Subject	If the AF is spot on and power is normal, why are my
Posted by	whatsthegoodword on October 03, 2007 at 4:48 AM
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In Reply To	What is the correct inj milliseconds opening time for 98% posted by whatsthegoodword on October 03, 2007 at 04:46 AM
Message	injectors at 98% duty (way too much) at only 13.8 psi? At WOT, the ecu is controlling the injectors from the maps, so if the inj. were undersized or oversized, wouldn't the AF read rich or lean? Even if the boost controller's reading was off from a pinched line, etc., wouldn't a 98% fuel inj show up in the AF or power level? The reason I am worried is because I got bosch injectors to replace the old bad inj (I know, I know), BUT they have identical caps to the OEM injectors, have a nissan symbol on the top, and say made in japan in the same spot. They are also purple w/blue dot. Below is a pic. I checked fuel pressure less than 3,000 miles ago, was in spec, but if the AF is correct the fuel pressure isn't the problem since it's going off the maps right? ..................................... myturbodiesel.com The technical turbo diesel forum and technical website. Distributor of Blazt Nissan consult diagnostic cables, Datascan, now with pocket pc PDA support and reseller of ConZult software. For more info, check out my ad in classifieds!
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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