Does computer update destroy the tune?

[redZ28]

I happened across a discussion elsewhere in the forum regarding a computer update that was needed to solve a rough idle/CEL.

This made me wonder what would happen to me if I needed something similar (now have a Maggie and a Hennessey tune). Would a computer update mean that would have to go back to Hennessey for a reinstall of the tune?

[Capthowdy]

depends what the update consits of, the dealer will see your aftermarket tune though so youll want to goo back to stock for the update then put tune back in.....

[B-rad]

Now that you have a tune from Hennessey and a maggie, I would forget about updates from GM. Your drivetrain warranty is gone now. As long as the car is working fine I would do nothing. If you have any issues, take it back to your tuner.

[xx_ED_xx]

Yes after market tunes will be written over if you go back to GM

[IROCanSS]

Agree... I never got the HVAC and PDI update and now I can't. The shop has my tune saved but not worth the trouble.

[redZ28]

I know that I no longer have the warranty option for the drivetrain, but am still curious about computer updates, should I ever need or want any.

Some thoughts:

- I wouldn't think that a hvac update would affect the tune (or be voided by my modifications).
- Something to consider maybe would be stopping by the dealership prior to my next visit to Hennessey, to request any updates for computer/hvac/radio/transmission/etc ? Of course, a list of updates would be nice to know!

I suppose that ideally Hennessey would get all of the updates and install them for me whenever I visit. I haven't asked if this is an option, does anyone know if the independent shops can get such updates?

[Sales@Hennessey]

Originally Posted by B-rad

Now that you have a tune from Hennessey and a maggie, I would forget about updates from GM. Your drivetrain warranty is gone now. As long as the car is working fine I would do nothing. If you have any issues, take it back to your tuner.

This is a false statement....

The Magnuson Moss Warranty Act states that the warranty on any vehicle may not be voided due to an aftermarket part unless it can be proved that the aftermarket part caused or contributed to failure in the vehicle. Many dealers are accustomed to supporting enthusiasts. When considering vehicle purchase or warranty claims, attempt to work with a performance oriented dealership that has the reputation of working with customers.

[Sales@Hennessey]

Originally Posted by redZ28

I know that I no longer have the warranty option for the drivetrain, but am still curious about computer updates, should I ever need or want any.

Some thoughts:

- I wouldn't think that a hvac update would affect the tune (or be voided by my modifications).
- Something to consider maybe would be stopping by the dealership prior to my next visit to Hennessey, to request any updates for computer/hvac/radio/transmission/etc ? Of course, a list of updates would be nice to know!

I suppose that ideally Hennessey would get all of the updates and install them for me whenever I visit. I haven't asked if this is an option, does anyone know if the independent shops can get such updates?

Always tell the dealer that you have a computer upgrade before any repair. That way you have made it noted and if they flash the computer, you are able to hold them responsible. Call us if you have any questions.

Speak to you soon,
James

[Beefman]

Always ask James or any of the other "experts" at Hennessey. I had my car tuned with them and they are very supportive and have done a fantastic job on my vehicle.

[mtcwby]

Originally Posted by redZ28

I know that I no longer have the warranty option for the drivetrain, but am still curious about computer updates, should I ever need or want any.

Some thoughts:

- I wouldn't think that a hvac update would affect the tune (or be voided by my modifications).
- Something to consider maybe would be stopping by the dealership prior to my next visit to Hennessey, to request any updates for computer/hvac/radio/transmission/etc ? Of course, a list of updates would be nice to know!

I suppose that ideally Hennessey would get all of the updates and install them for me whenever I visit. I haven't asked if this is an option, does anyone know if the independent shops can get such updates?

There are certain updates(ie HVAC, Radio) that will have no effect on the custom tune you have in your car. You can have them updated with no problem having them performed. Just be sure to let the dealer know to not update anything to do with the engine, so they don't mess up your custom tune.
As far as updates for engine and transmission, you shouldn't need them. The tuner that did your custom tune has probably already addressed any issues that need improvement and a flash from the dealer wouldn't improve on anything anyways.(except non engine, tranny related items)such as HVAC, radio, etc.