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  1. Renntech

    Arizona Sold: 2024 Ford Mustang GT Premium - Shadow Black - 10spd Auto

    2024 Mustang GT Premium – Shadow Black Price: $46,700 Location: Scottsdale, AZ Mileage: 6,111 Transmission: 10-Speed Automatic Title: Clean, lien on title. Original MSRP: $57,835 VIN: 1FA6P8CF5R5424218 Selling my 2024 Mustang GT Premium in Shadow Black with Black Onyx leather-trimmed interior...
  2. Renntech

    Finished the Whipple Installation all by myself :)

    Very impressive, looks absolutely killer. How much total wrenching/auto-mechanical experience did you have before you approached a task like this one?
  3. Renntech

    Recommendations for Autocross tires?

    I had the R888Rs on my M3 and thought they were fantastic. Extremely loud on the highway, but the grip was phenomenal. That car also made 725whp and the rears could hold it no problem. Magical compound.
  4. Renntech

    Speed limiter 140mph?????

    There's never a time to hit 150mph on a public highway safely. But there's considerably better times than others for sure lol. I watch a fair amount of 1320video texas street footage on YT, and some of those guys have 100% been arrested and taken to jail that night 🤷‍♂️
  5. Renntech

    Looking to move from BMW M340 to Mustang GT...looking for comments

    I well and truly believe the audio system in specifically your car is defective, because the B&O really isn't all that bad at all. I'm quite a stickler for quality audio and I don't have meaningful complaints, other than perhaps somewhat muddled bass. My previous cars were an M4, M6, and M3 all...
  6. Renntech

    Debunking the S650 Acceleration Timers & Track Apps

    HAHA wow, that's actually the craziest one I've seen yet... 0.94 60 foot 🤣 might as well be an NHRA Pro Stock. The 10.11 is also wildly off too, by at least ~2 seconds.
  7. Renntech

    I don't get the Dark Horse vs GT

    Absolutely, this is what I meant. The PP on the S650 is not as aggressive as the PP2 offered on the the S550. The throttle house guys mentioned this in their video. I also think PZeroes are such an inferior tire to PS4S. I wish Ford put Michelins on the PP S650 because I think even just that...
  8. Renntech

    I don't get the Dark Horse vs GT

    Here's your differences. These lap times are all set by Thomas Holland of Throttle House, who is actually a very talented driver. It's worth noting the S650 PP is noticeably slower than even the S550 PP. The performance pack options that came on the last generation Mustang are more aggressive...
  9. Renntech

    My experience forcing a cheap S550 spoiler onto an S650 mustang

    Looks awesome, job well done! I also have been considering the same thing concerning the very left and right extremities of the spoiler. I may remove it and just sink two screws upwards into the spoiler for good measure. I've been keeping a keen eye on mine, and even in 100mph winds it appears...
  10. Renntech

    Debunking the S650 Acceleration Timers & Track Apps

    I know that FORScan allows you to adjust tire circumference for the F-150. I would expect a similar capability exists for the Mustang. It would be best to let a dealership take care of it if you get new wheels/tires that are noticeably different from the original equipment.
  11. Renntech

    Debunking the S650 Acceleration Timers & Track Apps

    There's been some contention lately on the accuracy of Ford's Sync4 performance timers built into the car's infotainment system. (See thread: "S650 is fast") Many people know the displayed numbers are bogus, but I thought I'd compare them to GPS readouts to put the nail in the coffin. I've even...
  12. Renntech

    S650 is fast

    Just small FYI, the G80/G82 BMW M3 and M4 have an absolute weapon of a engine (3L twin turbo inline-6) and I think you're not up to date on the actual power they make. They make our 5.0s positively slow in comparison lol. Here's my friend's personal car: This is his 2024 M4 xDrive and made 495...
  13. Renntech

    My experience forcing a cheap S550 spoiler onto an S650 mustang

    Yes, that's what I meant by "trunk wedge" in my original post. Once you've removed the trunk liner, you have access to four 7mm nuts, and seven 10mm nuts. Once you've backed all of them off, you can shimmy/wiggle the entire edge of the trunk completely off the car. This is what spoilers attach...
  14. Renntech

    My experience forcing a cheap S550 spoiler onto an S650 mustang

    Thanks! They are 20x10 and 20x11 Velgen VF5 wheels in gloss gunmetal
  15. Renntech

    S650 is fast

    Here's a Dragy readout for my previous car. Similar 0-60mph, 60 foot, and quarter mile ET to what you're claiming your mustang can do. This was a BMW M6 with 605rwhp. I don't need to "believe what I want to believe", I know the limitations of the car we BOTH HAVE. Filters and wide tires aren't...
  16. Renntech

    S650 is fast

    I'm sorry but these numbers are nowhere in the world of reality, especially with 91 octane. You need to go to an actual dragstrip and get a printed timeslip. I promise you it's going to disappoint you. Ford's readouts so inaccurately represent the car's performance that it should be criminal...
  17. Renntech

    My experience forcing a cheap S550 spoiler onto an S650 mustang

    Hey all, I've been looking online to see if S550 exterior mods are compatible with the S650. The S550 has been around from 2015 - 2023 and the aftermarket is heavily saturated with products, whereas the S650 market is just barely beginning to crawl. Options are extremely limited. In my...
  18. Renntech

    Let's see your Gauge Details, What is Normal?

    "Oh my god! It's like standing on the sun! This city should not exist. It is a monument to man's arrogance"





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