MichaelKestner

Just bought a slightly used C63 Coupe yesterday. Is there any way to determine whether it has a tune WITHOUT doing the following?

1. See if it runs past the stock 155 mph speed limiter
2. Pull ECU and send to a tuner to check
3. Go to a dealer and have them check
4. Dyno test
5. Quarter mile run

Thanks for any insight.

Merc63

limter on dyno.

csexty3

I'd stay the hell away from (3) IMHO.

what about doing a quick pull with a local 2012+ C63? a quick 20mph-100mph won't take long at all and is still safe to do.

bluejae

i don't really see a way to find out unless you can track down the previous owner...

it seems like you're looking for a safe and free way to find out... which rules out racing another c63... even if you were to find a c63 to race, it would need to have the same options as yours... the performance package is especially important...

I am Jeff

If you don't do any of the items on your list, what's the point of finding out if you have a tune? If you're curious, just slap it on a dyno and see what numbers show up.

cyberorth

I am thinking if its a CPO, then you want the dealer to know so you won't be responsible for an otherwise warranty issue.

late_bloomer

As merc63 stated, limiter on dyno would be a safe and fairly cheap ~$100

MichaelKestner

I'm basically asking if there are any visual indicators (display options, broken ecu harness clips, etc..) that would indicate a tune had been done. I plan to run it down the track eventually, but I want to have a dealer check it out first. I don't want them to stumble on a pre-existing tune and void the remaining warranty.

cyberorth

Prior to the handheld tune option, the ecu had to be pried open and glued back. There is no sign of a tune if done through odbii.

bluejae

if you don't plan to tune it, then i guess going to the dealer and asking them would be fine...