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Old Mar 2, 2020 | 10:40 AM
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Default C8 & mods

I’d imagine most new C8 owners probably aren’t interested or perhaps they have them performed at a shop but is there any concern among you guys with modding this car?
I was at the Autorama in Detroit this past weekend and had the opportunity to take a peek out back.
It looks like most mods are going require the driveline to be dropped from the car. Not really something most people would be comfortable with in their driveway.
Obviously this could translate into high labour costs which were not as much of an issue previous models.

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Old Mar 2, 2020 | 10:52 AM
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Will likely increase labour costs for certain mods yes. That's part of the game, gotta pay to play. I plan on going twin turbo myself so I am waiting for the Z06 and just upgrading whatever turbo's that comes with.
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Old Mar 2, 2020 | 10:57 AM
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Originally Posted by blue_bomber697
Will likely increase labour costs for certain mods yes. That's part of the game, gotta pay to play. I plan on going twin turbo myself so I am waiting for the Z06 and just upgrading whatever turbo's that comes with.
Absolutely, that would be the best play but everything I have been reading is saying the next Z06 may be NA?
Im really interested in seeing what the aftermarket has in store for this car with regards to FI. Certainly some big challenges which on previous models were just tweeks.
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Old Mar 2, 2020 | 10:59 AM
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The biggest issue is the ECM/ECU. Is it going to be able to be tuned? How long before it gets cracked or will it? What do over the air updates do to a modified tune/ECM? IF you can't tune it, most mods are worthless.
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Old Mar 2, 2020 | 11:00 AM
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I don't see any low hanging fruit on the mod side. Currently with encryption and Global B architecture it appears to be Pandora's box if you attempt much. I suspect some tuners will get involved with GM allowing them access, but not for a while.
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Old Mar 2, 2020 | 11:08 AM
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Originally Posted by Zymurgy
The biggest issue is the ECM/ECU. Is it going to be able to be tuned? How long before it gets cracked or will it? What do over the air updates do to a modified tune/ECM? IF you can't tune it, most mods are worthless.
Wow yes that’s another consideration. I know the ZR1 crew pays somewhere around 2k for a tune. Not sure what’s involved but sounds like yet another obstacle. Due to the fact there will be many, many more of these on the road it makes sense for the aftermarket to take a shot at cracking the ecu on this car. So what about these updates, will GM be able to see there has been an ecu ‘breach’.
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Old Mar 2, 2020 | 11:12 AM
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Originally Posted by 97 SC Cobra
Wow yes that’s another consideration. I know the ZR1 crew pays somewhere around 2k for a tune. Not sure what’s involved but sounds like yet another obstacle. Due to the fact there will be many, many more of these on the road it makes sense for the aftermarket to take a shot at cracking the ecu on this car. So what about these updates, will GM be able to see there has been an ecu ‘breach’.
It's not a function of "cracking" the ECU, it's encrypted and has to get it's hand shake from the General. Without knowing the encryption, it is effectively impossible. Aftermarket would have to offer a full ECU replacement.
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Old Mar 2, 2020 | 11:13 AM
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Originally Posted by Phil1098
It's not a function of "cracking" the ECU, it's encrypted and has to get it's hand shake from the General. Without knowing the encryption, it is effectively impossible. Aftermarket would have to offer a full ECU replacement.
Is this how it works with the ZR1 as well?
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Old Mar 2, 2020 | 11:17 AM
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Keep in mind the transmission will be a weak link for significant power for a while till the software is modded and hardware upgrades may come available. On the DSG/PDK side, the software is so heavily integrated with the engine software, that there were a number of check sum hurdles to find and overcome before finding out what can be modified (pressure on clutch plates, shift speeds, etc., etc). - lots of complexity. Probably even moreso with the Corvette having different modes.

It will all get there eventually, but it will take a bit and some trial and error.
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Old Mar 2, 2020 | 11:25 AM
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Originally Posted by Lashedup
Keep in mind the transmission will be a weak link for significant power for a while till the software is modded and hardware upgrades may come available. On the DSG/PDK side, the software is so heavily integrated with the engine software, that there were a number of check sum hurdles to find and overcome before finding out what can be modified (pressure on clutch plates, shift speeds, etc., etc). - lots of complexity. Probably even moreso with the Corvette having different modes.

It will all get there eventually, but it will take a bit and some trial and error.
I think this is both 100% accurate and the understatement of the year. I think because of modes and ALL the software for the DCT that is integrated into the engine ECU, A LOT of development would be needed, like several magnitudes more.
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Old Mar 2, 2020 | 11:33 AM
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I have zero intention to mod this car... any tune voids the powertrain warranty. Going to just drive it... a lot.
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Old Mar 2, 2020 | 11:35 AM
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Gone are the days where you just changed a couple values for 1-4 skip shift and were on your way I guess lol.
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Old Mar 2, 2020 | 11:37 AM
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Originally Posted by 97 SC Cobra
Gone are the days where you just changed a couple values for 1-4 skip shift and were on your way I guess lol.
Long gone.
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Old Mar 2, 2020 | 11:39 AM
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Originally Posted by Tool Hoarder
I have zero intention to mod this car... any tune voids the powertrain warranty. Going to just drive it... a lot.
I can appreciate that as well. I’ve said that with every car Ive had and ended up whoring it out anyway.
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Old Mar 2, 2020 | 11:40 AM
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Originally Posted by 97 SC Cobra
I can appreciate that as well. I’ve said that with every car Ive had and ended up whoring it out anyway.
Me too
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Old Mar 2, 2020 | 11:43 AM
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Originally Posted by Tool Hoarder
Me too
😂😂 Well where there’s a will and enough money there is a way. Super excited to see these on the road even if they are all stock for a bit.
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Old Mar 2, 2020 | 11:44 AM
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My last fun car was a Mustang and after that mod fest, I had to swear a vow of stock on the Corvette to get the green light to buy.
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Old Mar 2, 2020 | 11:45 AM
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Originally Posted by 97 SC Cobra
😂😂 Well where there’s a will and enough money there is a way. Super excited to see these on the road even if they are all stock for a bit.
I've learned my lesson with my last 5 Corvettes... always jump in deep and end up wrenching more than driving. For me, the fun is driving them now vs. making something custom. If anything, the car will get some nice wheels and maybe a Corsa exhaust, but it seems the stock NPP system is very aggressive in track mode.
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Old Mar 2, 2020 | 11:48 AM
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Originally Posted by Phil1098
My last fun car was a Mustang and after that mod fest, I had to swear a vow of stock on the Corvette to get the green light to buy.
Well I’m sure you can tell by the name we came from the same place 👍🏻. I reneged on that with in the first year but I’m still married 17 years later lol.
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Old Mar 2, 2020 | 11:51 AM
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Originally Posted by Tool Hoarder
I've learned my lesson with my last 5 Corvettes... always jump in deep and end up wrenching more than driving. For me, the fun is driving them now vs. making something custom. If anything, the car will get some nice wheels and maybe a Corsa exhaust, but it seems the stock NPP system is very aggressive in track mode.
Agreed, I heard one start up at the movies a few months ago and it sounded awesome. I have no idea what mode it was in but I was pleasantly surprised.
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