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S550 GT500 was almost 4200, why not?

GTD with some Ford engineers

Right, but it's obviously not a tire problem at this point. Why aren't they looking anywhere else?

Have you tried another shop?

It seemed like for a while there people were talking about upgrading just one side (Forget which) to the GT350 axle and thinking that was going to hold

They should get their supply chain issues sorted out. They've had that problem for years. There are people over on 6G waiting for 20 weeks...

Also let's not forget whipple is on back order like usual...

Too little traction

2:32 is faster than any production car that C&D has tested

3.875"

21mpg @ 66mph sounds perfectly normal Octane isn't really going to affect mpg

They do have the tuning

Annoying how companies announce stuff months before you can get it...or let you order it before it's even close to shipping

What do you mean by better? More peak HP? Faster in the 1/4 mile? The automatic P1X S550 cars run really well. Should be the same for the S650.

Average speed of 46mph tells you all you need to know

The idea is you can run the pump while you are in the staging lanes or something at the drag strip. If you have a heat exchanger with fans you can cool the fluid without having to move the car.

Okay then. $60 for two jugs of Mobil 1, Pennzoil Platinum (You can do Supertech for $40 if you want) $12 for a Motorcraft filter Less than half the price

The S650 will add in all the power it can until it picks up knock. Not 100% accurate since they used octane booster instead of 93, another channel did a similar test but I can't remember who it was.

When engine shops break new engines in, they definitely take them over 3500rpm