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  1. Pushing S550 Mach1 on track with less than 1/2 tank = burnt fuel pump

    Anywhere below 1/2 tank I get a stumble in longer left handers. Running 200TW 305. I try to keep gas above above 2/3 full at all times so basically fueling up every session. Some tracks I can get away with going below 1/2 tank.
  2. HELP! Rear Subframe bolt Cross Threaded

    Man that’s good news that there was enough meat left to fix it!
  3. Track Time Limited due to High CHT

    I'd lose my mind going through that many motors. The car isn't that great of a track car to be dealing with that. What CHT and oil temps are your running? what cooling upgrades?
  4. Track Time Limited due to High CHT

    I’d start to get concerned at mechanical longevity at those temps. My 2021 base with no tune will pull power at temps exceeding 235 CHT. No warning but you can tell it’s doing it. My 2019 PP2 stock tune would also do this.
  5. Track Time Limited due to High CHT

    This is a great data point that not everyone needs to go as far down the rabbit hole and to take it a step at a time. The heat generation goes up exponentially as you drive in the 9-9.5/10 range. If you’re not driving there, the cooling modification list drops dramatically. I will say of all...
  6. Base Radio upgrade?

    Thanks for the input— maybe I’m describing my wiring diagram in my head incorrectly for the fronts—I’m gonna feed amped front channels up to near the HU, into the passive crossover boxes. Then feed the woofer outputs on the crossover into the factory front L/R wiring at the T harness to power...
  7. Base Radio upgrade?

    My other couple cars have some seriously better factory sound—was hoping to get this thing somewhere in the ballpark since I think I’ve got the most expensive parts just sitting in my basement.
  8. Base Radio upgrade?

    I know there's a bunch of threads.. I searched quite a bit, but couple questions based on what i've read... 2021 Base w/ 4" screen that I'll keep for now... One day I'll switch to the 8". Looking at upgrading the system some... I have an Alpine XA90V 5 channel amp that has hi level input...
  9. How difficult to upgrade base brakes to PP brakes?

    If you street and lightly track you’re fine swapping the calipers. However, I’ve tried base master/booster, base boostr / pp master, and finally pp master/ booster in my 2021 base. Didn’t get consistent pedal until I swapped master AND booster. Vorshlag stated this way back, I tried without...
  10. HELP! Rear Subframe bolt Cross Threaded

    That sounds like a probable cause—someone got it buggered on the previous spring install and just sent it with the impact. I’m not sure there’s enough meat in there for a helicoil. I’d definitely try tapping and chase or replace the oem bolt, but if that doesn’t work maybe there’s enough meat...
  11. HELP! Rear Subframe bolt Cross Threaded

    I’m curious too, this sounds like you’ve ripped the threads out with the shitty oem bolts that double as cross threading taps. This may end up a bit more intensive than cleaning the threads with a tap.
  12. Should I run 305/315 stagger on square rims, or 305 1st square set + 315 2nd square set?

    I rotate about every hour. But I go for max life span. I get different wear front to back and side to side. Heavily dependent on the track. I’m one data point, but it would grind me seeing uneven wear require dropping $2k more frequently I get -3 in front using steeda bump steer arms (lose...
  13. G-Loc Brakes

    The R18/R12 combo I daily isn't near as noisy as other cars I've street driven with various GLoc pad compounds. I do wonder if it's the Titanium pad shims (from OPM) that quiets them down? I will caution--the brakes are like a on/off switch when ice cold. I wouldn't toss the keys to just...
  14. Coolant reservoir relocation

    Whoa that would be nice to get it moved back over there as long as sitting on top of exhaust manifold didn't have that adverse of an effect
  15. Adjustable shocks - Steeda vs Koni opinions?

    At that price point go with bilstein monotubes and you won’t have to crawl around your car to adjust anything
  16. How come the s550 tramlines so bad?

    My experience is any tire 275 or less tracks very well. 305 you have to hang onto the wheel and pay a little more attention. I’d just check my front toe with toe plates for starters
  17. What is algorithm to calculate oil change?

    There’s definitely a load % or RPM and time component to the equation. From a fresh reset, I can flag an oil change required message in a 2 day track event.
  18. Seat recommendation for dual purpose car

    Not uncomfortable for my 150lb bony ass to sit on with the padded sleeves you see in picture.
  19. Seat recommendation for dual purpose car

    Thinking eye bolts came with sub harness. Brackets were cut from scrap I had laying around. This is the sub harness
  20. Seat recommendation for dual purpose car

    Sub belt helps keep waste strap from riding up off hip bones.





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