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[11 CVO Convertible]

I need a set of injectors for my 110" build.  I'm hoping to push 130 hp at the wheel.  I was told by my tuner to make sure to get a flow-matched set of injectors, but the only company that says they have flow-match injectors is Marren.  I have emailed RC Engineering, but haven't hear back on their injectors.  Do I have any other options for flow-matched injectors?

[Heatwave]

I think you'd be fine with HD's SE 5.3gms/sec injectors.

[cherryseeg2]

Go with marren.

[Steve Cole]

Properly flow matched injectors will always give you a smoother running engine. The question really that needs to be asked is where are they flow matched at? Some get flowed only at max and that is not any better than just getting ones out of the box. They really need to be matched up and down the entire operating range for it to be worth the trouble of getting it done.

4.35 g/s injectors are good for ~ 55 hp per injector
5.3 g/s injectors are good for ~ 68 hp per injector
6.2 g/s injectors are good for ~ 79 hp per injector

So depending on what power output your looking for pick the proper size.

[11 CVO Convertible]

Properly flow matched injectors will always give you a smoother running engine. The question really that needs to be asked is where are they flow matched at? Some get flowed only at max and that is not any better than just getting ones out of the box. They really need to be matched up and down the entire operating range for it to be worth the trouble of getting it done.

4.35 g/s injectors are good for ~ 55 hp per injector
5.3 g/s injectors are good for ~ 68 hp per injector
6.2 g/s injectors are good for ~ 79 hp per injector

So depending on what power output your looking for pick the proper size.

Yeah, I'm sure that most are flow matched at a static open condition, 80% duty cycle or something like that.  I'd love to be able to drop in a set of Injector Dynamics ID725 injectors, but they won't come close to physically fitting (too long).  With that said, who's injectors do you run Steve?


On another note, RC Engineering emailed back and said theirs are matched within 1-2%.  Does anyone know the approx flow ratings of Marren's stage 1, 2 and 3 injectors?

[sadunbar]

I get my injectors from HorsePower Inc.   

http://www.horsepowerinc.net/

[Steve Cole]

Stock HD injectors are +/- 4% and for street stuff I just use them out of the box. For racing parts we buy several sets of them and HOPE we find one good matched set from the bunch. A friend owns a injector flow bench that I can use at times. I have bought 5 sets only to go back and buy a few more before I could get a well matched set out of them but it's worth it for racing.