CorvetteForum - Chevrolet Corvette Forum Discussion - C8 Tech/Performance

10% off EVERYTHING we make at AMT Motorsport starts NOW

Mark@AMT Motorsport — Fri, 22 May 2026 10:56:05 GMT

It's that time again folks! Starting RIGHT NOW and running thru Memorial Day, every AMT product on our site is available at 10% off when you use coupon code "CF26" at checkout. This is your chance to save some serious coin on big ticket items like our Spherical Bearing Kit, The Wing of Power, Finger of God, X-Wife Drop Spindles, and will also yield substantial savings on Camber Kits, Spacers, Motor Mounts, Diff Mounts, Seat Mounts - oh my!

Head to www.AMTMotorsport.com to take advantage of the discounted pricing.

We've listed some of our products below in case you may be unfamiliar with what we do.

C8 Aero - The Wing of Power, Finger of God, Zebulon Splitter, Quick Release Splitter Hardware

The only trunk/frame mounted, reverse swan neck, all US-made, CFD and Wind Tunnel-tested, carbon fiber track wing available for the C8 - or any car. Pair it with a Zebulon front splitter and our quick release system, and you have a streetable track car with a 1.94:1 L/D ratio. There is no more powerful aero package available for the C8 Corvette. By a factor of 2. Period.

There's a lot to unpack, so click here to learn about all of our C8 Aerodynamic offerings

C5-C8 Monoball Control Arm Bushings

If you're looking for slot-car like handling for your Corvette then a set of monoballs is probably the best money you can spend on your car. The car is transformed and so much easier to drive on the limit. We use the best materials available and custom fit each part to your YOUR control arms. All you have to do it send them to us and we take care of the rest, and return shipping is included.

Follow this link if you would like to turn your car into a race car.

C5-C8 Ultralow Seat Mount

This is the lowest, strongest, safest billet seat mount available for the Corvette. It will put your seat on the floor if needed. Using this mount with the Sparco QRT-R seat I gained almost 2 inches of head room over MTI rails with a Sparco EVO. Our integrated sub belt takes the guess work out of installing your 5 or 6 point harness. Not only that but it will survive an 85G mostly-rear impact. This seat mount saved my life and it can save yours too - just hope you never need to find out!

Follow this link to get yourself low.

C7/C8 Titan Tow Hooks

Made from 7075-aluminum and hardened 17-4PH stainless steel, this US-made aerospace-grade tow hook could actually tow a space shuttle. So it'll look bitchin' on your street car or pull you out of a tire wall easy peasy.

Prepare for launch here

C5-C8 Adjustable Camber Kit

The product the launched our company is available for all C5-C8 Corvettes. If your car sees any serious track time than a camber kit is virtually required equipment. Set your alignment once and never worry about it again. Everything is USA made and guaranteed for life.

For more info on C5 and C6 camber kits follow this link. For the C6Z/ZR1 head over here. To solve problems for all C7s head this way.My C8 peeps should take a look seeright here

Differential Mounts - C5 and C6

Mitigate wheel hop and stop your trans from flopping around during hard cornering with our offerings for the C5 and C6 Corvettes. Rather than knocking off the same product that everyone else has for the last 15 years, we came up with fresh and updated designs to address short comings from competitors. These billet pieces firm everything up without a huge increase in NVH and they are guaranteed for life.

For the C5 check this out and for the C6 check that out.

X-Wife Drop Spindles for C5 and C6

Combine GSpeed design with AMT Motorsport manufacturing and what do you get? The best God-damned drop spindle on the planet that's what! Machined on our 5 Axis CNC, they start out as 70 lbs blocks and wind up as the 6.5 lbs beauties you see before you. Available in plain finish or your choice of anodized colors.

Learn more about the X-Wife by clicking here.

C4-C7 Wheel Spacers

We offer 4 different sizes of wheel spacers. Our 1/4" spacer uses the lip of the stock hub for centering and can be used with stock length studs. Our 3/8" spacer pushes the wheel out a smidge further but the ring on the hub is no longer effective. We recommend going to the 2.5" ARP studs if you're using a 3/8" spacer. We also offer 3/4" and 1" spacers with a machined lip for centering. These spacers should use the 3.25" ARP studs.

