Fuel pressure regulator???

amair001

Member
:
2001 Mazda Protege MP3
Does anyone know were i can get a fuel pressure regulator?? Im having my microtech installed and tuned next week and i was told id need one. Any help would be apprectiated.
 
Does anyone know were i can get a fuel pressure regulator?? Im having my microtech installed and tuned next week and i was told id need one. Any help would be apprectiated.

You dont NEED a new fuel pressure regulator when installing a Microtech. It will provide another variable with which to help you tune though but it also means it will take longer for the tuning process as you will be playing with fuel pressure as well as everything else.
 
Yes, i know that. But i still need to find one. The only one ive seen is the one from protegegarage. You know of anywere else i could find one??
 
i had the standard fuel pressure reg on my car, with microtech, for more than 12 months - i've only *just* put an adjustable unit on...whoever told you that you *need* one was speaking out their butt....if it was your tuner, for gods sake FIND ANOTHER TUNER!!!!!!
 
Ive got a 255 walbro fuel pump, the perrin fuel rail and bigger injectors goin in with the microtech, why would i upgrade all this stuff and leave the stock fpr??? Im gonna need to be able to adjust it rite??
 
the car runs plenty of fuel pressure with the factory regulator and the walbro high pressure 255lph pump. If your tuner says you need a regulator he must think you are going to run out of fuel or he does not know what he is talking about. Factory fuel system is good to 200hp at the tires. 550cc injectors with a walbro 255lph pump you will have enough fuel for 380hp NA or 350hp with boost, and this is at FACTORY fuel pressure.

With the microtech you change injector pulse width, not fuel pressure. You adjust fuel pressure when you have factory injectors and no other way to tune your car.
 
Yea, but wont you get a better tune if you able to adjust the fuel pressure??

no...why would you? the only benefit would be better fuel atomization - which would not even be measurable on a dyno.

Upping the fuel pressure also gives you "free duty" - that is, it allows the injectors to flow more at lower duty, giving you more head room before you need to upgrade. Given you are in the NA forum asking all this, I can tell you right now, the stock injectors are likely to support just about any NA goal you have unless of course you are looking at crazy high RPM (in which case the reason to go to bigger injectors is not more fuel flow - its same fuel flow for less duty cycle).

i replaced my regulator because i broke the stock one. If i hadnt done that, I would not have bothered.
 
I apprectiate the help and opinions, the guy doing my tune must have thought the car was boosted. Little does he know
 

New Threads and Articles

Back