Subject	More or less yes.
Posted by	SeanK (StL) on October 03, 2007 at 9:18 AM
	This message has been viewed 85 times.
In Reply To	does that mean one can run boost as high as possible posted by Z Driver on October 03, 2007 at 08:41 AM
Message	As long as the ECU is setup for the injectors you are running it should provide enough fuel for the amount of air the turbos are pushing into the engine. This is true as long as the MAF isn't maxed too. With a set JWT/ASH/Z1/Ztuner ecu the AFR might not be as smooth as with a custom tune or S-afc smoothed fuel curve, but it should be relatively close barring no other problems with the engine. Normally about a 80% duty cycle is about the maximum you want to see to maintain a good factor of safety. If you consistently run above that, turn down the boost or get bigger injectors.
Follow Ups	Stage 3 dyno, how does it look? Too lean or okay? - whatsthegoodword 18:15:34 10/02/07 How much boost were you running? - 91Z32TT 18:24:56 10/02/07 13.8 psi peak w/blitz SBC (it has a peak hold feature so it - whatsthegoodword 18:52:23 10/02/07 Are most dyno's run in fifth gear? (n/m) - CameronSF 18:36:20 10/02/07 no, fourth. (n/m) - jmw23712 18:38:19 10/02/07 maxed out my inj., this is why u need a blazt consult cable - whatsthegoodword 18:58:30 10/02/07 I have the cable and software, but.... - pieboy100 01:11:26 10/03/07 Just ask, I don't bite. I'm easy to get ahold of and while - whatsthegoodword 02:17:09 10/03/07 Looks good for a start, but some of the other featurea - pieboy100 14:40:45 10/03/07 Looks about right for your mods. The A/F is terribly high - Agner.S(CT) 19:08:09 10/02/07 how are your compression numbers? (n/m) - spyhunterTT(nj) 22:14:26 10/02/07 ... - Broke_as_**** 22:47:33 10/02/07 Spot-on. :) - Ash's Z 23:00:55 10/02/07 What is the correct inj milliseconds opening time for 98% - whatsthegoodword 04:46:53 10/03/07 If the AF is spot on and power is normal, why are my - whatsthegoodword 04:48:26 10/03/07 my car will max out stock injectors at 7k at 14psi too (n/m) - spyhunterTT(nj) 06:10:51 10/03/07 not unusual at all > - ztunerz 08:00:54 10/03/07 does that mean one can run boost as high as possible - Z Driver 08:41:43 10/03/07 Size the injectors for 75%-80% max duty cycle, not 90% (n/m) - 300zx90 (CO) 09:18:04 10/03/07 More or less yes. - SeanK (StL) 09:18:07 10/03/07 14psi is still too high for stock injectors (n/m) - 300zx90 (CO) 09:19:55 10/03/07 agreed (n/m) - Guapo 09:43:53 10/03/07 Wanna lower the duty cycle? Get bigger injectors :) (n/m) - 300zx90 (CO) 09:20:41 10/03/07 Or lower the boost. - BigTDogg (MA) 15:10:13 10/03/07
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