Really? Where in the world would you go for that?

 

Not sure in your area, but at least around where I live there are several "fuel injection specialty" places that will do it. Ends up being anywhere from $80-120 to clean and flow match.

You know, i might know someone in your area that will do it... give me a few moments.

EDIT:

Never mind he moved.

 

That figures. I can see me walking in or calling around and asking about that. The idiot on the other end saying: "Whuts that? Naw we don't do that". Kinda like asking for a Mandrel bend. They just scratch there head and try to convince you it isn't worth doing.

 

I guess my next question is, is it worth it? I have a set of FMS 39lb injectors. Should I switch to the flow matched ones?

 

People will argue to the moon on that... On our motors I would say not.

If you were doing some stupid exotic engine it would be.

 

I tend to agree with FF as not really worth it. FRPP contends their injectors are matched to within .5%. Their price sort of indicates that too. If these were stock, run of the mill, injectors, it couldn't hurt to have them calibrated. For a DD with some track time, it just seems hard to justify.

 

I find myself agreeing with both of you. I have been told that horsepower can very by as much as 15% from cylinder to cylinder due to injectors not being matched. However with the price of these I just cant see them being that far off. Kinda thinking the money would be better spent on an e-fan.

 

Like Windsor said, most are within 1% off or tighter standards anyway. It's REAL hard to get past that. .5% is about as close as you are going to get...

If cylinders are ranging 15% hp alone from injectors, you have an injector really f'd up.

Most of the time you will see "large" variances of heat/horsepower per cylinder because of intake manifold design, oil passage design(some cylinder don't see as much oil as others), then just the differences between ring gaps etc. on cylinder during assembly.

A lot of old pushrod small block fords had an oil galley "problem". A trick would be to drill and tap two holes and added some fittings and line in the engine valley to feed oil better to the back to cylinders as there would be a pressure drop before the oil gets there.

Intake design is really noticed when spraying nitrous and/or adding fuel injectors at the throttle body. Front mounted throttle bodys, such as you see on ls1 type vehicles, vipers, newer mustangs, etc. have a problem with getting the same amount of nitrous to the back two cylinders because of the longer distance it must travel.