For 1/4" and 3/8" spacer head this way. For 3/4" and 1" go that way.

C5/C6 Vulcan Motor Mounts

These mounts are now on their third variation and better than ever. A single bolt keeps your motor from moving fore and aft, while vulcanized rubber dampens the vibrations so they're not as harsh as solid mounts. We now use a hard anodized 6061 center section to keep the 2 rubber pucks in each assembly where they belong. Make no mistake these mounts do not feel like the pillowy soft oil-filled gushiness of the stock mounts. You are definitely going to feel more of the engine with these mounts, but your 350 lbs lump of a motor will not be moving all over your engine bay either when performance driving.

Follow this link to order yourself up a set of motor mounts

C5-C6 Extended Gas Pedal

Our product makes heal/toeing your C5 and C6 Corvette a breeze. It's a cheap and effective mod to increasing your driving enjoyment and I guarantee you'll love it or I'll give you your money back.

To make your Corvette easier to drive at the limit, click here.

C7 M80 Adjustable Toe Links

After selling a different product for a number of years, we've decided to start making our own version of adjustable toe links for all C7 Corvettes. The previous product had fitment issues with various parts and quality issues with the heim joints. Trying to work with the supplier to correct the issues wasn't getting anywhere, so in order to best serve our customer base, we came up with the AMT Motorsport M-80 Toe Links which use 7075 aluminum, 17-4 PH pins, and FK Heim Joints for the strongest and longest lasting toe links on the market.

Head here to snag a pair.

Thanks as always for the support!

UCAN-II-C Scan Tool

TrevVette — Fri, 22 May 2026 10:09:24 GMT

Does anyone have experience with the UCAN-II-C Scan Tool sold by YOUCANIC? It costs around $430 and seems to have good features for the price. It has positive reviews, but some appear to be sponsored by YOUCANIC. One person claimed that it is actually rebranded Foxwell NT809 BT with some added features.
Any thoughts, opinions, or suggestions for a better alternative in this price range are appreciated.

V09 Radiator Cooling Improvements

Mark9 — Tue, 19 May 2026 21:59:37 GMT

As others have reported, the addition of the V09 radiator has made a tremendous difference in keeping both oil and coolant temps in control on the track. Prior to the addition, my oil temps would creep up into the high 240's and coolant temps would hit mid 230's. On long sessions this became an issue as the car did not appreciate those temps and I experienced reduction in power as well as some odd transmission shiftng behaviour (wouldn't down shift). Post installation using all GM parts, oil temps were 20-25 degrees cooler tracking coolant temps within about 5 degrees. Transmission temps stayed lower and stable throughout the sessions. On the street, oil temps run 30 degrees cooler than the coolant temperature whereas before they essentially tracked each other equally. It's the best "performance" mod i've done the the car outside of track tires and rims.

2023 z06 - "apps" update does not update

spinkick — Tue, 19 May 2026 18:31:51 GMT

Hey guys. Not sure if anyone else has run into this, but on the 2023 pre-android built in OS, there is still an apps store of sorts, and you are able to manually update all the built in apps there. Well, on my z06, there is an update available for the "apps" app, but it will never install when I hit update. I've tried resetting the system etc, but it never takes. Anyone have any cool work arounds? Dealers whenver I discuss onboard electronics always get that deer in the headlights look, a lot like my Equinox EV questions when I ask about flashing updates.. the techs just dont want to deal with it.

IT guy here so let it rip :)

They changed the MyChevrolet app....

MKC8 — Mon, 18 May 2026 17:31:03 GMT

And now I can't find anything in it. Easily.
Change for change's sake is a PITA.

What Is Top Tier Fuel?

