schwett

out of curiousity, why would you guys want an aftermarket fuel rail? (other than the gentleman who wants a test port)

to install larger injectors (like off the shelf RCs), which of course means a new ECU....... ?

planning on pushing a couple hundred (300+) whp?

ChrisD

schwett: To support bigger injectors, yeah. The way I understand it, bigger injectors create variations in pressure through the liquid in the rail called a backpulse. If a backpulse is encountered when another injector fires, you have a potential situation where the injector does not provide enough fuel, and if the backpulsing is severe enough, you can create a serious lean condition (and boom).

cd

cubg1

I am interested for sure. I have been looking all over for one with no luck (AEM, Comptech, etc.). I do need an 1/8 NTP hole to attach a fuel pressure sending unit hookup line, otherwise it will do me no good.

Let me know if you are going to go ahead with this and then we can discuss more details.

Thanks,
Brian (cubg1)

cjb80

Fuel pressure readings can be had by drilling and tapping the stock fuel rail. No big deal.

I can provide pictures of my setup if you'd like..

Chris

cubg1

hecash and cjb80

cjb80 - pictures would be awesome!!! I was just had that idea this morning myself after I was reading how AEM fuel rails have a fitting for fuel pressure senders or nitrous. What size bit and tap # did you use?


hecash - I would like to put a T in, but the line is steel leading up to the regulator. I don't know what types of fittings I would use if I were to splice the rubber line that goes between the steel line at the firewall and the steel line to the fuel regulator. I have been warned that the pressure is high (Honda ESM says 47-54 psi.) so clamps probably wouldn't do the trick.

Thanks,
Brian

cjb80

The tap you use depends on the fuel pressure guage it's self. Any competent performance or mechanic shop should be able to do this.

You can see it here front and center.

PS- Also pictured here are full size, regular, used-to-fit-in-a-mustang, plain old RC Engineering injectors fitted in an S2000.





Chris

cubg1

That is one sweet setup - thanks for the pics. What kind of HP do you see at the wheels - it looks like you have a turbocharger?

cjb80

Last dyno was 405rwhp, expecting around 430rwhp with additional tuning. 20psi with 93 octane.

Chris

cubg1

1/4 mile, 0-60? I am just starting to upgrade my S2000, I could use any advice or tips on good upgrade investments info you have. Your numbers are very impressive considering that a comptech supercharger is good for 340 at the crank. What else have you done besides tubo - I notice the 20 lbs. of boost is prety high - is that what contributes the most to your high HP numbers? Have you had any problems running that much boost?

Brian

cbender

Hi Chris,

I take it that with the AEM, there's no problem with the ECU seeing boost, hence you've eliminated the check valve and MAP sensor?

Also, you might want to sleeve your radiator hose -- I have also removed the clamp on the strut tower in order to route the hose UNDER the blowoff valve -- in order to keep the BOV from eventually forcing a rupture in the hose. Mine was showing wear.

Best,