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Old 11-24-2020, 03:08 PM   #7
10/10ths
"50 Years of 550 Spyder"
 
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Join Date: Jun 2015
Location: The Road
Posts: 918
No....

What would you call “close” to Flat 6?

I shipped my car to them on a flatbed.

I don’t have dyno numbers, sorry.

The tune is actually four different tunes with a hand held controller that plugs into the OBD port. I have:

93 octane performance

91 octane performance

87 octane

Fuel Economy

Those are my four choices.

I use the car as a cross-country vacation car. I drive to Colorado a lot and can only get 91 octane there.

Also, around my home area, 87 octane is all you can get in some places.

I figured this has me covered for how I use the car.

The goal was to get the air/fuel ratios right with my deleted secondary cats.

The “aggressive” tunes maximize power for that given octane fuel. It works.

The midrange bump is impressive.

Cheers.
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550 SE #310---"It's more fun to drive a slow car fast, than a fast car slow."

Last edited by 10/10ths; 11-24-2020 at 03:12 PM.
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