Mitchell_B — Sat, 16 May 2026 12:26:11 GMT

Transmission and Engine Modul

Tinu Pace Car — Fri, 15 May 2026 15:30:42 GMT

Can anyone tell me what these two circled sentences mean? Was the second one the much-discussed transmission that wasn't very good? It's a 2022 C8 R HTC. Thanks

tpms relearn

bpk1959 — Wed, 13 May 2026 02:25:14 GMT

I switched wheels over to a set i ran last week at the track. tpms relearn worked great. put the street tires on after track day and again relearn worked perfectly. went back to the track tires for tomorrow's event and the rf won't trigger. anyone ever have this happen? any suggestions to get the rf to trigger? the other three corners trigger.

2022 C08 Convertible, Z51 Performance

Abby2022 — Sun, 10 May 2026 23:18:23 GMT

Hi all!

My husband and I bought our baby used in 9/24 with only 2500 miles on her. After a couple battery issues in the first month and a half, the dealership replaced it. She now has a completely dead battery, after starting her every month during the winter. She started great. A little hesitant, during our negative temperatures. After life took over some of the things, she is dead now. We have had a trickle charger (GM Corvette one) on her for almost a week and the charger is now showing some improvement. It�s obviously plugged into the cigarette lighter port in the frunk. We�re not sure if this is doing anything what we could possibly do to get her charged. All help is appreciated!!!!

Thank you,

Shara and Rob

Which track day tires for stock stingray wheels?

03Zcrit — Sun, 10 May 2026 00:16:17 GMT

Which 200TW or better tires should I get? On my old Viper I ran Yokohama Advan A052 for Sonoma, Thunder Hill and Laguna. Eventually I will invest in a dedicated track day wheel and tire setup but just bought the vette and would love to do a track day with something a lot stickier than the all seasons that the previous owner put on. I wish it had the pilot 4S's but alas he took those off and put on the all seasons and sold the old tires.

Frunk out for drag strip - car thinks hood is open now? 2025 2lt

DMS1970 — Sat, 09 May 2026 18:19:56 GMT

Do I just drive in spite of the constant messages? The car says stop and close hood. Will it let me launch it like this or is there a fix?.?

thanks

Ecm/ecu remove questions

BJ67 — Sat, 09 May 2026 14:16:11 GMT

I am about to remove my ECM and bring it to my HP dealer so he can send it to have it unlocked. I assume I need to completely disconnect the battery neg and positive cables from the battery and than remove the ECM. Anything I should be super cautious about at this time and also when I reinstall?. Thanks in advance.

CEL after a month with AWE Switchpath Exhaust

Semifighter18 — Thu, 07 May 2026 05:29:35 GMT

24' Z06. 10k miles trouble free, zero issues. Had AWE Switchpath cat back exhaust installed by a very reputable local speed shop which has installed more than a dozen C8 exhausts. No issues for a month and 500 miles. Today got a CEL (Code P3173 - Exhaust valve actuator). Cleared. Immediately came back with P3173/P3175 - same except other side and P060C (Engine Control Module). Codes will not clear. Gonna take it to the dealer next week.

Surprisingly I'm not freaking out (The P060C has me a little worried). I think this will get fixed, however, if anyone has any insight/guidance on anything I can do I'd love to hear it. I have contacted AWE to see if they have any feedback/help.

I have always been a tweaker of my cars. Very light mods, of which I think a cat back is one.......relatively harmless and warranty safe. But of course now I just shake my head and ask myself why I didn't just leave it stock.

Does Anybody understand the Charging System

tome — Thu, 07 May 2026 04:48:36 GMT

On a 2026? Scenario is that I get big voltage differences and don't understand why.

Example:
83 MPH........12.7 indicated on dash
Parked idling.....14.4
45 minutes later cruising 66 MPH..... 14.3
20 minutes later: 13.4 at 70MPH

Just doesn't look normal to me, any ideas?

MSRC Shock Leak

CorvetteSparky — Mon, 04 May 2026 02:56:11 GMT

I discovered that my left rear MSRC shock is leaking. No drips on the floor yet but it is getting things behind it on the chassis wet and there's dirt and gravel sticking to the blow-back so it's more than a weep. I seem to remember dealers telling C6 guys that a little weeping isn't a problem, or am I miss remembering? What's the current thinking on the C8? No weeping? Mine's a 2024 so still on warranty. Looks like there's a trip to the dealer in my future, but curious to know what to expect to hear from them. TIA