STS Top Speed - Page 3

submariner409 · #31 (**permalink**) 01-19-09, 03:47 PM

Go back and read Posts 4 & 5 to find out what speeds your car WILL really do. Unless Wester's has changed the speed limiter in the PCM, you're stuck, and neither love nor money will buy you any more speed.

ga_etc · #32 (**permalink**) 01-20-09, 06:38 PM

I know that it is dangerous but curiosity gets the best of you sometimes. I have pushed my 99 ETC once to see what the governer is set at. It will do 130mph before the computer kicks in but I'm sure it would do more. It didn't shift out of 3rd until 120. I was also on a long straight road at about 2:30 in the morning that I am familiar with. If you must be stupid at least do it in a safeR location.

ryannel2003 · #33 (**permalink**) 01-20-09, 06:48 PM

I've had mine up to 100 and thats as far as I want. This was on an empty backroads and since my tires are unbalanced, the damn thing wobbles around like no ones business.

kdsevillle · #34 (**permalink**) 01-21-09, 12:46 AM

well mines only an SLS so 112 was my highest. Then I replaced the front struts with Monroe (has no plug in for sensor) so now it's limited to 90! Just as said above by sub, gotta send it in to Wester's to get fixed.

xPosTech · #35 (**permalink**) 01-21-09, 01:20 AM

In 1965 when I was home on leave a girl I used to date had a 64 Impala SS convertible. White in and out. A really great looking car.

It had a six cylinder automatic (on the console between the buckets of course). It was "Daddy bought it" speed limited.

Sheep in wolves' clothing is nothing new.

Ted

Hlod · #36 (**permalink**) 01-29-09, 06:01 AM

I have 98 and 00 STS , both can run easily 150mph (governor) , top speed when governor "slept" is 156mph........ I think that without limiter can go approx 170-175mph
and if I lock 3rd gear than STS go 150mph on it with cca 6900-7000 rpm

Raze · #37 (**permalink**) 01-29-09, 09:07 AM

Quote:

Originally Posted by Hlod

I have 98 and 00 STS , both can run easily 150mph (governor) , top speed when governor "slept" is 156mph........ I think that without limiter can go approx 170-175mph
and if I lock 3rd gear than STS go 150mph on it with cca 6900-7000 rpm

with stock tire size and 3.71 final gear ratio you can do about 170 @ 6400rpm. No offense, but there's no way in hell you're running 7000rpm on the stock engine unless you've removed the limiter, in which case cool, but I wouldn't want a piston aimed at my head shooting through the block/firewall

CadillacSTS2003 · #38 (**permalink**) 01-29-09, 09:27 AM

Quote:

Originally Posted by kdsevillle

well mines only an SLS so 112 was my highest. Then I replaced the front struts with Monroe (has no plug in for sensor) so now it's limited to 90! Just as said above by sub, gotta send it in to Wester's to get fixed.

westers cannot override a diagnostic fault limiting speed...

submariner409 · #39 (**permalink**) 01-29-09, 09:27 AM

Even without the vehicle speed limiter, the car will not do 170: there's not enough engine horsepower or torque on tap, and even less available at the drive wheels. Frontal area and resistance limits the vehicle to 150+ IF, and only IF, it's a Z-car. There are several limiters which come into play, all different. One is vehicle speed, another is engine speed (redline about 6300, tach overshoots slightly at WOT shift). Different limiters for different purposes. And there's always the transmission controls to worry about..........

Hlod, Please post a picture of the tire information sticker which is on the driver's door rear surface. (If you are in western Europe, it will probably be a Z-car.)

S = 112 mph
H = 130 mph
W/Z = no speed limiter. Top speed determined by tune and resistance, above.

...........and Yeah That ^^^. Suspension fault limits are non-removable except by suspension repair with the correct part(s) or by tricking the sensor message.

curtc · #40 (**permalink**) 02-02-09, 01:56 PM

She stopped the fun at 132MPH in my 95 STS and again at 129 in my 01 STS...She had plenty more both times!

kdsevillle · #41 (**permalink**) 02-02-09, 02:42 PM

Thanks for the info STS2003!

PA93STS · #42 (**permalink**) 02-02-09, 04:00 PM

i walked away from a new mustang (had to be a six) on the highway going uphill, around a bend at 100mph. he needed to be taught a lessen

kept weavin in and out of traffic for a couple miles trying to catch up to me i saw him in my rearview. so when the lanes opened up and he was free i stepped on it. poor guy...went out and bought a mustang only to get wiped all over the road by an old mans car from 93 lol! if it was downhill i wouldnt have done it...i only needed to go 100 to beat him. the dangers of going over 100 on public roads are to great. you dont know what pothole or brick or whatever may be aheadof you on a public road. i have only gone 110 in my z rated 93...thats fast enough for me.

a friend of mine was driving on the turnpike a couple months ago going the speed limit. he was on a kawasaki cruising type 1300cc bike...at 65 mph. there was a few 18 wheelers one behind him, two in front of him. he went topass the one in front and didnt see the massive pothole in front of him.. he almost died going 65 mph. was in the trauma unit for 4 weekswith a punctured lung, lacerated liver, 9 broken ribs, and a broken shoulder. this is a guy who has 15+ years experience on a bike. on the street you just never know what is ahead of you... it will always be a risk with your life driving at 100+ mph on the street.

curtc · #43 (**permalink**) 02-03-09, 02:12 AM

there is nothing more satisfying than walking over someone while driving a huge luxury car that weighs almost 5,000 lbs! thank you GM for our Northstar POWER! i've mopped mustangs, camaros, integras, civics, etc. with this baby, i'll never drive anything but Cadillacs, 2 for 2 so far...someday i'll have that STS-V, someday....

ga_etc · #44 (**permalink**) 02-03-09, 04:38 PM

Quote:

Originally Posted by PA93STS

i walked away from a new mustang (had to be a six) on the highway going uphill, around a bend at 100mph,

I've held off a new GT that was a 5 speed in my ETC. I know he had to have been trying to figure out what I'd done to my car to pull that off. The answer is nothing. If there were any mods done to it I'd get in more trouble than I could ever get out of.