PDA

View Full Version : RWP FSE Fuel pressure regulator



TE-Advance
04-06-2004, 09:15 AM
Just looking a getting one, wonderin if i could get some feedback on power increases, fuel consumption and price. Thanks guys

dingo
04-06-2004, 10:03 AM
i don't think they give much more power, if any, but they improve throttle reponse and iron out any flat spots! I'd be looking at a larger Throttle body before the rising pressure reg.

Tiphareth
04-06-2004, 10:16 AM
will just make your ride a bit smoother, and maybe like 1-2 HP unnoticable gain.

good if ur getting extractors

Trav

Leo11
04-06-2004, 12:50 PM
Its all to do with throttle response and to iron out any flat spots when accelerating, particularly in a modded motor. Probably no increase in max power. Waste of time on an unmodded motor.

Altera98
04-06-2004, 05:18 PM
it can be used to generally enrich mixtures by making valve to fuel return line harder, it does nothing if tuning is already good. i have one and a problem i see with it is that if you only have a problem with too lean mixture at certain revs range, the fpr will affect the whole rev range not just the area u want to focus on.

driver
04-06-2004, 06:14 PM
Considing I have a K&N Panel + Lukey Muffler now, if I'm getting RPW Extractors along with an Emanage, is it worth the money getting a FPR then?

Tiphareth
04-06-2004, 07:50 PM
Yes :)

will smooth out any flat spots with the extractors

Trav

BOosted' BOoya
05-06-2004, 05:23 AM
no -

because you tune your greddy to compensate for the loss of fuel. :nuts:


in all my years of having a haltech (well, just over one LOL) we never needed to compensate or think about a FPR. if you have a aftermareket chip, they can effectively add extra fuel pressure to your lines. thats what chips are for.

$400+ for a rpw FPR is silly when you have a greddy or simular. :nuts:


Ben.

driver
05-06-2004, 12:39 PM
Can someone clarrify this....

It's my understanding, that a FPR just ensures the that fuel line is always at the correct pressure. In doing so, it's not suppose to increase fuel flow/usage either.

Now, if a computer chip was to do the same, how does that work? I'm not a mechnic or the like, but wouldn't the computer try to pump more fuel to the engine to componsate instead?

Is this as efficient?

Does the computer-way just send more fuel to the engine? Does this increase fuel consumption?

BOosted' BOoya
05-06-2004, 01:17 PM
to my understanding.

using a computer (greddy, haltech etc) gives you the POWER to "tune" your car to how you want it, not taking into considerations such things as using ULP apposed to PULP where MMAL had to take those factors into consideration.

with your OEM setup, the injectors will only flow as much as your O2 sensors/ MAP sensors put to gether forumulas. so thus, you may have "flat spots" where the car seems to be "easy" on fuel consumption.

by adding a AMC (aftermarket computer) you can tune your setup so that under accelleration, the injectors open further to allow more fuel in to help against flat spots.
again, under cirten circumstances you open your injectors to allow more fuel in. la la la.

generally, by tuning your car this way you will loose slight fuel efficency. this isnt cos of the AMC, rather, because you want performance and you tune your car for it.

any more questions fire away. or PM me.
Ben.

Redav
06-06-2004, 08:55 PM
generally, by tuning your car this way you will loose slight fuel efficency. this isnt cos of the AMC, rather, because you want performance and you tune your car for it.
Umm... I thought you'd gain power and wouldn't lose on economy as advancing timing increases power a little and more efficient mapping means less fuel used as it's not running as rich. Every chip marketed say more power and more economy and every tuner I've spoken to says that should be the case. They also laugh when people have two tunes where one is for economy and one is for power, (except where there's fuel and boost involved).