C63 AMG (W204) 2008 - 2015
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Any way to tell if my car is tuned?

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Old Sep 2, 2016 | 10:12 AM
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13 C63, 15 Focus ST, 08 Corvette Z06
Any way to tell if my car is tuned?

I just bought a used 2013 C63. It's the first one I've driven, so I don't have any driving feel to compare it do vs a known stock (or modded) one. It has the P31 package, but last night I believe I went over the stock limited 174 MPH, so now I'm wondering if it may have been tuned by the previous owner. Are there any other ways, short of going 180+, that would tell me it's been tuned?
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Old Sep 2, 2016 | 10:13 AM
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Send in your VIN to Eurocharged to see if they've tuned it?
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Old Sep 2, 2016 | 10:21 AM
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Throw it on a dyno and do a 5th gear pull. I think mine went 186 mph on the dyno in 5th. That will let you see how much power you are making too
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Old Sep 2, 2016 | 11:06 AM
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Where the heck we're you able to get up to 174+?? Airstrip event at night?
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Old Sep 2, 2016 | 11:31 AM
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Originally Posted by BEETS
Where the heck we're you able to get up to 174+?? Airstrip event at night?
He must have forgot to put "in Mexico" after the I went 174mph!
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Old Sep 2, 2016 | 12:25 PM
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Congrats on the purchase. Guys chime in here but I think the P31 package wasn't ECU speed limited?
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Old Sep 2, 2016 | 01:14 PM
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Originally Posted by Bigtickets
Congrats on the purchase. Guys chime in here but I think the P31 package wasn't ECU speed limited?
It had a 174 mph electronic limit
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Old Sep 3, 2016 | 03:16 AM
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ask previous owner??
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Old Sep 4, 2016 | 06:12 PM
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Originally Posted by jsbzoh6
I just bought a used 2013 C63. It's the first one I've driven, so I don't have any driving feel to compare it do vs a known stock (or modded) one. It has the P31 package, but last night I believe I went over the stock limited 174 MPH, so now I'm wondering if it may have been tuned by the previous owner. Are there any other ways, short of going 180+, that would tell me it's been tuned?
Originally Posted by BEETS
Where the heck we're you able to get up to 174+?? Airstrip event at night?
not that its impossible, i just want to know the answer to this as well...
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Old Sep 6, 2016 | 10:40 AM
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Sorry for the delay guys, busy weekend. Naturally I just went to Mexico and an abandoned runway . It doesn't take much to get up there and it's a hell of a lot more stable than most cars at speed.

A bit of an update, it turns out it IS limited, just at 180. I guess it's 174 +/-. So tune shopping I go!
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Old Sep 6, 2016 | 09:47 PM
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I think the best bet is to throw it onto a Dyno to find out. If it's not tuned, as least you have a baseline for when you do more mods after!
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Old Sep 6, 2016 | 10:38 PM
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Not that I know a single thing about you beyond your thread here, but you sir seem to probably be the last person who "should" tune a C63! I have a funny suspicion you will find out the top speed of this vehicle while unlimited!
In any event, I wish you and everyone around you well.
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Old Sep 7, 2016 | 12:09 PM
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Originally Posted by Autosport7
Not that I know a single thing about you beyond your thread here, but you sir seem to probably be the last person who "should" tune a C63! I have a funny suspicion you will find out the top speed of this vehicle while unlimited!
In any event, I wish you and everyone around you well.
I certainly don't want to paint a bad image of myself considering how new I am, and I completely see where you're coming from.. especially without knowing me or the conditions for my comments on here. The C63 is my DD and I'm not speed racer around town. I tested the performance under very controlled circumstances. The weekend car is a fully built C6 Z06 (600+rwhp, high 9s on the 1/4,) and I participate in sanctioned racing events so I'm no stranger to high horsepower or car control.
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Old Sep 7, 2016 | 12:12 PM
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Originally Posted by Phil Chow
I think the best bet is to throw it onto a Dyno to find out. If it's not tuned, as least you have a baseline for when you do more mods after!
I'm in kind of a dead zone when it comes to dynos. The nearest one is about 1:30hr away and I work too much to make it during shop hours. That being said, the C63 is something I'm looking to keep mostly stock. I have a bad habit of going crazy on car builds so I'm trying to be good and just drive it.
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Old Sep 7, 2016 | 01:29 PM
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Put it in S+ or M and get up to around 40-50 in 5th. then come off throttle and hit paddle down to 4th and then 3rd. If its a crack/pop sound from exhaust on downshifts then you are possibly tuned.
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Old Sep 7, 2016 | 05:41 PM
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Originally Posted by jsbzoh6
I certainly don't want to paint a bad image of myself considering how new I am, and I completely see where you're coming from.. especially without knowing me or the conditions for my comments on here. The C63 is my DD and I'm not speed racer around town. I tested the performance under very controlled circumstances. The weekend car is a fully built C6 Z06 (600+rwhp, high 9s on the 1/4,) and I participate in sanctioned racing events so I'm no stranger to high horsepower or car control.
Lol I was partially kidding bud.
I get it, if I found an area where I knew I wasn't endangering anyone else, I'd push it! No judgement passed bud.
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