SR Fuel Injector Issue - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s.tamayo1991 · 08-13-2013, 10:25 PM

Hey guys so i just did a swap on my s14.. I put an s14 sr20. It came with tome 740cc injectors however one of them was bad. to no ones surprise i have a misfire. So i put an injector from my KA and it got a little better but still shitty. I need to buy another 740 injector tonight. Can i buy a Deatsch Werks injector from a 300zx same size same plug? or should i just get another Tomei injector for an SR? Im worried that the frequency or something internally in the injector may be different. I read some where that they open and close at different speeds. Anyone have experience with this? Much appreciated.

joe3180 · 08-14-2013, 12:30 AM

For me...same company and have them flow matched.

Silviasurfer · 08-14-2013, 08:38 AM

dont play with fuel.... duty cycle might be the same but the dynamics of each brand may vary go wid the tomei

codyace · 08-14-2013, 10:19 PM

Keep injector brand/type the same.

cotbu · 08-14-2013, 10:45 PM

There's a reason not to mix and match the injector brands.
And a big NO NO for adding 1 DW injector. The latency and actual flow. The latency will be incorrect for the same size, and the actual flow will differ drastically. It's probably a better idea to have the faulty injector rebuilt along with the good ones. There used to be an addition driver device that could allow you to add the injector seperately from the ecu, you could use that as a temp fix, but the cost outways the first option.

08-13-2013, 10:25 PM	#1
s.tamayo1991 Join Date: Jan 2013 Location: queens ny Age: 30 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	SR Fuel Injector Issue Hey guys so i just did a swap on my s14.. I put an s14 sr20. It came with tome 740cc injectors however one of them was bad. to no ones surprise i have a misfire. So i put an injector from my KA and it got a little better but still shitty. I need to buy another 740 injector tonight. Can i buy a Deatsch Werks injector from a 300zx same size same plug? or should i just get another Tomei injector for an SR? Im worried that the frequency or something internally in the injector may be different. I read some where that they open and close at different speeds. Anyone have experience with this? Much appreciated.

08-14-2013, 10:19 PM	#4
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Keep injector brand/type the same. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

08-14-2013, 10:45 PM	#5
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 47 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	There's a reason not to mix and match the injector brands. And a big NO NO for adding 1 DW injector. The latency and actual flow. The latency will be incorrect for the same size, and the actual flow will differ drastically. It's probably a better idea to have the faulty injector rebuilt along with the good ones. There used to be an addition driver device that could allow you to add the injector seperately from the ecu, you could use that as a temp fix, but the cost outways the first option. __________________ LoverTechnologies "Half Broken Things!"

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08-14-2013, 12:30 AM	#2
joe3180 Zilvia Junkie Join Date: Aug 2005 Location: 909 california Posts: 356 Trader Rating: (11) Feedback Score: 11 reviews	For me...same company and have them flow matched.

08-14-2013, 08:38 AM	#3
Silviasurfer Join Date: Mar 2011 Location: NJ Age: 33 Posts: 44 Trader Rating: (1) Feedback Score: 1 reviews	dont play with fuel.... duty cycle might be the same but the dynamics of each brand may vary go wid the tomei