Adjustable fuel regulator needed or not?
#1
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Adjustable fuel regulator needed or not?
Hi, I have just fitted a Hybrid FMIC and am looking to get a remap soon and thought I might as well get an up rated fuel pump and a 550cc injectors put in as well to compliment the FMIC, while doing some investigation into fuel pumps I read that on impreza’s it’s a good idea to get a Adjustable fuel regulator, but when I asked the garage that will be carrying out my remap and doing the mods they said that the AFR was not needed and not for me to waste my money on one?
What are your thoughts on this?
Many thanks
What are your thoughts on this?
Many thanks
#2
Originally Posted by CyberScoob
Hi, I have just fitted a Hybrid FMIC and am looking to get a remap soon and thought I might as well get an up rated fuel pump and a 550cc injectors put in as well to compliment the FMIC, while doing some investigation into fuel pumps I read that on impreza’s it’s a good idea to get a Adjustable fuel regulator, but when I asked the garage that will be carrying out my remap and doing the mods they said that the AFR was not needed and not for me to waste my money on one?
What are your thoughts on this?
Many thanks
What are your thoughts on this?
Many thanks
Of course, if you are well within the fuelling requirements of your new set up then neither fuel pump or reg are needed ... but if doing a pump a reg is suggested!
#3
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It is not normally recommended to fit a high flow fuel pump with the oem FPR for the reasons shown below :-
Cheers
Any very high flow pump can overrun the tiny stock FPR, causing the base fuel pressure to be higher, and making the fuel curve nonlinear, making the ECU's control of the fuel more difficult
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