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Discussion Starter #1
Not that it's important, or that hooliganism like this would be condoned by me or anyone else, but what are the speed limiters set to on our cars? By experience, I can tell you my manual '06 G5 base cuts out at 105mph, (just a touch shy of 170kph for my fellow metric mates) and I assume the LS/LTs with L61 would be a similar story. Any faster with the stock 'loosey-goosey' suspension and the car would feel so disconnected and unstable that the whole thing would lift off and do a backwards somersault with nasty results. That's how it feels as a driver anyways. What about the 2.4, SC and TC? And can the governor be removed without a tune? Maybe pulling a fuse or wire somewhere? What's it like at the limit with these cars? Would love to know, also I apologize for glorifying street racing, I'm just a little too curious for my own good.
 

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Levee
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Limit of the sc and tc is 155mph. Limit of the sport is 135mph.

From personal experience, even with my lowering springs, 170mph in my ss (yes i tuned it) was quite scary. Seemed to float quite a bit.

As far as the govenor, no, it can only be changed or removed by a tune.
 

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Levee
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My evo is topping out at 185 now lol. New trans with different gears will put me over 200 easily :)
 

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From personal experience, 170mph in my ss was quite scary.
I think you're stretching it a bit. Won't believe you unless you show me the speeding ticket.
 

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Gear ratio is why....you might get there faster but you ain't going to go much faster.
 

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Limit of the sc and tc is 155mph. Limit of the sport is 135mph.

From personal experience, even with my lowering springs, 170mph in my ss (yes i tuned it) was quite scary. Seemed to float quite a bit.

As far as the govenor, no, it can only be changed or removed by a tune.
whew, 170, only did about 158(GPS, speedo was at 160 mark) in my SS before I got out of it due to running out of good enough road.

Any balt non sport/ss should able to do 120-30. Big factor is having the right rated tires thats why some hit 105 or so and "stall" out, my LS only did 105 cause of the stock continentals on it.
 

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Had the Speedo pinned on mine once, definitely kept going. Speedo maxed at 140. Tires make all the difference.

Sent from AutoGuide.com Free App
 

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my post makes it seem like all you have to do is switch tires lol. Not the case, just stating most tires from factory are not rated too high, hence the computer governed limiter so you do not go down the road at a dumb speed and the tires explode. I know many know this but just clarifying for whomever comes in and and does not.
 

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Levee
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I think you're stretching it a bit. Won't believe you unless you show me the speeding ticket.
2 things. 1. Who said I got caught lol. 2. After 155mph a police officer in the states is not legally able to pursue you. (dad is a retired cop so I know) :).

Police crown vics top out at 136mph and the chargers top out at 155mph. Some states have interceptors that can reach upwards of 200mph, but are only legally able to do so in a non populated area.
 

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Didn't answer how you got 170 without changing the differential.
 

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Levee
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Didn't answer how you got 170 without changing the differential.
Differential is not needed changed to hit 170. Just a tune and a raised rpm limit, however the stock turbo won't push the car past 163. But I wasn't running the stock turbo. :)
 

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Discussion Starter #17
Jeeze, I thought 105 in my stock LT was fast. I can't imagine 170 :blink:
Ditto.

I'm sure tires have alot to do with the factory set limit. I've got 195/60/R15 Toyo Extensa A/S and they're only rated until 190kph, definatley not sport tires by any stretch of the word, but not so bad at offroading apparently lol.

Also, stability is greatly compromised past 100mph for cars with the base suspension, so maybe GM didn't want their young Cobalt/G5 buyers pushing their luck too far...
 

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