Tadge Juechter Says No C8 Aftermarket Tune For You

July 11, 2021 Off By Mike Vietro

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Corvette Executive Chief Engineer, Tadge Juechter, Says GM will not allow aftermarket tuners access to the C8 onboard computers

Image courtesy of Emelia Hartford

Corvette has always been a car aftermarket tuners love to extract more horsepower out of, but the C8 is making this much harder. When the C8 specs were announced stating that it would have the General Motors’ Global B architecture as the backbone electronic package, aftermarket tuners knew there would be issues modifying the car. The reason for this is that the Global B architecture system lets the computers control almost every part of the car. This means if somebody could hack into the car, they could start, stop the engine, apply brakes or more gas, and even apply turning force to the steering wheel on some cars.

Since the computers could control so much of the cars operation, GM has locked this system down as much as they could and are not so keen to open it up to 3rd party tuners. According to Juechter in an interview with MC&T, “The aftermarket crew is very talented and resourceful, and have been for years. So our business model doesn’t really cater to the aftermarket, we have to do all the things internally between Corvette just like any other General Motors product. Our desire is to make the car as hack proof as possible to protect our customers.”

Some tuners have been able to install turbos on the C8, but only with relatively small amounts of boost. To get the most out of the turbos, tuners have been forced to install a separate computer to manage the motor, a process called piggybacking. This process adds a lot of complexity and issues that are normally not good for
everyday drivability.

Juecther did note that due to their long-standing relationship with GM, Callaway will get a little assistance from the automaker with the C8 Corvette situation. This has to do with the customer and warranty data that Callaway supplies GM with from their buyers, but we’ve yet to hear any specifics from either company.

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This 1969 Chevrolet Chevelle Malibu is one of approximately 323 COPO Chevelle examples produced for the model year and was refurbished under previous ownership. The car is finished in Matador Red with a white vinyl roof over a white interior, and power comes from a 427ci L72 V8 paired with a four-speed manual transmission.

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Wayne F.’s Top Flight 1958 Big Brake Fuelie

I was talking to my friend, Dana, and he told me about this 1958 Big Brake Fuelie first sold in Santa Barbara in early 1958 by Washburn Chevrolet to Peter Trenor Stanley. I purchased this car and proceeded to talk to Mr. Stanley about its history. He had several photographs of the car which showed him racing the car throughout southern and central California. I was also able to track down and talk to the 2nd and 3rd owners; I am the 4th owner. After my purchase, I completed a body off the frame restoration and have had it judged twice, top flighting it both times!

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1956-1962 Corvette Hardtops – Priced from $4,888.
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1968-1975 Used convertible top assembly. Good condition.

Fully restored 1963 through 1967 factory hardtop restored by Nabers Brothers back years ago and has been in the crate ever since. This was restored specifically for 1966 Nassau blue 427 convertible. Very hard to duplicate and very expensive to restore. On sale this week for $5,000!