ok so i'm getting the itch to pulley down again but I am already pushing it for fuel so I think I'm going to go with zzp's BRFPS (boost reference fuel pressure system). I was wondering if anyone has tried it or how far I could drop the pulley after?

 

buummpp

 

Switch to premium pump gas or 100 octane unleaded race gas then pulley down you wont have to push out as much fuel if you switch from e85 and you may possibly want to go with a single pass or dual pass with option b setup.

 

switch to premium fuel and lose a ton a power? no way.


i am not familiar with how zzp's kit works exactly but ott's return style kit is tried and proven. they are also releasing their new return style kit which is going to be very affordable

 

on zzp's site the full return system will be an option but it says "There are no benefits performance wise to doing this" so I am thinking why spend double the price on ottp's kit if there is no benefit?

 

The benefit is reliability and consistency. All cylinders should be getting equal fuel as opposed to the stock returnless style system. OTTP's is only like ~$375 and it is available now.

 

ryan@zzp runs a custom return style kit making 586whp. just sayin'

 

There is plenty of benefits for it.... no number 4 starvation... plus with E85 you need a helluva lot more fuel than with pump gas.


OTTP's kit is tried and proven on a ton of cars... all making well over 350+ whp... and all still driving!

 

hey I am just repeating what is directly on their site. just doesn't seem logical if there is no benefit to spend even more money i'm sure almost everyone knows what i mean there. plus I like zzp better then ottp I have had problems with ottp in the past and I would rather just avoid another problem so I will stick to what has never failed me which is zzp.

 

Several people have listed the benefits. You won't get more 'performance' out of a properly fueled setup by using another proper fuel setup. You can however get increased reliablility out of the system however if one is able to provide a more constant flow. There are lots of things that will 'work' and lots of things that are 'safer'. My votes on the return style.

 

i'm just saying what i saw on ryans race car right in front of me

 

I was just curious to my understanding the only difference is that the fuel returns the biggest improvement is that the fuel psi is increased which both do so this is why I don't understand what the difference is and was hoping for someone to shed some light.

 

Just go brfps

 

You have to hook it up like option 2 and its the same thing as a rsfs, just doesnt return the fuel.

 

yea kinda figured I mean if the return was better in any way I think zzp would say so I mean its more money and in turn more profit for them

 

I think im going to try it and if I dont like it just buy the extra fuel line and make it into a return style. Its not like I am going to need tons more of fuel. Im in the same boat as you. I just want to run a 2.7 or 2.75" and be able to rev to 7200.

 

yup I know exactly what you mean it feels so wrong to shift when it is still pulling so hard. I want to run the 2.7. I'm going to try the brfps as well thanks for the help to man

 

ive got it going in this week coming up.... you can run it more than one way, just have to tune differently for each setup

 

In option 1 I still don't understand why you wouldn't have to tune for it that way?

 

I think its because the ve table doesnt support fuel after 17psi. This is why people use the maf scale after that.

 

Gonna bump this. Any of you guys run the BRFS yet? How you like it?

 

Its not on their website anymore. I am not forsure why though.

 

It's on there, if you search for it. Says out of stock but you can still order it.

 

oh i guess i didnt search for it. It just wasnt were it normally was.

 

Unless you can prove this you need to stop posting it. It is just a theory.

I think the problem with old #4 is cooling related which was one of changes made with the Gen II ecotec block.

It seems like #1 likes to go first on the LNF with an entirely different fuel system but what do I know?

<sarcasm>
#1 must be getting starved of fuel!
</sarcasm>

Oh. And here is a good thread.

http://www.ionforums.com/forums/perf...s-vs-rsfs.html