30# injector Values

[ws6ick]

I ended up going to the HPT Tune Repository and using a 2000 Camaro with FMS 30# injectors and copied their IFR table and copied to mine. Now the car runs great. LTFT and STFT are almost zero.

[ls14camaross]

34.84 35.06 35.28 35.49 35.7 35.92 36.13 36.34 36.54 36.75 36.96 37.16 37.37 37.57 37.77 37.97 38.17
fuel pressure is at 43.5 not 40psi

http://fuelinjectorconnection.com/sh...od&productId=5

[golfinz]

Whats in my IFR table:
34.847, 35.033, 35.281 35.467, 35.715, 35.901, 36.149, 36.335, 36.521, 36.769, 36.955, 37.141, 37.389, 37.575, 37.761, 37.947, 38.195

My Flow Rate Modifier vs Volts is 1 across the board

[[email protected]]

Looks good... If you guys can check the PN's it would be helpful. I'm not certain if they have some variation over the years, but it would be good to know so we can catalog it. We're working on new injector matierials so we need to know those PN's and get a good database working for folks.

Bob

[golfinz]

Part number for my injectors: M9593BB302

[golfinz]

I know the Ford Red tops changed bodys but kept the same part number.

They went from:



To this:



Supposedly, the skinnier ones are more efficient/better design

[[email protected]]

I guess they did that to go with the new Mustang's bodystyle. Gotta make those injectors look stylin. LOL

Thanks for the data.

[ws6ick]

My injectors are part number M9593BB302 and here is a snapshot of my IFR.

[[email protected]]

Excellent, thanks.

[eficalibrator]

Instead of collecting a bunch of internet "village wisdom", one would think it's more accurate to just use known good OEM data. Ford posted everything you need to know on their FRPP website. Anyone bright enough to train people (and charge for the training) on this stuff should be able to translate this from Ford to GM units. Is everyone just waiting for me to post this stuff so they can copy my homework and claim it as their own?

[Redline MS]

You guys are forgetting about the "other" critical values that characterize an injectors profile. Getting the correct IFR is only part of it. Every injector sizing/make/model has specific data for short pulse adder, minimum pulse and injector offsets. These values have a HUGE impact on drivability and low pulse width parts of the tuning spectrum.

For many of us its takens years and plenty of greasing to obtain this info but Gregg is offering this "correct" information with his next level of tuning DVD's.

There is only one set of correct data for an injector. Period. The fact that you can be off 10% from what they are suppose to be and still get the car to run does not constitute a properly tuned engine. It just means you'll be lying, cheating and stealing from other tables.

Howard

[[email protected]]

I totally agree. I spent a great deal of time researching the injector flow tables for each individual injector type. You would be surprised at how non-linear each style is and how they vary greatly. I doubt that you will get within 5-8% using any of the simple methods, (ie: injector spreadsheet only). I agree that things like the minimum IPW and such play a large role in setting it up.

I believe to get it as close as possible you really need the injector calbration datasheets.

I've got to post the charts I dug up from the 80 lb injectors, it's really interesting to see how they vary by pressure and choke point.

Bob

[[email protected]]

Instead of collecting a bunch of internet "village wisdom", one would think it's more accurate to just use known good OEM data.

Actully, I agree, Greg. However, there are other data that need to be considered, and that's what I'm trying to do here. Please don't blast me for attempting to be thorough. I'm simply asking the part numbers they are using. In fact, just in researching the Ford injectors listed here (both the same sizes, but the older metal jacketed vs newer plastic bodies) I've found some differences already.

Bob

[golfinz]

Instead of collecting a bunch of internet "village wisdom", one would think it's more accurate to just use known good OEM data. Ford posted everything you need to know on their FRPP website. Anyone bright enough to train people (and charge for the training) on this stuff should be able to translate this from Ford to GM units. Is everyone just waiting for me to post this stuff so they can copy my homework and claim it as their own?

Where would one find the math/formulas to convent the data from Ford to GM...pm me if that's better. I would feel like a real tuner if I could figure it out lol

[Phil'sC5Vette]

Whats in my IFR table:
34.847, 35.033, 35.281 35.467, 35.715, 35.901, 36.149, 36.335, 36.521, 36.769, 36.955, 37.141, 37.389, 37.575, 37.761, 37.947, 38.195

My Flow Rate Modifier vs Volts is 1 across the board

Is this for 30# injectors?

I think most guys have ford 30# red top injectors, and slightly less have more like 42.

I guess the easy question would be standard:

If I have a Y body in this section of the forum and the normal fuel pressure at the rails is XX in a Y body, and I had 30# red tops, what would my tables be.

Then the forum should answer another easy questions:

If I have a F body in this section of the forum and the normal fuel pressure at the rails is XX in a F body, and I had 30# red tops, what would my tables be.

Then we can move the same questions to the next common injector, 42 #s ?

[[email protected]]

We're working on establishing a good functional collection sighting the injector part number and the additional items, such as flow rate @ rated PSI, minimum PW, offset, etc... That was my purpose in asking earlier, and I will continue to do so.

Bob

[golfinz]

Yes phil those are ford 30# numbers. I think what bob and greg are gettig at is that the numbers that some think are correct (ie that ford 30# flow at 36# at our 58 fuel psi and the calculation to get that) are in actuality incorrect...bc why else would this ifr stuff be so scrutinized

[[email protected]]

There are some other variables than just injector flow rate, which help you get closer. Injector offset voltage, minimum PW, etc... are a few. Any of our students are welcome to give a call or shoot an email and I would be happy to go over details with you.

Thanks,
Bob

[golfinz]

+1...as well as that, which I don't even know what the heck they do, other than adjust flow rate according to voltage...

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Well, you've gotta learn so give me a buzz sometime.