h22 fuel pressure regulator tuning
05-08-2005, 06:42 AM
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h22 fuel pressure regulator tuning
I got a h22a4 with vtec controller, intake, header, straight pipe. what should the fuel pressure be set at for most power and/or how do i know what to set it at?
05-15-2005, 03:35 PM
#4
if you are running the stock injectors it should be aroun 50-54 psi, if you are running obd 1 injectors it should be 36-40 psi. if you are running aftermarket injectors i cant say.
05-15-2005, 03:41 PM
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Re: (v4lu3s)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s »</TD></TR><TR><TD CLASS="quote">if you are running the stock injectors it should be aroun 50-54 psi, if you are running obd 1 injectors it should be 36-40 psi. if you are running aftermarket injectors i cant say.</TD></TR></TABLE>
What if i have a h22a4 on stock injectors but the harness was converted to obd1 and i am running a obd1 p13 ecu?
What if i have a h22a4 on stock injectors but the harness was converted to obd1 and i am running a obd1 p13 ecu?
11-17-2018, 04:14 PM
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Re: h22 fuel pressure regulator tuning
Yeah I got the same question too. I'm running a jdm h22. I'm wondering what or fpr I can run in my h22 or would I have to get the jdm h22 fpr. I'm running 370cc injectors but everything else is stock but the type s pistons and bolt ons
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11-18-2018, 08:09 AM
#8
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Re: h22 fuel pressure regulator tuning
stock fuel pressure for ALL h22's is around 43psi base pressure.
The stock FPR is perfect for stock fuel pump or walbro 255 pump. The only reason you would ever need to run an aftermarket FPR is if you run a fuel pump that is bigger than a 255.
11-19-2018, 07:41 AM
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Re: h22 fuel pressure regulator tuning
11-23-2018, 03:18 PM
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Re: h22 fuel pressure regulator tuning
Ok. My other question is will I be able to use a oem h22a4, h22a1, h23a, and a f20b fpr for my jdm h22? Because the fuel rail I got didn't come with one and I've been looking all over to find one or find info on what's compatible with my motor.
11-24-2018, 07:44 PM
#11
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Re: h22 fuel pressure regulator tuning
so yes
11-24-2018, 09:16 PM
#12
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Re: h22 fuel pressure regulator tuning
Holy cow... enough of the guessing already everyone. The appropriate answer is to strap the car to a dyno and adjust the static (vacuum line removed and plugged while the engine idles) fuel pressure so that the car has an A/F value of 13.0 to 13.2:1 under a WOT pull. Whatever that value is... IS what makes the most power and is safe to operate.
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