Quote:
Originally Posted by SEAT TIME RULES
THX, I'm putting the CBC on it...
Good to see you again Chet. All those years on the EVO Forums...
I'm looking to see if anyone has extensively tracked their S55 with 20-22lbs of boost from a reliability standpoint and also any cooling issues..
Roughly a stage 1 tune...
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The M4 GTS targets 21.x PSI, a few owners track their cars regularly. I'll probably log 15-18 lapping days on mine in 2020. I have zero concerns about the S55 holding up thermally, structurally, or with oiling.
A little concern around spinning the crank hub. On the 150mph -> 80mph braking zone at my home track I try not to bounce off redline with downshifts. I've found I can sneak in a downshift mid-corner after trail-braking with the DCT, with sport+ the rear would wiggle a little but not to the point of risking a spin.
AFAIK manuals weren't as susceptible to downshift induced crank hub spins, probably due to drivers being a bit more cautious about bouncing off redline with the downshift.