High Alt. First Time With EVO
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From: COLORADO
Originally Posted by SiCKlEyWiKeD
what's the altitude there? And that sucks you guys have to wear helmets. You only have to wear one @ Las Vegas Motor Speedway when you run low 11's
Originally Posted by tinytiim
5800ft ASL 1.098 miles high, If you were to believe in correction factors (which I don't) I basically would have run a 12.2 at sea level.
Those calculators are never right for AWD cars. I put down 300awhp MAX up here on MAC's Dynojet with max boost, alky, a custom flash, and even some fine tuning on my SAFC. With that 300whp, I did my 12.30 and 109+ trap speeds.
For reference, my max trap speed at Bandi is 109.2. I went to PMI last week (~4800') and hit 112mph on my first run, but all the rest were right around 109.5-109.6mph. I think the 112 was a fluke, but it's hard to say. It was on a full-spin launch en route to a 1.85 60', so the ET wasn't good (12.41). All of my runs at PMI were 12.4x, but my mph was about half a point higher on average.
For reference, my max trap speed at Bandi is 109.2. I went to PMI last week (~4800') and hit 112mph on my first run, but all the rest were right around 109.5-109.6mph. I think the 112 was a fluke, but it's hard to say. It was on a full-spin launch en route to a 1.85 60', so the ET wasn't good (12.41). All of my runs at PMI were 12.4x, but my mph was about half a point higher on average.
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From: COLORADO
Originally Posted by Warrtalon
Those calculators are never right for AWD cars. I put down 300awhp MAX up here on MAC's Dynojet with max boost, alky, a custom flash, and even some fine tuning on my SAFC. With that 300whp, I did my 12.30 and 109+ trap speeds.
For reference, my max trap speed at Bandi is 109.2. I went to PMI last week (~4800') and hit 112mph on my first run, but all the rest were right around 109.5-109.6mph. I think the 112 was a fluke, but it's hard to say. It was on a full-spin launch en route to a 1.85 60', so the ET wasn't good (12.41). All of my runs at PMI were 12.4x, but my mph was about half a point higher on average.
For reference, my max trap speed at Bandi is 109.2. I went to PMI last week (~4800') and hit 112mph on my first run, but all the rest were right around 109.5-109.6mph. I think the 112 was a fluke, but it's hard to say. It was on a full-spin launch en route to a 1.85 60', so the ET wasn't good (12.41). All of my runs at PMI were 12.4x, but my mph was about half a point higher on average.
I would like to see what the traps would have been sans the heavy headwinds. I really wanted to see where the car was 100% on the street. I know there are considerably faster times to be had with race gas and yanking the spare tire, mats, and other excess weight.
I actually am a bit scared to go back to the track. I have managed to stay away for over 2 years. I just think of all of the money and broken parts I have left at that track, and get a little paranoid. It is kind of like an alcoholic just taking one more sip after years of sobriety....and you want more...and more....and more.....
My fastest time ever there is 11.97@124 in my 1951 Chevy, which is basically in pieces in my garage. I think the Evo is great where it is and it is time to get my first car on the road again.
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From: Colorado
Originally Posted by lancealott
Based on my dyno log at CarzImports, the correction factor up here is around 1.23%~ .
I've had my car on a dyno in Denver and at sea level in Philly and there was around a 15% difference. However, it's difficult to come to any type of conclusion based upon this since we're talking about two different dynos.
The biggest difference that I noticed was max boost and spool time. My turbo spooled much quicker at sea level and made more boost then it did at altitude. It's safe to say that running at altitude has more disadvantages then just peak HP. There's really no perfect correction factor that takes everthing into account. The NHRA correction factors look to be the best guesstimate that I've seen.
You can't really use a conversion on altititude for turbo cars, the effects are more significant as boost goes up due to air density, avial O2, etc. I think a larger turbo is the best altitude remedy
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From: COLORADO
Originally Posted by C6C6CH3vo
You can't really use a conversion on altititude for turbo cars, the effects are more significant as boost goes up due to air density, avial O2, etc. I think a larger turbo is the best altitude remedy
Relatively speaking turbo cars are MUCH faster than N/A up here. We rule the roost for street cars around here. My friend Ronnie runs a ZO6 with headers, exhaust, cams, and intake, and runs mid 13's with slicks.
There is no solution to altitude, it is just hard to explain to lowlanders that you are darn proud of runnung a 13.2 and were the one of the fastest true street cars at the track.
As a matter of fact, There was a TT 350Z that was running low 13's, and a juiced ZO6 in the 12's, other than that, only bikes and trailer queens were faster and this is out of 200-300 cars.
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From: Inland Empire (Running Springs)
I live at 6100 in the so cal mountains and I would say I lose 3-4 pounds of boost on the pump gas map at that altitude. I hit peak boost according to the zeitronix most often in the 18's range at 6000, where as on flat land 700ft I hit mid 22 pounds. No doubt the altitude effects times. It sure makes it hard for you to compare times to some of the fast tracks out there.
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From: Colorado
Originally Posted by C6C6CH3vo
You can't really use a conversion on altititude for turbo cars, the effects are more significant as boost goes up due to air density, avial O2, etc. I think a larger turbo is the best altitude remedy