for a pull. One thing I kept track of today was the spedometer at just over the 7K redline in fourth gear. It was 138 mph, yikes. Anyway, I will try to see if I can post the dyno readout as an attachment, if not I will put it up as a sample dyno on my car webpage below.
The results were interesting, no increase in torque over the pull I did recently with normal shell premium 93 octane fuel. But there was an increase from 204 to 210 hp, a 6 hp increase, almost all at higher RPM's. I dont know how much of this increase in inherent in our cars ECU's, or if it is a result of the programming of the Autothority chip that I have put in the car. If the graph posts, the upper graph is the 100 octane fuel run, the lower graph is the 93 octane fuel run, interesting,
Ed
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