Fuel pressure and ignition timing - B18C with S300

s300 and SManager software questions & answers
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strider
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Fuel pressure and ignition timing - B18C with S300

Post by strider » Tue Dec 20, 2005 3:00 pm

I have a B18C (JDM GSR) with Skunk2 Stage 2 cams and 85 mm bore 12:1 compression pistons.

The shop manual says to have stock fuel pressure for an Integra GSR at 50 psi. I noticed the SManger says 43 psi when a P72 map is loaded while holding the mouse cursor over a menu pick. Before Hondata, my fuel pressure was at the stock 50 psi. So which is it?

Also, should the ignition timing at idle be at 16 degrees or 18 degrees for this engine? Missing that part of the manual. I am confussed because the P72 map is showing 18 degrees where the car would idle.

Thanks :o

Ryan

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Spunkster
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Post by Spunkster » Tue Dec 20, 2005 3:50 pm

What year is the manual you are looking at?

strider
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Post by strider » Tue Dec 20, 2005 4:13 pm

It was an online manual for a 1994 Integra GSR (I don't have the link at this computer). One thing I forgot to mention is that my engine is OBD2 from 1997. But the fuel pressure should be the same from my understanding.

strider
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Post by strider » Tue Dec 20, 2005 4:23 pm

Here is the picture and the original link for the fuel pressure setting.

<http://www.redpepperracing.com/technica ... 94Integra-
FSM-11c/aaj.png.html>
Attachments
b18c_fp.JPG
B18C1 Fuel pressure
b18c_fp.JPG (645.07 KiB) Viewed 2549 times

crucian
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Re: Fuel pressure and ignition timing - B18C with S300

Post by crucian » Wed Dec 21, 2005 1:37 pm

Please read that again, cause I don't think that it's saying to set it at 50psi. Find the where it has the Fuel and Emissions Specs at the beginning of the book. For example the 2000 B16A2 should be set at 40-47 PSI with regulator vacuum hose disconnected and pinched.

strider
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Post by strider » Wed Dec 21, 2005 1:48 pm

I'll have to look over the begining of the book. Thanks

It does say that when the difference between the fuel pressure and manifold pressure exceeds 50 psi (B18C1), the diaphragm is pushed upward, and the excess fuel is fed back into the fuel tank through the return line.

B18C1 engine:
48-55 psi (with the fuel pressure regulator vacuum hose disconnected and pinched.

Ryan

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Post by Spunkster » Wed Dec 21, 2005 3:35 pm

The calibrations are included to give you a starting point to begin tuning. The calibrations will not run every car the same or perfectly without making changes to them.

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