Acey

iTrader: (3)

Stock LSJ limiter is 158, LNF is 155. As Bika mentioned above, there's a bunch of things that could stop you from getting there, not the least of which is our horrible inaccurate speedometers.

EatonTVS07

iTrader: (4)

Do you have any monitoring gauges other then boost?

Stiner

More than likely heatsoak. i did two back to back speed runs before on the first one I got up to 220km/h and thought I saw something so I slowed down then I went again and it wouldnt go any faster than 250km/h. This was on Stage 3 with no cooling mods

blake05SS

no i dont have anyother gauges i want to get some but i dont have the cash i dont have hp tuners either

ebristol

iTrader: (4)

What size tires are you running? If you have bigger then stock tires and have not had your PCM recalibrated it can effect your speedo 15mph at 155.

megaman311

Dude that sucks! With just bolt ons, I hit 144MPH before I did the stage 2

ItalianJoe1

iTrader: (10)

I never went over 150mph, there's no point.

If you think your car is down on power, take it to a dyno. Doing top-speed runs is a retarded way to figure out if the car is 'normal', far too many variables to take into account.

SunburstSS

iTrader: (48)

Hmmm now that you mentions it i gotta try it and i'll letcha know...

edmbaltss

only 185 kph i hit 250kph or 155mph could have gone faster but thats as far as i pushed it and thats the last time

Laser Target

ya 140 seems low something must be limiting it...

startingline05

iTrader: (3)

i borrowed my grandmas garmin gps for a road trip, now if you go into the history her top speed says 156 cant wait till someone checks it one day

Omega1x

I would really like to figure out what is limiting the top end speed of my car. If the limiter is at 158, why does it suddenly fall on its face at 140? Like i mentioned before, it's got plenty of power after 130, but as soon as it hits 140, it just stops dead and will not climb any higher.

Chevycobaltss3

iTrader: (2)

Nothing against Ottp tunes bit alot of people have issues with them. They could have lowered your speed limiter. I raced a 350whp sti in a warhoise district closed off and I was at 155 mph and about 5 cars ahead of the sti and I had to stop and my car was still pulling like a bi@."... Check ure ic pump to see if it's working you could be heatsoaking

Laser Target

Hahaha

06SS ALL DAY

shoulda went zzp

doubledamageXX

your octaine could be limiting as well... 93 is prefered to hit speeds like that

myfakeevo

your fat. go on a diet fatty.

sput

iTrader: (3)

Who cares? Seriously. That's too damn fast in these cars. Death wish?

Chevycobaltss3

iTrader: (2)

Speed is somthing your addicted to, jsut be smart about it. DONT STREET RACE AND BE STUPID IF YOU RACE DO IT ON A CLOSED ROAD, (pERSONAL) OR A TRACK OR A WARHOUSE DISTRICT THAT THE OWER APPROVES OF

Cobalt_Daddy

i saw 143mph no problem and was still climbing when i had to back off because of a blind hill.

NathanSS

Maybe its a computer issue relating to GM? I raced my dads LS2 SSR against my brothers 05 Saleen S281 (btw dead even race) and after our first run, it dropped power by at least half... I couldnt hide that by dad... But anywho, he took it to the dealer and they said the computer in it recognized different driving conditions and went strict on everything by cutting fuel and air... till the dealer could flip it back. So maybe your comp did something? Idk... far fetch i know but possible.

I had my old SVT Focus to 145 a few times... but after like the 20th time I blew it at 135 going up a hill... Valve spring split, dropped valve into chamber and destroyed everything inside. Also... the couldnt find the valve any more haha 7300rpms had its way with it. Luckily... SVT said it still shouldnt have done that and replaced the engine for just my diagnostic fee/deductible... $100 for a new Forged engine ....
....then I sold it to a girl and she wrecked it... But anywho!
weird situation.

I'd put my money on wind. Its such a huge factor.

insylem

I agree with this guy

rnjmur

I am sure the problem is tune related. Could very well be COT settings or heatsoak. Those would be my two guesses.

QuickSilver_SS

All i have is GM stage 2 really.... And i have hit over 150mph as well. If i had to guess id say almost 155mph a few different times.

ULWizSS

iTrader: (5)

Also GM Stage 2 here and hit 143 in 4th. Was in 5th for a second or so and i was still pulling. Dont see a need to hit those kind of speeds but wanted to see what mine could do since i had it for all of three days.