Subject	Re: I was thinking if pw is so low you are entering the area
Posted by	turisimo66 on April 18, 2019 at 7:59 AM
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In Reply To	I was thinking if pw is so low you are entering the area posted by kickerzx on April 16, 2019 at 05:18 AM
Message	Folks I took the liberty of monitoring my injector duty cycle on drive home last night, results were idle 0MPH no gear 1.4% duty cycle smog1 15mph 2nd gear 2.4% duty cycle smog2 25mph 3rd gear 2.8% duty cycle cruise 70mph 5th gear 6.9% duty cycle you need fuel for acceleration not cruising!! So IMHO the smog tests (15,25) are very close to idle in terms of injector operating point. idle is of course open loop (O2) and smog is closed loop (15,25) but the control issue is the same My 94 Z32 uses 8 bit PWM for injectors so bit accuracy is about 0.4% increments. T
Follow Ups	Upgrading 300zx injectors - MJzTTZ 09:03:07 04/10/19 I would not recommend the Deatschwerks intectors - itsa300zx 13:55:21 04/10/19 Re: Upgrading 300zx injectors - ZBOOSTT 14:27:38 04/10/19 Re: Re: Upgrading 300zx injectors - MJzTTZ 15:01:25 04/10/19 Re: Re: Re: Upgrading 300zx injectors - ZBOOSTT 18:57:08 04/10/19 Nismo 740 to avoid future problems... - Ted (92TT) 21:22:15 04/10/19 Re: Nismo 740 to avoid future problems... - ZBOOSTT 22:10:11 04/10/19 Back in the day JWT wouldn't use Deatschwerk units - Gordo NA2LS Daytona 07:34:59 04/11/19 Correct. There is nothing wrong with Nismo 615cc injectors. - MixManMash 07:55:21 04/11/19 Problems as in they're not big enough and I could have got - Ted (92TT) 23:08:34 04/11/19 And actually was referring to future probs with DW... - Ted (92TT) 23:16:18 04/11/19 Any issues passing CA SMOG with 740cc injectors? - turisimo66 08:51:34 04/11/19 I have scoped my 740 nismos at around 750rpm and lambda 1... - kickerzx 13:07:56 04/11/19 (because larger pulsewidth and thereby better control) (n/m) - kickerzx 13:09:30 04/11/19 Re: (because larger pulsewidth and thereby better control) - ZBOOSTT 14:05:22 04/11/19 To be honest i dont think you will find sidefeed injectors.. - kickerzx 14:44:11 04/11/19 Re: I have scoped my 740 nismos at around 750rpm and lambda 1... - turisimo66 14:21:09 04/11/19 How does this affect emissions for a smog test? - Polish 16:33:13 04/11/19 If thats how your smog is done then no it wouldnt matter. - kickerzx 16:49:05 04/11/19 But it depends on the injector pulsewidth at the time of - kickerzx 13:21:12 04/15/19 How does the pulsewidth affect the emissions? - Polish 01:16:25 04/16/19 I was thinking if pw is so low you are entering the area - kickerzx 05:18:19 04/16/19 Re: I was thinking if pw is so low you are entering the area - turisimo66 08:51:04 04/17/19 Thing is. Dutycycle isnt really the best way to look at it.. - kickerzx 10:54:35 04/17/19 Re: Thing is. Dutycycle isnt really the best way to look at it.. - turisimo66 08:15:03 04/18/19 Yeah. I guess i was more telling others reading it.. - kickerzx 10:59:09 04/18/19 Somewhat at least... (n/m) - kickerzx 11:00:50 04/18/19 And yeah. Resolution on a 8bit ecu isnt really great :) (n/m) - kickerzx 11:17:05 04/18/19 hmmm. I MAY have made a bit of a fool of myself. - kickerzx 12:07:00 04/18/19 Re: I was thinking if pw is so low you are entering the area - turisimo66 07:59:39 04/18/19 Re: Upgrading 300zx injectors - MJzTTZ 15:37:11 04/11/19 CA SMOG pass with 740cc no problem and i have a 96 - RonZ300 (Socal) 23:21:34 04/19/19
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