Does my 06 V have a top-speed governor?
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  • 1 Post By mberisha
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2004-2007 Cadillac CTS-V General Discussion Discussion, Does my 06 V have a top-speed governor? in Cadillac CTS-V Series Forum - 2004 - 2007; So I'm headed back to Mainz today on the A63, and the road opens up. I get into the left ...
  1. #1
    mstrjon32 is offline Cadillac Owners Enthusiast
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    Does my 06 V have a top-speed governor?

    So I'm headed back to Mainz today on the A63, and the road opens up. I get into the left lane and punch it in 5th, and at what read 149 on the speedometer, with the car still pulling hard, I felt a fuel cut-off. I had hit a GPS-confirmed 153 earlier in the week, with my foot hard down in 6th before I had to brake (because you know, a car a mile ahead of me pulled out)...but I'm wondering if I in fact hit a limiter then too and just didn't notice it.

    I'm not making a habit of driving 150+ (it's exhausting) but I kind of wanted to run this car out to it's max on roads where it's legal to do so. I've seen plenty of confirmation on the web that these cars will do 163 in 5th gear, so why am I hitting this limiter? Did my car come with lower-speed rated tires? How much of a pain is it going to be to get the limiter removed?

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  3. #2
    mberisha is offline Cadillac Owners Connoisseur
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    Re: Does my 06 V have a top-speed governor?

    Hahah....did you have to fill up AGAIN on the way home cruising that fast? I got 185 miles to the last tank on the trip back from Hooters.....

  4. #3
    Aurora40's Avatar
    Aurora40 is offline Cadillac Owners Enthusiast
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    Re: Does my 06 V have a top-speed governor?

    The RS-A tires are V-rated. They were the standard tire in '06 (I believe). So the car likely has a V-appropriate speed limiter.

  5. #4
    InfrareV is offline Cadillac Owners Member
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    Re: Does my 06 V have a top-speed governor?

    My impression was the 18" RS-A's had a "W" rating.

  6. #5
    mstrjon32 is offline Cadillac Owners Enthusiast
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    Re: Does my 06 V have a top-speed governor?

    Met: Ha, nope, but I'm back down to a half a tank. The car is going to be parked for a few days while my wallet recovers. Driving 150 did help the hangover, though...

    Aurora40: So you're telling me that the 04 and 05 had a better tire stock? That's pretty annoying. I have W rated tires on the car now, and I want to use them.

    Am I going to have to buy an (read: use this as an excuse to) HPtuner to get the limiter off? I don't know where else I could take this car in Germany to get PCM work done...

  7. #6
    kevm14 is offline Cadillac Owners Connoisseur
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    Re: Does my 06 V have a top-speed governor?

    According to what I'm seeing, the RS-A in 245/45-18 is a V-rated tire, and V-rated is 149mph. Sounds like we have a winner. If there is a W-rated RS-A I didn't see it on Tirerack.

    And yeah, the 04s and 05s came standard with the Eagle F1 summer tires. Owners hemmed and hawed over tire life, and so 06s and 07s were blessed with RS-As standard, with the F1s optional.

  8. #7
    vcaddy06's Avatar
    vcaddy06 is offline Cadillac Owners Fanatic
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    Top speed

    So I got the opportunity to go for a top speed run in my LS2 V last night. Pulled strong all the way till 149mph and wouldn't go anymore. I thought these cars topped out at 163? Exhaust, CAI, and tuned. Thoughts?

  9. #8
    darkman's Avatar
    darkman is offline Cadillac Owners Master
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    Re: Top speed

    The post-2005 models are speed limited because GM went to lower speed tires. (A tuner can change this.)

  10. #9
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    vcaddy06 is offline Cadillac Owners Fanatic
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    Quote Originally Posted by darkman
    The post-2005 models are speed limited because GM went to lower speed tires. (A tuner can change this.)
    Ahhh, I see now. But I had the car dyno tuned already. I believe he was supposed to take all restrictions off. Atleast I'm pretty sure he was supposed to. I guess he didn't. Thanks darkman.

  11. #10
    mberisha is offline Cadillac Owners Connoisseur
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    Re: Top speed

    mstrjon32 likes this.

  12. #11
    mstrjon32 is offline Cadillac Owners Enthusiast
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    Re: Top speed

    I've since had the speed limiter removed from mine, but I've only hit 163 once.

  13. #12
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    vcaddy06 is offline Cadillac Owners Fanatic
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    Quote Originally Posted by mstrjon32
    I've since had the speed limiter removed from mine, but I've only hit 163 once.
    Well I'm gonna be taking it back to get retuned and remove the limiter that I thought was being removed. Does it top out at 163 due to redline?

  14. #13
    mstrjon32 is offline Cadillac Owners Enthusiast
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    Re: Top speed

    Quote Originally Posted by vcaddy06 View Post
    Well I'm gonna be taking it back to get retuned and remove the limiter that I thought was being removed. Does it top out at 163 due to redline?
    That's right. You're out of gear in 5th at 163, and there isn't enough power to keep pulling in 6th.

  15. #14
    07cadv's Avatar
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    Re: Top speed

    Man, I miss Germany.....going everywhere with your hair on fire.
    mstrjon32 likes this.

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