What pads and rotors are you running. Just got a ZLE and coming from a gt350. The gt350 I ran cobalt xr1 front and xr3 rear on girodiscs. Many people are saying the stock pads and rotors are great for the ZLE and can take a beating.
An old timer famous racing driver once said the fastest drivers are only doing one of two things on track at a time. They are either full on the gas or full on the brakes. Thats it, no in between. Once you are at that point, you arent going any faster...
What water / coolant ratio are you running? I was at Road America this past weekend (86-87F) and the car was short shifting on me as the sessions were going on. I can't determine if it's octane (knock) or oil temperature related. I would hit 293F oil and never any hotter. Even if I put the car in manual mode with the paddles, it would shift without me touching the paddles. High performance manual recommends 100 octane if it's 86F + out, but I was right at the cut off so I stuck with 93 but had major power issues the whole weekend.
Temps were in the high 80's and with high humidity. The car is short shifting or shifting strangely due to transmission temperature. I would recommend checking the transmission fluid level and setting the level at the track when the transmission fluid is 220-240 F. You can get an OBD gauge like the Banks Power iDash to monitor the trans temp.
@@RacingforALS Hmm. This is the first time I've experienced the short shifting problem. I did get my transmission fluid drained and filled at the dealer prior to this event. However, this dealer has done this procedure twice before and I never had a problem. I have a PDR, and transmission temperature never peaked past 232. It was consistently around 225.
@@Slurpee_12 225 trans temp is fairly low for a hot day, but if a shifting issue started after a dealer service, then I would suspect it's a fluid level issue.
@@RacingforALS I'll do the fluid check procedure. I was leaning towards oil temperature related because I could not exceed 293F. I could do a cool down lap, get full performance, and then short shifting would start again after it got hot.
@@Slurpee_12 I've hit as high as 298 F oil temps on hot days and 15+ laps. Oil sampling showed the oil was still good. I don't think your oil temps and trans issues are related.
Turn 1 - wayyyyy to early on turn in, nor do you track out all the way. The sooner the wheel can be unwound, the earlier we can be back on the throttle and give it more throttle. Nascar Turn 3 - Another early turn in. Front passenger tire should be to the right of the square patch. Turn 10 - I see min speed of 83. Even on a crazy hot day with same setup, aim for min speed 95. You're also not back to partial throttle pre-apex. When you do make it back to throttle, its 0 to 100% rather instantly, which is a bad driving habit. Its hard to tell, but I believe the nannies kicked in to stabilize the car. Be on throttle and smoothly roll into it, instead of off then stabbing it. Oak Tree - Missed both apexs. Here in particular, the car looks a bit understeery. With a track alignment, these cars love to rotate. I'm guessing the nannies are doing some work. Entry to Roller Coaster - If you wait to brake until going up hill, it much more effective. There's a lot of ABS usage throughout this lap. That's not the fastest way to slow down, but close. While I've never used the Hawk pads, I've been told they are horrible for brake modulation, which is likely why the ABS is so easily triggered. Give the Gloc 10 or PFC pads a shot. While they are more expensive, they will help you learn to be a better driver. Be sure to use all the track all the time. It will build the confidence to stay on the gas longer and brake later. Those are just a few things that stood out. More seat time with some coaching will go a long way. Best of luck!
@Zadnak1 thanks for the detailed response. I don't see the turn 1 issue, maybe it's the camera angle, but I'm about 12" off the left side. Am I missing something?
@@RacingforALS The turn in reference point is pretty close to where the aero is for when the front bumper lines up parallel with it. This video gives a good demonstration of turn 1. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xI1PKQ_Pet4.html
I've run DTC 70 pads in the front with DTC 60 rear, but greatly prefer the DTC 60 in front and rear. This is also for hard braking tracks like Carolina Motorsports Park. Equal braking performance with more modulation of the brakes.
