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What did you do to your S550 Mustang today?!

GTP

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Okay, so I did do something today.
Added these aero bits. +5mph to my top speed?

1000011557.webp
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larr12

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New rotors and Power Stop Z26 brake pads. Forgot to take a pic of the brakes but here's one of the @Optimum Performance brake hardware with the oem one.

20260810_184910.webp
 

NTXChris

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Please share the benefits of the Optimum Performance hardware.
Not @larr12 but have used their hardware:
  1. Just as good or better than the Ford hardware.
  2. Cheaper than the Ford hardware, by a large margin.
  3. The anit-rattle clips are miles better than what Powerstop includes with their pads.
 

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larr12

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Craig Brown

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I bought a UPR fuel line adapter and a pressure gauge so I can check my fuel rail pressure and see if the fuel pump, injectors, and fuel delivery module are all working properly. The parts came today, tonight I will start testing. I am still chasing misfire issues. I don't have any misfires, but PCM thinks that I do. I hope this will narrow it down. At least my tool draw is filling up.
 

Craig Brown

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I did my fuel rail pressure test tonight and I have a perfect fuel system. Key on engine off 57 Lbs., key off fuel pressure drops to 40 Lbs. over several minutes, engine running 63 Lbs. gauge steady no bounce, rev to 1500-, 2500-, and 3500-gauge goes to 65 Lbs. needle on gauge is rock solid no bounce. Rev hard 4500 still 65 Lbs. zero needle fluctuations. This a solid fuel system. Pump is good FPDM is good no injector leak down; fuel pump check valve is solid. And the gauge and adapter cost was $64.00. I wonder what a shop would have charged me to run that systems check?
 

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GTP

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Thanks for the PSA. I think it comes down to the pivot points at the floor.

But I use mine in both directions. No issues.
 

GTP

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1 old racer

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Gtp, your gonna have to post updates on this one.
 

GTP

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Gtp, your gonna have to post updates on this one.
Yeah, that was just a teaser. Parts ordered, one pair extra. These will fit OEM GT PP splitter only.
 
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JTM88

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Y


Yeah, that was just a teaser. Parts ordered, one pair extra. These will fit OEM GT PP splitter only.
I'm intrigued.
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