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  1. Tune revision needed for Kooks long tube headers?

    They are right. Nothing to change on these MAP based cars. On the MAF cars you might need to adjust fueling a tad if you are actually flowing more in because you are getting more out faster, but not with the s650. These cars dont care what intake or exhaust you are running. Now if you locked...
  2. My Car Feels Slow...

    Here was my last one a 23 HC challenger. One month a part stone stock on 93 and the DRs and then tuned only on that same 93 in the tank on the same tire, same track. Then bonus run on tune only E85. Thats almost 10mph gained from stone stock to E85 tuned. Stock Tune only 93 E85 Tune only
  3. My Car Feels Slow...

    No but I know Zdungho. And your 16 was one of the cars that has the cat recall out. The 2020 cars came from the factory with the updated PCM strategy for much higher cat over temp enrichment. So my advice if you haven’t done the recall, don’t. You’ll regret it. And Z tuned one of my...
  4. My Car Feels Slow...

    They have their place for sure. You should drive a C8 corvette. They are so watered down on the pedal, the throttle controller is necessary to feel like you even have a sports car. And in all honesty, in the tune most tuners me included change the pedal demand to make the car have more punch...
  5. My Car Feels Slow...

    A 6speed properly driven s650 on an E85 tune against a heat soaked COT suffering Hellcat on the highway is a drivers race. The hellcats untuned will get one run then will be fat ladies walking in sand after that. They are hobbled by the EPA cat over temp settings from hell. They go 9.0 rich...
  6. My Car Feels Slow...

    I hear this sad tale day in and out. Then I tune them and they are out there running with stock hellcats, laughing at FBO camaros and M cars. Get a tune. Cased closed.
  7. 10r80 harsh shifts on track

    I dont know honestly. Im sure you can use a 26 asbuilt data for the TCM but I would be guessing. I stay away from forscan since I can do most of what I want via HP Tuners. But the odd ball stuff like changing the redline on the dash or the other stuff like changing the white driving lights to...
  8. 10r80 harsh shifts on track

    All these bad bitches is where the magic happens for shifting up and down smoothness.
  9. 10r80 harsh shifts on track

    Depends on the update. I've seen these old setting on several of the early 24's. Not since those though. These are all the differences between the early 24 and a 26. All of them have hundreds of sub folders and parameters and tables under them.
  10. 10r80 harsh shifts on track

    Depending on how early of a 24 you have, I found the early cars have real harsh shift modulation vs the later 24s and then the 25/26 cars are WAY better on part and heavy throttle shifting with all the newer tq modulation settings. Any time I tune one of the older 24's, I always transplant in...
  11. How in the heck do you turn on steering assist on 2024 GT Premium?

    Oh we learned this the hard way lol. You can enable lane centering in the adaptive cruise control menu. I too didnt think we had it like the BC cars do but we do. Only if you have adaptive cruise control though I believe. But its not in the lane keep assist menu, its in the adaptive cruise menu.
  12. GT Premium Ordered! Woo-Hoo

    Have you checked inventory? I would be willing to bet there is one within 100 miles of you that fits what you ordered.
  13. AT Shifting poorly when cold

    This is normal until the trans gets to 140f. Drive it nice and enjoy it once the trans fluid comes up to temp.
  14. Ungoverned top speeds

    And if you're wondering what we can raise the top speed to, well we have you covered I bet...
  15. Ungoverned top speeds

    Auto DH/PP is 155 and normal auto GT is 145. I have all three tune files sitting here for all three as 2026 modes. Also this is 10 speed cars. I have a manual DH as well, and that one shows 166mph.
  16. Dark Horse with 25mm Spacers!! Not sure..

    The DH looks sick. Make it look like the handling package car.
  17. Dark Horse with 25mm Spacers!! Not sure..

    There is no cutting needed. 25mm spacers work correctly and do not hit. And all DHs have mag ride standard FYI.
  18. Do I need wheel spacers for my new rims?

    That’s not an issue with hubcentric spacers.
  19. Tuning base GT?!?

    No does not. The pcm infers the alcohol content via the widebands.
  20. Tuning base GT?!?

    Damn you really polled the audience didnt you lol.





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