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Old 01-08-2008, 06:31 PM   #10 (permalink)
spfan
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Join Date: Jan 2004
Location: Tampa
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Default Re: How to tune a car, step by step.

Quote:
Originally Posted by niterydr View Post
Duty cycle is defined as how many Milliseconds the injector is open for.
bravo. it's good to have all that info in one, very readable, thread.

only thing: i know this is nitpicking, but i just don't want a new guy to tuning reading this and getting confused. but duty cycle is actually the percentage of the time the injector is open in relation to the amount of time it can be open, correct? ie: at 100% duty cycle, the injector is open all the time. at 5% duty cycle, it is open 5% of the time. the rest it is closed. what you defined is actually the pulse width, correct? please correct me if i'm wrong.

but yeah,
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Dyno Collection Thread
1993 Dodge Stealth ES, White, April 2002 - April 2005, SOLD 1 of 53
1993 Dodge Stealth TT, Black, Since April 2004, 1 of 5 ever made more rarity info
2003 Subaru Forester 2.5X, Blue, Sept. 2005, Daily Driver with 165 HP of Fury! At least it's AWD.


305 awhp, 325 awtq(BPU minus full catback exhaust)Mods at that time
13.02@104.67 (9bs, dp, fipk, 15.5 psi, bov, no cats, streetmax clutch, 1.77 60', decent conditions, full weight (even spare tire/jack)
13.09@105.08 (1.80 60', same conditions as above)
Beyond BPU: (meaning upgraded turbos/fuel/etc) before engine rebuild Mods at that time
12.38@113.00(20 psi, 110 octane, massive knock above 6k rpms)
12.41@115.10(ditto)
After Rebuild: Current Mods Dyno Tune by IPS
12.8@108 (12.5 psi dropping to ~11 @redline, 2.0 60', pump gas, my tune)
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