? About 42 injectors

[ReeseLightning]

I've seen I these referenced when talking about doing the E85 mod but what about for premium 93? Are they just top shelf injectors at that point ? And what spark plugs would be a good pairing with the Bosch 42s ? I may get the spark plugs now and wait on the injectors depending on what applications are possible.

 

[Stew]

The only problem with the OEM injectors is that with a tune they are pretty much at their limit of being able to deliver fuel. So with an E85 tune, which will use more fuel than regular fuel because E85 contains less energy per unit than regular fuel, you have to upgrade your injectors.

If you're not going E85 then the OEM injectors are probably ok, but as you get up there in airflow you do not have any wiggle room for fueling, which is why I put in the 42 lb injectors. There are lots of tables where the ECM will enrich the mixture, such as cat overtemp protection, if IAT gets over 80* it enriches the mixture, again at 100*, and there's more. Sooo, if you push your IDC to the limit and the ECM tries to add more fuel and can't, that could potentially be a problem.

 

[ReeseLightning]

I'm planning on full tuning once I get the funds together. Would they be able to correlate a tune if im I using 93 with #42s?

Or doesn't trifecta mess with AFR ?

 

[Dubbs_RS]

They can tune for 42's on 93. That's what I am running.

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[ReeseLightning]

What spark plugs are you using Dubbs ? I was looking into these Zex power racer or Zex power tune. Not sure which one would be more suitible considering I'm going to be tuned for the tune plugs and have a turbo for the power plugs.

 

[Dubbs_RS]

I am just running the stock ones. Haven't had a problem with them at all so I've seen no real need to change them.

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[ReeseLightning]

Ok I was looking into getting new ones for the winter season anyway cold starts can be a problem since I park outdoors

 

[CheapFuneral]

Just get some nice Bosch ones or something. Personally I don't go fancy the e3 and such look cool but offer very little difference. The plug can only spark once per charge so having +4 or e3 is almost useless. The only thing I can see them helping with is lasting longer because u have more surface points to contact, but because they can't be easily gapped you won't know they are correct.

 

[NewZJ]

If you run the +4 long enough it will wear down the smaller gaps and even them all out. You won't notice much of a difference anyway though.

 

[ReeseLightning]

I was planning on getting the Bosch ones, new questions though. When I lost the retainer clips off my fuel injector harness I cam across these fuel injector plugs, so will the stock ones run correctly with the Bosch 42s, do these just improve the 42s even more ?