Hi all
I have bought a 290l fuel pump from scoobyworx and after some reading I believe the standard fpr is not suitable as this will not return the fuel back to tank and cause over fueling issues.
Car is a v3 WRX Type RA with performance panel filter and 3inch sports cat back zorst,(standard yellow 440 injectors).As I intend to up the power in the future with the help of an ESL daughterboard this is why I went for the 290l,plus it wasn't much more cash than the 255l
I was going to buy an aftermarket fpr as I think this is my only option,then I saw this ad on SN http://dccdpro.com/zcart/index.php?m...FfOhtAodpzUAuQ

Would this do the same as a fpr? Is there any other options I can consider?
Cheers Rich

 

it is always best if your thinking of upin your power is to run a good frp with gauge

 

Thanks. I was considering fitting the new pump now as my standard pump is the original one and is starting to sound a bit noisy. Would you say fitting the 290l without an aftermarket fpr is a bad idea?

 

Em no.Untill remap stay on OEM fpr.

 

I've bought the 255 pump from scoobyworx too for my T2000. I didn't take the 290 as I'll not be going near 350bhp any time soon. I'm using standard injectors and TD04 turbo as well but I have ESL. I bought it as a service item really as the car still has the factory pump which is nearly 18 years old now. Are you saying the higher capacity pumps cause fuel return problems?

 

No.Fuel return is up to fpr and not the pump it self.

 

From the reading up I have being doing,the standard oem fpr can't cope with a higher capacity fuel pump and can cause over fueling issues. This is why I'm asking the question before I fit mine. Someone might correct me tho if I'm wrong?

 

I understand that, I'm just curious as to how the higher flow from the pump would cause over fuelling and return problems when it's only the FPR that can affect the injected quantity if the pressure is changed.

 

If I keep the fpr set low so my injectors are running the same duty as they are now then why would I need a remap when fitting a fpr?

 

My point exactly!

 

Aftermarket FPRs are manual set at wanted pressure so yes if you buy aftermarket and setnit to OEM level it will be ok,but it will work the same with OEM unit.When remaped you will probably want more boost and OEM fpr will have to be changed.

So when changing to better fuel pump new fpr is not a must buy item.

 

Still doesn't answer if the oem fpr can cope with a high capacity fuel pump,unless my research is wrong? Everything I have read so far says it can cause over fueling

 

Also I have seen info that says that remapping will cure the over fueling but I don't have the luxury of the ESL until my piggy bank is full

 

I didnt have any issues till now on both gc8 and v9 STI.

 

Once I get my new pump I'll tell you what happens. I have ESL and a wideband so I'll do some fuel logs with the standard pump and some with the new pump without adjusting anything and using the factory FPR.

 

Cheers beliblisk. I might just fit the pump with the standard fpr and see how it goes. It won't be until midweek so will update thus thread to how it's running on the 290l pump and oem FRP

 

Just fit it, that's what I'm doing.

 

Ill go on 340 on OEM fpr next month and ill run it for whole runin period for new engine.
I think you will be ok

 

Would I be right to think there's no need for an aftermarket FPR unless you've run out of injector duty? (which I doubt most of us would).

 

Cheers pal,wideband and AFR gauge are on my list of things I have to buy before ESL. I will wait to see what results you get before fitting my pump

 

No problem matey, I'm curious now too. I thought it would simply be plug and play!

 

Exactly.When you wanna feed 350 bhp on 440ccs you just turn up the pressure .Once i fit new fpr ill go with parallel fuel lines as well.

 

Oh and getting a wideband is a must for when you get ESL installed. Self mapping would be impossible without it. I literally stole a brand new Zeitronix ZT-2 kit with the LCD display on eBay including genuine optional sensors etc for £100! I highly recommend it from my experience using it.

 

Sweet, thanks. Would 440s be of any benefit to my car that's still using a standard TD04 or would they be a waste of time? Like I said before, I have ESL and have been self mapping for most of a year now.

 

Absolute bargain mate,I'm looking to get the Innovate LC-2 Wideband at around £150 so this will be the last piece of the jigsaw before I get the ESL an am on the road to self mapping

 

Or self destruction lol!

 

Lol either way it will be fun getting there

 

Td04 wont push more than 280bhp so you are good with what you have.If they are yellow they are 440ccs.

 

I'm almost sure they are grey (380cc?). I want to go to a TD05 or maybe one of the VF turbos depending on cash of course.

 

440s are 40£ so it shouldnt be a problem:P