[khcoaching]

Originally Posted by GunMetalGrey

Cool, yeah there are lots of used EBCM's out there for $70 or less

I have the stock OEM supercharger off my ZL1 if you want it for $1000, but not sure if supercharging that engine is the best idea for longevity when tracking the car as much as you do

If anything get modded on this car engine wise, it will be a head cam combo. The other one I have has all the power!

Ken

[GunMetalGrey]

Originally Posted by khcoaching

If anything get modded on this car engine wise, it will be a head cam combo. The other one I have has all the power!

Ken

Yeah good call, makes sense

[khcoaching]

A few pics from the time attack last weekend -

[JTRATX]

The pic you have of the Z214 next to the Goodyear. Is the Goodyear a 305 vs the 315 of the Z214? If so, that's nuts.

[khcoaching]

Originally Posted by JTRATX

The pic you have of the Z214 next to the Goodyear. Is the Goodyear a 305 vs the 315 of the Z214? If so, that's nuts.

Yes, 305/30/19 vs 315/30/18

[GunMetalGrey]

Originally Posted by khcoaching

A few pics from the time attack last weekend -

Did you get any ice mode braking problems this time?

Can you comment on how severe and bad it was when you did experience it earlier this year? (was it bad enough that it caused you to almost go off the track and crash? Or was it minor and just caused you to overshoot the corner?)

I heard and read that in 2019 they improved and helped fix this issue but that it did not get rid of it completely.

[khcoaching]

Originally Posted by GunMetalGrey

Did you get any ice mode braking problems this time?

Can you comment on how severe and bad it was when you did experience it earlier this year? (was it bad enough that it caused you to almost go off the track and crash? Or was it minor and just caused you to overshoot the corner?)

I heard and read that in 2019 they improved and helped fix this issue but that it did not get rid of it completely.

Zero ice mode with the Z214s. I did feel some ABS, but it was minor.

When it has happened, it almost feels as the car accelerates, and typically I run wide, but not fun when you're at pace. Let me look at some data to see what I happening....

Ken

[GunMetalGrey]

Originally Posted by khcoaching

Zero ice mode with the Z214s. I did feel some ABS, but it was minor.

When it has happened, it almost feels as the car accelerates, and typically I run wide, but not fun when you're at pace. Let me look at some data to see what I happening....

Ken

Thanks Ken, it sounds like when you have experienced it in the past, it is not as severe as what I experienced considering I am literally going off the track and into the gravel or dirt bank. This gives me hope that the apparent update they did in 2019 has indeed helped fix or at least reduced the severity of the issue when it occurs.

[eimarshall]

I just stumbled across your ZL1 video on youtube…… cant wait for the update!!

[khcoaching]

Originally Posted by eimarshall

I just stumbled across your ZL1 video on youtube…… cant wait for the update!!

[khcoaching]

#16 Ridge Motorsport Park - May 23, 2023

Without Chicane 1:43.22 (PDR)

2019 Camaro ZL1 1LE - first outing

I wasn't sure if I was going to start a new thread for this car, but for at least the first few outings, I'll keep the ZLE updates in here as well. I'll add another post about the differences between the SLE and the ZLE...very fascinating and the data is amazing.

My goal this week was to do 3 half days to shakedown the car, but ended up only being able to 2 sessions of the first day. (more later as to why) I picked the car up from all the updates/servicing, drove it home to pick my gear and then headed right to the track. Conditions were amazing with 65 degree weather and a light turn out for the evening session.

First, let me go through what the car has and what was done to it.

2019 ZL1 1LE M6 - 15K miles

- MCS 2 way coilovers
- APR Wing
- Half cage
- Rotofab/Cat back - Tune

Updates/Service items

- All fluids changed
- APR front studs
- Giro front rotors/Ferodo 3.12 pads
- New OEM rear rotors/ Ferodo 1.11 pads
- Airbag light fixed
- BMR rear toe and upper control arms
- Updated Alignment (-3.5/-2.5)
- Lift pads
- Intercooler bleed
- Weapon X Intercooler
- New rear 3Rs
- Worn front 3Rs
- Baseline MCS clicker setup (FR C-8 R10 / RR C8 R?)

Session #1

I decided to run the car with the PTM in Race, as I didn't know the car yet. First impression was the front of the car was very loose under acceleration and the car wandered....a lot. Very much a characteristic of the cold 3Rs..but this was a bit sketch. It got a bit better as the tires warmed up, but I knew I needed to add some rebound in the front. I ended going .01 faster than my best ever SLE lap time, but not thrilled with the front of the car handling wise. Initial impressions were:

- Strong motor, but not crazy fast.
- Amazing brakes
- Extremely good rear grip
- Better clutch than the SLE
- The transmission shifted easier and the ratios worked much better.
- Pretty severe understeer in long radius corners.

Session #2

I bled the tires down, added rebound to the front, as well as took out a little compression to get the front to stay down. Immediately, much better and I was rewarded with some solid 43s included a PB of 43.22 (PDR) and 43.29 (AIM) With the TC on, I could basically drive it the same as my SLE and pretty much did just that. I did have to wait on the front to regroup after the front tires went away, I turned the TC off and started to build into a pace and was tracking another low 43 when the car went into limp mode...Limp mode as in, it idled, but would respond to the gas pedal and I had to be towed in. Bummer, but overall pretty happy.

When I bought the car, I knew it had a history of this, but it only happened on track and until it failed, I didn't know what it could be. The codes were: P018B and P2635 - both relating to fuel pressure. I cleared the codes and it fired right up. So that was that.... 2 sessions, a PB and now to figure out the limp mode issue. I was also hoping to try it with the square setups, but that will have to wait.

For context, here are a few screenshots.

1) ZLE vs SLE



2) Lap times from last week's On Grid Time Attack. We would have been #2 overall on shagged front tires. Very happy and the car is going to be a monster.




Next up is in an in depth comparison.

[khcoaching]

ZLE Limp Mode Update -

During my post track day inspection, I found this in the L/R wheel well. Even though the front of the wheel well harness had been moved, with the lowered MCS suspension and the big T7 G-out, it bottomed hard enough to touch the harness on the rear of the wheel well.



Here is the relocated harness, now all on the side of the wheel well.

[Open Circuit]

Originally Posted by khcoaching

The car clearly likes the shorter gearing and given the stock motor and stock tune, when it come to a time attack, the shorter tire will be the way to go.

Stock motor and tune ?
I guess I missed where you removed the LT2 intake and went back to stock tune. Couldn’t get those bits dialed in ?

[khcoaching]

Originally Posted by Open Circuit

Stock motor and tune ?
I guess I missed where you removed the LT2 intake and went back to stock tune. Couldn’t get those bits dialed in ?

It still has the LT2 intake and stock tune. I did - try - a mail order tune and I lost top speed with it.

Ken