Im nearly coming to a completion of my h22a5 motor build with type-s pistons, crower stage 2's and rc440 injectors. I spoke to xenocron about getting an adjustable FPR and they said there is no need as the stock one is good to 450 whp. I was under the impression that you need to be able to adjust the fuel pressure when tuning..... This is my first ever motor so i have no idea how a motor gets tuned. im aiming for about 210-220 bhp

 

It's a shame you're starting with the worst H22 there is.

 

Whats so bad about it, its mechanically identical to the h22a4 apart from main bearings! Right?

 

lowest hp & tq of any H22.


Not trying to discourage you or anything. I've just never heard of something building an A5 for that reason.

 

yea the reason the power and torque are lower than the usdm engine is due to tax and emmission if im correct and its all in the tuning of the ecu. but uprating parts and converting to p28/p72 ecu all the power should be unlocked, the same as any other h22 thats the plan anyway. so back to my question please? lol

 

It doesn't matter in this case as he put Type-S pistons in.

No, you don't need FPR anyway.

 

Ok cool. Im putting the engine in an ek so do you think the fuel pressure is going to be ok for my 440cc rc's? What sort of fuel pressure should be ok, about 40psi?

 

They're 440cc at 3bar (43 psi) I suppose, so you're OK.

 

How do you adjust the fuel pressure without a FPR?

 

I think the OP means Adjustable FPR.

 

so..... you can't adjust your fuel pressure without an Adjustable FPR?

 

Well.. the most common and safest way is with an adjustable FPR. There may be other unorthodox methods.

 

Careful you don't get your *** jumped for saying something negative.

Right, Inextricabledrvr?

 

Well I dont troll HT waiting to insult ignorance. HT already has a bad reputation from "elitists" who spend most of their time doing just that. It just doesnt make sense to me to insult someone every time I post.

 

yea

 

^^
You see, it's stuff like that that causes people to get pissed off.

We just see no point in helping since people can't search.

 

yea there are ways where you basically maul the reg with a hammer and socket to change the operation of the diaphram in the reg thus increasing pressure. but its irreversible and a bit unorthadox as 92civiclude says. dont know what sparked all this other nonesense in the thread :s but there you go

 

you won't need an aftermarket FPR for the build you are doing.