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10/10ths · 11-26-2020, 01:27 AM

..She’s just a street car. We use her for fun drives and vacations. I’m sorry. I shipped the car to have maintenance done for reliability and the fuel tuning was simply to get the air/fuel ratio right. The performance aspect was simply a bonus and I requested the ability to change the tune to allow different fuel octane optimization because we travel all over the country in the car and I didn’t want a high performance only option and find myself out in Leadville with only 87 octane available and detonating a hole in a piston.

I’m just a working stiff and had already blown my budget on the maintenance items and stretched to find the coin for this tuning. I couldn’t afford to get fancy and have dyno plots printed of HP & Torque curves. As I said, the mission was to get the air/fuel ratio correct with my deleted secondary cats and aftermarket muffler.

I just thought I’d post my surprise and delight at the added power. I was not expecting this big of a butt dyno power boost. The driveability is night and day better and the car is faster and easier to drive faster. They should come like this from the factory. I had no idea the EPA regs forced such a docile factory tune that an aftermarket tune optimized for the proper air/fuel ratio and ignition timing to take full advantage of 93 octane gas could wake up this car to this degree. It’s amazing.

Cheers!

11-26-2020, 01:27 AM	#11
10/10ths "50 Years of 550 Spyder" Join Date: Jun 2015 Location: The Road Posts: 958	No plans to dyno.... ..She’s just a street car. We use her for fun drives and vacations. I’m sorry. I shipped the car to have maintenance done for reliability and the fuel tuning was simply to get the air/fuel ratio right. The performance aspect was simply a bonus and I requested the ability to change the tune to allow different fuel octane optimization because we travel all over the country in the car and I didn’t want a high performance only option and find myself out in Leadville with only 87 octane available and detonating a hole in a piston. I’m just a working stiff and had already blown my budget on the maintenance items and stretched to find the coin for this tuning. I couldn’t afford to get fancy and have dyno plots printed of HP & Torque curves. As I said, the mission was to get the air/fuel ratio correct with my deleted secondary cats and aftermarket muffler. I just thought I’d post my surprise and delight at the added power. I was not expecting this big of a butt dyno power boost. The driveability is night and day better and the car is faster and easier to drive faster. They should come like this from the factory. I had no idea the EPA regs forced such a docile factory tune that an aftermarket tune optimized for the proper air/fuel ratio and ignition timing to take full advantage of 93 octane gas could wake up this car to this degree. It’s amazing. Cheers! __________________ 550 SE #310---"It's more fun to drive a slow car fast, than a fast car slow."