Subject	check out this thread in tech
Posted by	PakiHomBoy on April 28, 2007 at 9:03 PM
	This message has been viewed 72 times.
In Reply To	555 injectors posted by azz on April 28, 2007 at 08:15 PM
Message	[ [ http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=1026527 ] ] this was being discussed in there...pretty much, 555s or 740s should give pretty much the same MPG as the stock 370s under similar driving habits...but then again, when you have that extra power, you are prob more likely to use it... one thing i didnt understand though...with bigger injectors (555s or 740s), how are they flowing the same amount of fuel as 370s under "regular" driving, but then only flow more fuel when "you need it" (when you're boosting)??? i guess what i'm asking is how does the injector know what to do? is this a function of the ECU? i think i may be overthinking this and confusing myself...any help to clarify? i feel like a noob
Follow Ups	555 injectors - azz 20:15:23 04/28/07 18ish mpg driving at low boost setting of 16psi (n/m) - dyno 500 HP 300ZXTT 20:31:25 04/28/07 I get 20-24mpg with 740's and a fairly heavy foot. (n/m) - whitepearlz 20:31:46 04/28/07 nice! (n/m) - nemo1080 20:39:20 04/28/07 that's mostly highway? (n/m) - Zlicious (Seattle) 20:41:32 04/28/07 I'd say about 75% highway. The EBC is contantly set - whitepearlz 20:58:28 04/28/07 sp500 reciept? (n/m) - Waco300zx(DFW) 21:36:04 04/28/07 I'm running stock turbos and 555's. - jmw23712 20:35:57 04/28/07 I have 555cc's, test pipes, split DP's and stock cat back - nemo1080 20:40:08 04/28/07 9psi??? - Zlicious (Seattle) 20:43:27 04/28/07 You must drive WOT about 80% of the time :) (n/m) - gpa311 (LA) 20:43:35 04/28/07 either that or he has a leaky injector o-ring (n/m) - spyhunterTT(nj) 20:49:06 04/28/07 Wow ok so its not much different than the 370s ? - azz 20:50:08 04/28/07 leaking fuel lines?? hole in fuel tank?? (n/m) - dyno 500 HP 300ZXTT 20:48:47 04/28/07 Arithmetic, maybe? (n/m) - na300zx (OH) 20:52:59 04/28/07 i hope so =-) (n/m) - nemo1080 16:26:09 04/29/07 13-14mpg 370cc and 720cc. City driving aggressive. - Red Z 11:26:22 04/29/07 upgrading at worrying about mileage don't go together (n/m) - robo (sebring1970) 20:59:57 04/28/07 nor upgrading at worrying about gas prices (n/m) - dyno 500 HP 300ZXTT 21:17:28 04/28/07 check out this thread in tech - PakiHomBoy 21:03:14 04/28/07 it is a function of the ECU mapping. - Guapo 21:09:58 04/28/07 great explanation, thanks (n/m) - PakiHomBoy 21:13:33 04/28/07
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