Fuel Pressure for JRSC (10 psi)

[lundgren]

What injectors do you have?

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http://www.groupbuycenter.com/

[Holden]

What pulley combination are you using?

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Greg Holden
96 GSR, JSRC @10psi, All the Goodies!
Best 1/4 ==> 13.556 @ 105.29mph
My JRSC Install Site

[ndmracing]

I am using the stock injectors and it is the 3.5" pulley on the charger itself.

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AAAAWWWWWWW YYYYYEEEAAAHHH!!!

[strng1dah]

you can leave base at 58-60, but make sure the rise rate is high enough to provide enough fuel. You will need around a 5:1 ratio. Also stock injectors are getting a wee bit small for 10 psi

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2000 No Longer SC'd GSR
Soon to have shiny pipes courtesy of Drag.
www.strng1dah.homestead.com

[Zeus]

Your going to lock up those small injectors Nick... get some biggers ones...

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1998' 4dr GSR, 8psi JRSC , 320cc injectors, Cartech adj. FMU, Walbro HP fuel pump, TPS trick in the works, valves set to .005i/.006e, MSD BTM, B&M CommandFlo regulator, stock intake w/ITR "cool air" resinator, Greddy sp exhaust, Tokico Illumina 5-ways, ITR springs, Skunkworks 22mm rear swaybar(removed due to mount torn out at present), ES motor mounts and front swaybar bushings, 205/50WR/15 Kumho Supra 712s, KVR Carbon Fibre pads, Super blue dot 4 brake fluid, B&M fuel pressure gauge, Autometer sport comp A/F gauge in dimmer location
...

YLW 00' Type R #00-1011 with "special tuning" and 143db triple air horns

Honest officer, I had no idea how fast I was going...the speedometer only gos to 150...

[ndmracing]

I understand I need bigger injectors, but the problem is under part throttle...maybe 3-4 psi. The stock ones are fine right now, I'm running plenty rich. They are gonna have to hold until I get new ones. Any suggestions on brands of injectors and size?


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AAAAWWWWWWW YYYYYEEEAAAHHH!!!

[rjaffey]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>I am using the stock injectors and it is the 3.5" pulley on the charger itself.<HR></BLOCKQUOTE>

You meant 3.8", right?

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[This message has been edited by rjaffey (edited August 30, 2001).]

[Holden]

I would put on the "TPS Hack" that rjaffey figured out. It uses the existing 1psi pressure switch plus a relay and some resistors so that as soon as you go over 1psi boost, the TPS signal to the ECU says WOT, regardless of throttle position.

It forces the ECU to use the WOT open loop fuel maps any time you're boosting.

$10 and a few hours of your time. Search the archives, it's been covered extensively.

And, yeah, get bigger injectors!

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Greg Holden
96 GSR, JSRC @10psi, All the Goodies!
Best 1/4 ==&gt; 13.556 @ 105.29mph
My JRSC Install Site

[ndmracing]

Just wondering what the correct base atmospheric fuel pressure is for an Integra GSR with a JRSC pushing 10 psi. I have a Cartech 2005. The Cartech instructions say 40-45 psi but the car ran like crap and was way lean. Jackson racing reccommends 60-65 psi and it is set at 65 psi now. Car runs good at full throttle, but when accelerating normally it runs lean for a few seconds and then the air/fuel jumps up to normal. Then at about 3500rpm it bogs for a second and runs lean for a second. Any ideas of what's wrong?

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AAAAWWWWWWW YYYYYEEEAAAHHH!!!

[sullust]

Holden, on the TPS hack what happens when the ecu uses the WOT fuel map without the throttle nessesarily being at WOT? Also, should everyone use this hack or should you only use it under certain conditions? (such as 10psi when your injectors are about maxed out)

Thanks!

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