08-22-2013, 09:32 AM
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#1 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: Chicago
Posts: 3,658
Drives: 370
Rep Power: 954590
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Quote:
Originally Posted by TopgunZ
So why is it that to reach my uncorrected 400 hp I needed 11psi where guys in cali and such are doing it off 7?
And if your car is running 11's at sea level and u brought it to bandimere at 6000ft you would run 12's.
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You need to give me more details, this information is way too vague to begin to analyze. You may be comparing to the highest HP/quickest ET of them all at sea level and assuming you would do as well? Well I'm in Chicago and my 370z didn't run a 12.9 bone stock like another guy did somewhere else - altitude isn't everything.
Again, you do get a loss from altitude, but you do not get as much as a loss as SAE will wrongly tell you. The SAE, literally says, that their own correction factor for altitude cannot be applied to boosted engine. You can literally find endless discussion about this. SAE in Denver on a turbocharged vehicle will always produce grossly inflated numbers... It was predicted by the SAE, and it was proven by the tuning/racing industry.
Anyway, your altitude would suggest that it would take at least 2.6 psi more boost to make the same uncorrected power as at sea level on a turbo vehicle. Probably a little more due to reduced intercooler efficiency.
Last edited by phunk; 08-22-2013 at 09:35 AM.
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