I have an H22 w/ CAI/H/E . Would an adjustable fuel pressure regulator benefit me? How much would I be able to gain from an adjustable FPR?

 

I would say no, you just have the basic bolt-ons. You are basically just letting the engine breathe easier/more efficiently. Until you get into forced induction or nitrous or internal engine work (headwork, cams, compression etc...) you will not benefit from changing the fuel pressure.

 

I would also say no you do not have anything that requires more fuel your ecu can make up the difference for now

 

Well contrary to what you have been told Yes! You need a Adjustable fuel regulator to provide the engine with that much more fuel on the open wide throttle.. especially since you are getting more air into the engine the Manufacturers compensate for this to a degree. They never knew that a cold air intake or direct KN filter with headers and exhaust would be installed. Now the amoutn of adjustment is small with this much bolt-ons but their is a benefit and it is good. Expect gains of 3- 8 hp with adjustable fuel regulators but tunig at a dyno would yeild the best results....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Nissmaxx &raquo;</TD></TR><TR><TD CLASS="quote">Well contrary to what you have been told Yes! You need a Adjustable fuel regulator to provide the engine with that much more fuel on the open wide throttle.. especially since you are getting more air into the engine the Manufacturers compensate for this to a degree. They never knew that a cold air intake or direct KN filter with headers and exhaust would be installed. Now the amoutn of adjustment is small with this much bolt-ons but their is a benefit and it is good. Expect gains of 3- 8 hp with adjustable fuel regulators but tunig at a dyno would yeild the best results....</TD></TR></TABLE>in fact I have a BM with your same bolt ons and before the fuel regulator I was running a little bit lean at wide open throttle. With Regulator I eliminated that problem....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxblueteg &raquo;</TD></TR><TR><TD CLASS="quote">I would also say no you do not have anything that requires more fuel your ecu can make up the difference for now</TD></TR></TABLE>

I agree, I also don't believe you said you can gain up to 8 horsepower by adjusting fuel pressure? 8 horepower to the wheels is a big gain, he only has i/h/ex. I have yet to see a honda yield that kinda gain with only those mods and adjusting the fuel pressure.

 

You can always benifit from tuning

I wouldn't stop at a FPR though, go ahead and get an AFC (or other a/f tuning device), and some cam gears.

You are mistaken if you think you can't get any more power out of the stock cams.

 

You are mistaken if you think you can't get any more power out of the stock cams.[/QUOTE

Who said you can't get any more power out of stock cams? I totally agree that an FPR and tuning are very beneficial to do, but the question was at this stage of tune. He only has i/h/ex. Adjusting the fuel pressure with just those bolt-ons will not gain much if anything, period..... I am not trying to talk you out of purchasing a FPR, I just don't want you to think that you will get big power gains now. If you are going to get serious with your mods, then go for it.


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do you have dyno sheets to back that up?

I have a dyno that shows an ITR gaining roughly 10 peak hp after tuning with just i/h/c/e.

 

i've got dyno sheets to back me up...
10 whp and 3 ft lbs gain just by tuning my hondata

 

well with the mods he has at the moment the stock ecu should be able to adjust the fuel more than enough. It is never going to be as good as a hondata tune but it works

 

i got a apexi vafc do u think i need a FPR

 

If you reset your ECU right after you add a part to your car then it will sense the mod and ajdust the fuel settings already. If not, then after a week or so of driving, then your ECU will adjust it.