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NC1 Miata Sonoma Raceway 1:55.6 2025-04-17
Phfong
Level:
Amateur
Phfong
Hooked On Driving - HPDE
Lap Date : 18 Apr, 2025
1min 55.593sec (-1.97s)
Sonoma Raceway (Long)
Mazda Miata MX-5 NC 2009 (Phfong/V730/225/R10)
Medium
Tire: 200 V730
Brake: G-LOC R10
Tire Size: 225/45/17
Published on 25 Apr, 2025

First time to Sonoma this year, with suspension, more camber, and sway bars. Improved 3 seconds, had some traffic heavy sessions in the middle of the day but later sessions had clear air. Had some low 1:55s but ran into traffic or had a massive skill issue like in this lap, not shifting down to 2nd. Optimal for the day was 1:54.29.

Car felt a little down on power later in the day, maybe pulling timing from high IAT, or maybe its from my overrevs from downshifting at T11 damaging the engine somehow OOPS.

Need to work on spreading out the rotation through the turn better. Some turns (such as T6, T7), I slow down a lot and then rotate the car mid corner a lot, this inhibits my ability to keep up min speeds.

* Choking the car on exit, not lightening hands and death gripping too hard after mid corner
* End up scrubbing the tires and understeering on exit
* Need to listen to the car more through the steering, my hands are light and communicative on entry and braking, but exit has deathgrip
* T11: Turn in earlier and apply throttle earlier. Rev match timing needs work, I overreved by 200-300 rpm when letting out clutch a few times today. 
* T7: Turn in earlier and carry more speed, a good exit in T7 sets up the back half of the track
* T2: Super bumpy now, but I’m pretty sure apexing it is still fastest even if my diff won’t work correctly over the bumps. Maybe try getting further left while still being parallel to curb on turn in, feels like I’m pinching the turn a little bit.
* T4: Brake a little later and carry more speed

* 225/45/17 V730 (9th day rear, 1st day front) on 17x9 PF01
* 27 PSI hot all around
* GLOC R10 Front R10 Rear
* Xidas Race Suspension (From full stiff)
* 15F/14R
* Progress Sway Bars
* Soft front, soft rear
* Goodwin Racing RoadsterSport II Axleback
* Stock LSD
* Rear Chassis Brace and Aftermarket X-pan brace (I.L. Motorsports)
* Stainless Steel Brake lines
* ATE Type 200 brake fluid
* Alignment
* Front
* -3.5 deg camber
* 5 deg caster
* 0 toe
* Rear
* -2.5 deg camber
* 0 toe

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