confused
#1
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Join Date: Jan 2004
Location: orlando, fl
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Car: 1991 z28
Engine: 5.7
Transmission: 700r4
confused
hey guys I'm a lil frustrated I just put Nitto 555r's and ram air boxes on my 91 Z 350 and for some reason even after launching at 1500 with no tire spin my car runs what it ran back in december (14.2) same 60 ft (2.09) but a 9.01 1/8th time (2 tenths faster than december. Grant it it was 90 degrees 100 percent humidity and in december is was 50 with 0 percent humidity. I dont know is wether that much of a difference? I do get the service engine light sometimes wehn cruising at a steady rpm could it be a sensor? Im confused.
#2
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Join Date: Sep 2003
Location: Indianapolis, IN
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Car: 87 Firebird Formula
Engine: 305 LG4
Transmission: Auto
It can...
WARNING: YMMV
http://www.staginglight.com/guide/weather.html
By this guys estimates you should have ran a 14.53 based on the conditions you described. So you "gained" about .33 seconds with your mods. The real test to see if you ET improves will be when conditions are better.
WARNING: YMMV
http://www.staginglight.com/guide/weather.html
In short, heat slows you down, humidity slows you down, and dense air pressure helps speed you up. After a year of record keeping with the gauges, I have come up with the following simple rule that works for my car:
--------------------------------------------------------------------------------
Temp goes up 3 degrees, ET slows .01 seconds
Barometer goes down .01-.02, ET slows .01 seconds
Humidity goes up 5%, ET slows .01 seconds
--------------------------------------------------------------------------------
Temp goes up 3 degrees, ET slows .01 seconds
Barometer goes down .01-.02, ET slows .01 seconds
Humidity goes up 5%, ET slows .01 seconds
Last edited by Keith_Indy; 06-17-2004 at 09:14 AM.
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