awe25gt Posted March 14, 2005 Share Posted March 14, 2005 Hi everyone. Past few weekends have been fun in my lgt5mt sedan. I live in Colorado and decided to post my results.My cars mods: uppipe(catless), gutted stock dp, elec.boost controller (15 psi), intake slncr removed. 2004 Pontiac GTO 6spd (intake, exhaust) on a roll in 1st to 90mph, I'm 2 car lenghts in front I'm pleasently suprised with my car and continue to like it more everytime I drive it. Link to comment Share on other sites More sharing options...
racerdave Posted March 14, 2005 Share Posted March 14, 2005 Ah, another way to kill quick normally aspirated cars: altitude! Link to comment Share on other sites More sharing options...
awe25gt Posted March 14, 2005 Author Share Posted March 14, 2005 Out of curiousity, how much different would my car feel and how would that race turn out at sea-level? Link to comment Share on other sites More sharing options...
Beanboy Posted March 14, 2005 Share Posted March 14, 2005 Your car would feel just about the same...and the GTO would probably put 4-5 carlengths on you. From a stop, probably 2-3 by 90. 2004 GTOs are running mid to low 13s stock at 104-105 mph. -B -B http://www.standardshift.com Link to comment Share on other sites More sharing options...
awe25gt Posted March 14, 2005 Author Share Posted March 14, 2005 wow, I guess I don't hate the altitude as much now! Link to comment Share on other sites More sharing options...
03Indigo Posted March 14, 2005 Share Posted March 14, 2005 welcome to the colorado turbo club.....I think it is a requirement to have a turbo to live in this state. I have been an owner of turbo vehicles since 1997, I will never go back. Link to comment Share on other sites More sharing options...
awe25gt Posted March 14, 2005 Author Share Posted March 14, 2005 I came from a 2.0l Honda Accord and will never buy another vehichle without a turbo! Link to comment Share on other sites More sharing options...
mjcdriscoll Posted March 14, 2005 Share Posted March 14, 2005 i would be interested in getting together some time to hang out and shoot the $hit if you guys are interested in getting together. i live at lincoln & peoria and would beinterested in seeing what other people are doing to their cars. i am still contemplating what i want to do. Link to comment Share on other sites More sharing options...
Driver72 Posted March 15, 2005 Share Posted March 15, 2005 Yes, altitude and turbos go hand in hand, and those same hands can often beyotch slap NA cars that would usually lay the smack down at lower altitudes. I could tell a couple stories about my GTI 1.8T at 9000 feet too. But one I always refer to is a test a few years back by MotorTrend (I believe). They were testing station wagons. Two of the wagons they had were the BMW 540i Volvo S40 Wagon We're talking 282 hp V8 in the BMW vs. 160 hp 1.9 liter Turbo in the Volvo. They mentioned how the BMW would easily lay it to the Volvo at sea level, but when they went up to 10,000 feet in elevation, they "played" around with the two cars at freeway speeds, and they stated how the little Volvo would hang right on the BMW's bumper all the way up to 120 mph at 10,000 feet. Very nice Link to comment Share on other sites More sharing options...
firedawgs Posted March 15, 2005 Share Posted March 15, 2005 Yes, normally aspirated cars will loose 3.5% per 1000feet of elevation while turbos will not. Updated my vBGarage: Link to comment Share on other sites More sharing options...
Belgarath Posted March 15, 2005 Share Posted March 15, 2005 I've walked on almost every NA car I've raced so far (at 6,000 ft). That includes a WS6 "Ram Air" Firebird. a car that should be an unfair match for a Legacy at sea level. The only NA car that has beaten my OBXT so far: a brand, spanking new C6 Vette. Here's an interesting link to the NHRA altitude correction factors: http://www.nhra.com/tech_specs/altitude.html . Note that "Supercharged and/or turbocharged cars (i.e.: AA/A, AA/AT, BB/A, BB/AT, A/PM and AA/PM) use half factor," i.e. they feel SC/TC cars suffer only half the losses due to altitude. Link to comment Share on other sites More sharing options...
Belgarath Posted March 15, 2005 Share Posted March 15, 2005 Just did some quick calculations based on the NHRA altitude correction factors. I'll use a 2005 Mustang GT as an example: Mustang @ sea level: 13.9@101.4 Mustang @ 5,800 ft.: 15.0@94.1 LGT @ sea level: 14.3@96.2 LGT @ 5,800 ft.: 14.9@92.7 source for sea level data: Road and Track Link to comment Share on other sites More sharing options...
Beanboy Posted March 15, 2005 Share Posted March 15, 2005 Hmm, interesting that superchargers and turbos get the same correction factor. Some superchargers are going to lose a lot more power at altitude than some other superchargers and turbochargers... -B -B http://www.standardshift.com Link to comment Share on other sites More sharing options...
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