whats the part number for the o2 sensor? shoot even the lowly ecotech turbo has a wide band. I'm hoping you are right as the additional wot fuel will give a slight amount of "headroom" for mods to add a few ponies without a tune.

I'd sure install a separate dedicated WB sensor and guage to keep an eye on things. Next question. Stock dct tune and clutch won't likely take much more than about 100 or so more ft lbs without better parts and tranny tuning which is just as important to put the power down, I'm also curious and anticipate the ecu will code if a separate computer and dedicated injectors (port) add fuel. Once the ecm can't adjust back within expected values it's likely to code or go into limp home or rat us out to GM that the ecu is "seeing" something unexpected. Here's to GM offering an "unlock" for racers who are comfortable and willing to waive any warrenty service.

GM has honored quite a few repairs for enthusiasts that break the vette racing. That and the overall complexity of the car has led us to "lock down"

and a Zr-1 style 5k tune with a hacked modified ecu isn't a reasonable answer either. GM has to meet strict emissions and safety regs, so catering to the race crowd isn't a good biz case.

However, without being able to upgrade and customize the car, many folks look elswhere.

the ugly duckling new BMWrupa is already tunable and cracking 9's and kicking sand in the vettes face for lower $

GM needs to make the vette a solid platform for the performance enthusiast. And a few of us know that too much is never enough.

 

FINALLY have some time to update. Initial test a couple weeks back at Cresson MSR went well with monoball control arm bushings installed on the car. Adam was out with us to put in the fliers, 1:20-1:21 lap times on 94 degree day, C7Z06 would be in the 1:18-1:19 area. The car definitely had a 1:19 maybe 1:18 in it but not with the heat. We also battled a power steering issue that didn't end the day but definitely grew worse as the day progressed and temperatures increased. Heading to COTA this weekend to test sway bars.

 

I can't believe I forgot to update after COTA round one.

So COTA round 1 last month went really well with prototype sway bars and monoballs. Quickest time was a 2:26 ambient temps were about 91 degrees and we had 265F/315R Hoosiers on the car.


Fast forward to this past weekend and a LOT was done to the car.

Front Splitter, Frame Mounted Wing, Harness Bar, Harnesses, OMP Seats & Forgeline GS1R's wrapped in 295F/345R Hoosiers




We finished up the upgrades at 7am Saturday drove straight to COTA and hit the track around 11am when temps were already at 94 degrees and quickly climbed to 97 by the time we were out on track. Lots of rubber on track and high heat so it was very greasy but we still dropped 4 seconds off of our non aero time while battling a brake issue. Definitely more in the tank as far as times with better ambient temp and brakes operating like they were in our first COTA test.

High speed stability was brilliant, low speed was decent but will get much better when we finish our Bilstein Coilover kit and get it on the car.

 

Can you give us your impression of the events at 0:41, 1:30, and 2:19 in the last video. Thanks.
Pappy

 

Combo of temp and the amount of discarded rubber made the track very “greasy” plus we were getting a hefty vibration in high speed braking. By no means are those excuses I’m proud of how the car performed given the circumstances. All in all it was really hot and we asked Adam ( @SilveradoSS500 ) to effing send it and he did. With ambient temps that high the tires would overheat quickly so aggressive was the only option.

 

What wing is that?

Thanks

 

LG Motorsports GT2 Wing. Framed mounted.

 

0:41 - I hit the rumble on the left, car was loaded up at that time. Sent me sideways...also going off line so I could pass that guy.

1:30 - complete brake release as I was going for it, tad much entry speed.

2:19 - that’s pretty normal at COTA, shooting for 50mph min speed and I was at 48.2mph. Was 3pm and COTA is greasy in the afternoon, especially T20.

 

Looks like some slow driving, Ive seen faster C5's 😎

I like that tire setup! Front splitter looks crisp as well.
Heat management proving to be an issue? That tire vibe issue get narrowed in on?

 

I can comment on heat management... had mine at VIR 2 weekends now and the cooling is completely over-engineered. Driving hard for 35 minutes in the instructor group the oil stays under 220 and coolant under 210 with a Z51 car.

 

Lol there's more time in the car, it was hot. The temps have been really good, it got a little hot when really pushing the car in 97 deg ambient but nothing to be concerned over. Thinking the vibration was rotors, I have new ones on the way.

 

Good to know! Your hot shoe driver has my ol' C5 So I'm a wee bit biased to that old brute. Rotors makes a fair bit of sense. Was a tiny bit nervous it'd be the pow steering rack and maybe not liking the weight balance shift.

Anywho, I'll be circling back to yall when a C8 finally gets delivered on possible wheel setups for a vert. I know definitively when the Z06 variant shows up I'll want to talk about developing straight Ti exhaust.

 

We upset the power steering rack at MSR but it doesn't end the day just a nuisance. I have that C5 here for aero! Ti exhaust will be easy, I just wish we could tune these things!

 

 

Looks GREAT!!! Love the GS1Rs on the C8.

 

Excellent, because that'll be a mandatory exhaust for the C8Z! And awesome, that machine is a wicked ride haha.

Anywho, as the ECU from my understanding is quite heavily encrypted because of EPA laws, any thoughts on MITM attacks on the CAN network? Or perhaps going back to old school piggy backs? I'm not sure if GM has each engine sensor/trigger a discrete ID or if they still have analog sensors/triggers.

 

A few people are using piggy backs for the time being. Still waiting on HPTuners to find a way in. I've been watching closely for the first person to drop a MoTeC PNP kit, I know several are working on it.

 

I was told the word around the water cooler is that the finishing touches are being done as of October 21st this year that there’s definitely a trim level specific, electric floorboard lowering kit. Lower floorboard = accelerator pedal can travel further which can only translate to a faster car from the showroom simply unlocked after install. CONFIRM or DENY??! Thanks!

 

 

Drive by wire. Floored in its current state commands 100% throttle so the throttle body blade is 98-100% open. If for some reason it was allowed to go 10% over that it would result in it being 90% open, less air, less fuel, less horsepower. Someone was essentially telling you to refill your blinker fluid.