I hear ya...

I doubt it... I can usually hit 100 on the entrance ramp... hell today I wrapped it to 145 with my BIL.

Not true... I've done it MANY times on my sportbikes. They usually grossly under estimate the speed. I use to wave at the cops at 140. Further, with the new digital transition, many cities run different "frequencies".

But can't that get programmed out with Trifecta?

 

A tune can program out your top speed limiter, but it all comes down to trans gearing, fuel injectors and fuel pump. I learned my GTOs injectors/pump cant keep up past around 168mph, even though I still had plenty of gear left.

As a sidenote, I've gotten the SS up to the 125-129ish range and I let off because it stopped feeling stable. My nearly 4000lb GTO stops feeling stable and getting very light in the front end at around 165, I can't imagine how a slab sided car at 700lbs lighter would feel at that speed. Let alone the fact that all the weight is being transferred off the drive wheels. I honestly wouldn't trust the SS at anything over 155 anyway.

And here was the GTO on it's way to that top speed:

 

not really interested in how fast you can go.....but very interested in how quick you can get those speeds -

 

http://www.texasmile.net/

Automobile Street Legal Wagon Under 190 mph Single Turbo 4 Cylinders 93.00 to 122.99 cid / 1.524 to 2.015 L Gasoline NO Nitrous Methanol Injected Front Wheel Drive 2008 Chevrolet HHR - SS Sport Wagon 4D Black 3 3/25/11 10:08:00 AM 143.4 MPH 3/25/11 11:46:27 AM 143.5 MPH 3/25/11 2:14:18 PM 141.7 MPH 3/25/11 3:19:53 PM 141.8 MPH 3/25/11 5:28:41 PM 141.5 MPH 3/25/11 5:48:40 PM 139.6 MPH 3/26/11 9:29:39 AM 142.7 MPH 3/26/11 1:22:25 PM 142.8 MPH 3/26/11 6:23:50 PM 141.4 MPH 3/26/11 7:28:27 PM 140.8 MPH 3/27/11 9:36:34 AM 142.7 MPH 3/27/11 10:49:06 AM 142.4 MPH

 

A forum for hhrs that loves talking about speed...

 

NO you're not dreaming.

 

Had mine at 140mph a few days back. Had quite a head wind...to the point it was making my antenna start smacking the sun roof; so I let off. It looked like I was in the high 5k rpm range, so it had a little room left, but not a ton.

On the way home from the dealer I pegged it past 140 for a few seconds I'm pretty sure...but I was going 140+ in a car I had just bought...so I was more concerned with making sure I didn't hit anything than I was with the speedo's exact location.

I have the GMS1 and a 5spd, in case anyone wanted to know. No other mods that I'm aware of performance wise.

 

MAN I love this car, We only had one other high performance car (90 SHO) and thing makes me smile more than anything ever did.

 

I've been over 130 MPH in mine.
It had plenty left when I had to shut down.

I remember reading here or in an online review that HHR's are aerodynamically limited to ~155 MPH - YSMV

 

I'd say they are plenty fast with stg1. I haven't been late cause my car was so slow since I got it. Going to do Trifecta just for more!