If you're in Vegas then you're at about 2,000' ASL so you could have less horsepower then someone at sea level. I know there is a huge difference between Salt Lake and Vegas inpower and that's only a couple thousand feet.

 

The PCM is limited to 158 mph.

 

Well my speedo was right at 160mph so I was within the 1-2mph error of a 158mph limiter.

 

I am sure it is not a horsepower issue, my car pulls hard up to 140mph in 4th or 5th gear. If it was lack of horsepower the topend in each gear would be a little differant. My car is computer limited from the factory at 140mph. I am pretty sure that Car and Driver's review even says that the Cobalt ss they tested is limited @141mph. I did not opt for the LSD with recaro seats when I bought my car so mabey the ones with the LSD are goverened a little higer, but I doubt it. Belive me I know my **** when it comes to GM's. I was in the GM ASEP program a few years back, and have several ASE certifications.

 

G85 has nothing to do with programming, I have pictures on here of 145mph and 150mph 100% bone stock.

 

true Darksun hit 160 and bounced off the limiter in 5th twice when doing it

 

^^^ but then again he had a 3'' pulley i believe but still^^^^

 

EX-*******-ACTLY! The PCM is limited at 158. But there is this thing called AIR and it prevents you from actually hitting that speed. It doesnt matter if your speedometer says your going 155. Speedometers are off 90% of the time from the factory. Mine says im going 29 when I am going 30. Imagine what it would do at 140...

Also EVERY car is limited to a speed from the factory. Z rated tires, I believe, are rated at like 189 MPH or something close to that.

States do not limit how fast a car can go because of the fact that car doesnt have a set destination. Also the cars can be used on closed courses and there is no limitation to what you can do there. The law can only control what the cars are supposed to do on the road in public places. If they controlled it all, the cars would all be governed at whatever the highest speed limit is in the country. lol imagine the gearing on the 6-speed corvette that is only allowed to go 65 MPH in Illinois! haha

 

actually ours are rated to 168 mph

 

The gearing woudl be the same it is now. Just the governer would kick in at 65. The t-56 is a tall geared mother for high output motors. SO they can get around 25+ mpg while spinning aroudn 14-1500 RPM at highway speeds. Also exhaust noise isnt' that bad at those engine speeds. I couldn't see a Vette buzzing along at 6 grand getting 14mpg and people buying them. The car would be unstreetable due to noise ordanaces being broken.

 

You argue alot and your often wrong. Quit while your ahead

 

I wonder how he pulled that off? Given enough power, (and removal of the speed limiter) the car is geared to hit 169 at 6500 rpm in 5th.

 

I am not calling anyone liars here, but I promise you my car hits its govener @ 140 every time. Give me to this weekend and I will post a video of me hiting 140 in 4th and 5th gear and then you all can be the judge.

 

please let me know where I am wrong...... I dont admit to knowing everything. If I am incorrect, feel free to correct me. I would rather not go around with false information in my hands. But to the best of my knowledgem everythig I said was correct.

Also today ony my way home I maxed out 4th gear at 130 with my stock PCM. Didnt go into 5th as it was dark and didnt want some coyote running out in front of me and making pureed coyote....

 

i was saying if they geared it to max at 65...

 

What mods you got that are letting you get to 140 in 4th? Even with stage 2 you have to shift to 5th before 140.

 

i have no idea why you car wouldnt go any faster than 140. may be glich in the computer im not sure. i remember reading in a magazine a long time ago they tested a stock celica gts that had a factory glitch putting the redline at like 6900rpm or something. mine hit 140 and kept going no problem. like i said i didnt slow till 150 and it seemed like forever to hit get that extra 5mph. i didnt have the space to wait to see if it would go any faster.

 

well im not gonna keep it to myself, so...way to risk the lives of yourself and others...you get a gold star

 

thanks...is there a way you can make that into a banner so i can put it in my signature?

 

Well I was on a empty country road with open sight and no stops for 9 miles..... and i only went 130

 

I'm getting a custom tune and I'm gonna see if I can bump the limiter up to like 400 or something Then I will know if I have enough gearing and power I could hit 400 mph. Or mabey bump the limiter up to 253 like the Bugatti Veyron!

 

Not really, depends on the car itself. Not all cars are the same outta the factory, with stage 2 i have to shift to fifth at 143

 

I was just going to say that, with Stage 2 4th gear pulls and lasts forever.

Also most GM ECM units are programmable to a max speed limiter of 255mph, that should take care of anyones needs.

And chipmonk212121 get off the whole speedo error **** allready, your wrong.

 

Me at 230 its starts to slow down. Ive only got it to 250.

 

Wha? 255mph is alot.