h22a193

Well santa brought me a vafc2! And well before i go spending money on well needed dyno time, I would like to properly do everything small thing I can do to get the most out of the dyno time.

Well my question is that, do you think that getting a FPR would be worth it, Do i need one with the vafc2, and if so, should I get a gauge. Also, it may be a while till the dyno time, because of free mods and maintance, so would it hurt to go ahead and insall it?

Where would I set it at, in the settings.

Also, my timing belt, and ect. are due for changing in like 4000 miles, should I also go ahead and replace this, and go ahead an get cam gears so they can be tuned also. ]

Thanks, Daniel

Mike95lude

If your engine is internally stock and you just have bolt-on's an adjustable FPR shouldn't be at all necessary, you'll really only likely need to lean out the A/F and the V-AFC is good for that. The stock fuel maps are fairly rich even for a bolt-on equipped car usually. If you have cams or higher compression pistions then I would definately invest in an FPR to up the fuel pressure and then use the VAFC-2 to fine tune it.

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NXLude

Since the VAFC doesnt add fuel, you would only need the fpr to add a bunch of fuel and the VAFC to pull some back out. This is assuming that you have mods to make it needed (like mike said)

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H22 DC2 in the works

MC_HondaRacing

I'm pretty sure you can add fuel with the VAFC. I know I can with mine.......

NXLude

It will add, just not that much that well.....at least in terms of an engine with higher compression and cams and things

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H22 DC2 in the works

Joon525

That's what I've heard as well, it does a semi-poor job of adding. But do your mods call for a rise in fuel pressure to begin with?

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NXLude

Do mine? I am gonna say yes they do......with 11:1 CR and big cams I can guarantee that I either need bigger injectors (ran at stock fuel pressure) or stock injectors ran at higher pressure. The stock injectors should feed enough fuel, its just not enough fuel at stock pressures. Its best (IMO) to turn up the fuel pressure till its rich all the way across, then use the VAFC to pull out what you dont need.

All I have for facts so far (seeing as I am untuned) Is that at 52 psi (at idle) my setup gave a rich cell code......so I am guessing that I would need to be around 50 psi when I start pulling fuel out.

Ill be able to tell you more when I tune it and see exactly what is changed fuelwise.

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H22 DC2 in the works

Joon525

Sorry I should have clarified something. The "you" in my post was meant to be a general term. I already knew you had extensive modifications NXLude.

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