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Old 01-20-2007, 12:36 PM   #1
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Default Gearing limited top speed for 05 STi?

I have searched for this on here and Google with no results. I am wanting to know what speed an 05 Sti would do at 7000 rpm in 6th with the stock wheel and tire setup. (Obviously speed governor removed.) Also, what RPM are you at when you hit the speed governor? Thanks


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Old 01-20-2007, 12:55 PM   #2
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Should be ~176mph.
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Old 01-20-2007, 12:58 PM   #3
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I am not saying it is a good idea to go that fast but has anyone on here actually hit redline in 6th.
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Old 01-20-2007, 03:38 PM   #4
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Out in the midwest through New Mexico my 05STI was at 6800-6900rpm on the stock tach. We were GPS'd on our boost phones at 168mph but was probably right at 170mph as it doesn't get updated every second.

This was also with 3 people in the car including myself.
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Old 01-20-2007, 04:17 PM   #5
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Quote:
Originally Posted by bgod
Out in the midwest through New Mexico my 05STI was at 6800-6900rpm on the stock tach. We were GPS'd on our boost phones at 168mph but was probably right at 170mph as it doesn't get updated every second.

This was also with 3 people in the car including myself.
Your EGT must be running really hot at the speed for a longe period of time.
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Old 01-20-2007, 04:30 PM   #6
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Quote:
Originally Posted by bgod
Out in the midwest through New Mexico my 05STI was at 6800-6900rpm on the stock tach. We were GPS'd on our boost phones at 168mph but was probably right at 170mph as it doesn't get updated every second.

This was also with 3 people in the car including myself.
How much HP do you put down? Is that possible with a AP and Turboback?
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Old 01-20-2007, 05:04 PM   #7
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On that run I was with my stock tmic, AP protuned to 319whp, 20gtdo58cm.

With an AP and turboback, not sure. I don't see why not as I was still pulling slightly.
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Old 01-20-2007, 09:54 PM   #8
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So it takes 360/370 (your sig power) to go 170?
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Old 01-20-2007, 10:20 PM   #9
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Quote:
Originally Posted by mxpop
So it takes 360/370 (your sig power) to go 170?

Nope as my post stated above I was at 319whp during that run.
I would think the a well tuned stage 2 set-up should have no problems getting up to that speed, probably just a tad bit slower then having an upgraded turbo.
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Old 01-21-2007, 12:10 PM   #10
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Quote:
Originally Posted by mxpop
So it takes 360/370 (your sig power) to go 170?

Once I get my AP next week, I'll see what I top out at on the autobahn. In a few more weeks I'll go to stage 2 and do the same run. It certainly doesn't take long to hit the limiter stock, that's for sure. I'll video it too.

I was just reading the aero thread in the nasioc motorsports forum and there is a chart that estimates HP and top speed in an STi....don't remember what was needed for 170 mph.

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Old 01-21-2007, 01:17 PM   #11
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I achieved 172.9 in the standing mile during the www.texasmile.com event. I was making 426awhp on a dyno-dynamic with pump gas and alk injection. When I went througn the timing lights, my tach showed 7.1-7.2k. When you figure gearing and redline, your supposed to be able to attain 176, as mentioned above.
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Old 01-21-2007, 01:25 PM   #12
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Quote:
Originally Posted by ToddStratton
Once I get my AP next week, I'll see what I top out at on the autobahn. In a few more weeks I'll go to stage 2 and do the same run. It certainly doesn't take long to hit the limiter stock, that's for sure. I'll video it too.

I was just reading the aero thread in the nasioc motorsports forum and there is a chart that estimates HP and top speed in an STi....don't remember what was needed for 170 mph.

Todd
So you're only mod will be the AP? I'd like to see what the outcome will be as I was also wondering what a stock STi (with only the AP to remove the governor) could do in terms of top speed.
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Old 01-21-2007, 02:26 PM   #13
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Quote:
Originally Posted by ilovecarbs
So you're only mod will be the AP? I'd like to see what the outcome will be as I was also wondering what a stock STi (with only the AP to remove the governor) could do in terms of top speed.
I did just put a cat-back on...but that is pretty minor.

Todd
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Old 01-21-2007, 06:40 PM   #14
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170 sounds acurate, can anyone figure out what mph in 6th I could hit at 8500 rpm on the 06 sti gearing.
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Old 01-23-2007, 04:47 AM   #15
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I was at a little over 6800 rpm's when i did that (see avatar.) About 3/4 inch past the 160 mark. That was really fast, lol.


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