10-24-2009, 05:14 PM | #15 |
Drives: em crazy. Join Date: May 2009
Location: Right here
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11-11-2014, 10:40 PM | #16 |
Summer
Drives: 2010 2SS/RS IOM w/ Black Stripes Join Date: May 2009
Location: San Angelo, Texas
Posts: 423
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I just moved from Germany(1.5kft) to Arizona(4.6k) and noticed less ummph. Was hoping I could mod the ECU to compensate until I read this :(
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CAI intake, Rotofab W/W Reservoir, Hurst Shifter, Skip-Shift Eliminator
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11-12-2014, 01:24 AM | #17 |
Drives: 2013 A6 GT 5.0 Join Date: Nov 2009
Location: Edmond, OK
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I wouldn't be surprised if there was a 100HP difference between 10,000 ft and sea level.
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BLK/BLK 1SS/RS Ordered 11-01-2009 Took delivery 12-22-2009. Heads/cam/converter/bolt ons. SOLD Feb 2015 to fund 6th gen LT1 SS with 8L90E.
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11-12-2014, 06:43 AM | #18 |
Dyno Show Queen LOL
Drives: 16 SS & 17 ZL1 Both Yellow Join Date: Jan 2014
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Watch pikes peak fast n Loud!
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11-14-2014, 11:45 AM | #19 |
Drives: 2011 2SS w/RS PKG Join Date: Sep 2010
Location: Hawaii
Posts: 140
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You know what sucks even more 91 piss water and elevation!!! I felt the difference coming from Tx to AZ. I also felt the difference in my EVO VIII. Going from Killeen, TX to AZ altitude and 91 piss gas, there was a 20% drop in WHP in my EVO. I could only imagine what the loss is on a NA engine as our LS3/99s.
Anyone have a dyno difference of at sea level and 4k plus? |
11-14-2014, 11:59 AM | #20 |
Drives: Chevys at the limit Join Date: Nov 2010
Location: SLC, UT
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Here in SLC, we're at 4500 ft actual with the D/A being 7500+ most days. Generally our 1/4 mile times in a 100% stock car are almost a full second slower than at sea level.
Best regards, Tyler 888-308-6007 |
11-14-2014, 11:59 AM | #21 | |
145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
Location: Conshohocken, PA
Posts: 1,146
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Quote:
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11-14-2014, 12:05 PM | #22 | |
Drives: 14 Camaro 1LE,328i, and some Hondas Join Date: May 2014
Location: Virginia
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Quote:
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11-17-2014, 10:46 AM | #23 | |
Drives: 2011 2SS w/RS PKG Join Date: Sep 2010
Location: Hawaii
Posts: 140
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Quote:
I do agree with the purpose of octane being a detonation retarder, because when you have detonation, the knock is likely to be present. But, if a tuner is advancaing timing and increasing fuel for more power, while keeping the knock in check, then higher octane is needed. But, that is a different subject. I was just letting the OP know what sucks even more about elevation is, when you are used to sea level WHP versus higher altitude WHP. Going from 354 AWDHP, and 375 TQ with 93 Octane at sea level and then going to 4k+ elevation with 91 Octane, really made a difference to dyno at 300/300 AWDHP on a 2.0l with a turbo. |
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11-17-2014, 10:50 AM | #24 |
Drives: 2011 2SS w/RS PKG Join Date: Sep 2010
Location: Hawaii
Posts: 140
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I feel you man!! Even on Forced Induction the difference is there. To make things worse, 91 Octane fuel, which also kinda sucks.
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11-17-2014, 11:18 AM | #25 | |
145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
Location: Conshohocken, PA
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Quote:
You went to your tuner and then advanced timing based on running a higher octane and performance increased? No kidding. That is the point of running higher octane fuels. This is what racers do at the track. They have handheld programmers to flash back and forth with tunes. They have their normal 91/93 octane tune, then they go to the track, fill up with race gas, load the high octane tune and up the boost to retard detonation. What happens when you take a stock Camaro SS made to run on 91 octane and put in 100 octane fuel without changing your tune? It'll run better, and maybe worse. Octane is something you want the minimum of.
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11-17-2014, 11:44 AM | #26 | |
Drives: 2011 2SS w/RS PKG Join Date: Sep 2010
Location: Hawaii
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Quote:
The V8 beast is completely stock and untouched, never put anything higher than 93 octane in. My point of the whole thing is, I understand OPs concern about elevation and power loss. And that what sucks even more is lower octance gas and elevation together. I have driven up to 10k ft with the V8 beast and you can feel the difference as you go up with power loss. |
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11-17-2014, 12:54 PM | #27 | |
145lb Powerlifter
Drives: 2013 Camaro 2SS RS LS3 Join Date: Jan 2014
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Quote:
High octane + elevation is BAD. At 10,000 feet, 93 octane is practically race gas. You don't need it, and that's why it isn't available in high elevation areas. It is a waste of money for refiners to pump cars full of octane that doesn't do anything but potentially impair proper engine function.
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11-17-2014, 01:07 PM | #28 |
Drives: 2012 Camaro SS 45th Anniversary Join Date: Sep 2013
Location: Albuquerque
Posts: 963
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welcome to my nightmare! Alb, NM - elev: 5500
my car ran 13.2 @ 111mph sea level corrections would be 12.2 @ 112mph :shakingmyhead:
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