I know some of you have upgraded the fuel pump with the Walbro unit. Do you guys know the part number for that pump?

SimplyScion (Vito) would proably be the best one to talk to Rollhard. He was one of the pioneers when it came to boosting our engines and I beleive he changed out his fuel pump, but I will search and see if I can help find it for you.

Vito did run the Walbro 255 fp, so he should hopefully rember the model#.

I think its a GS341 or GS344...I forget

I think its a GS341 or GS344...I forget

haha, thanks for all your replies! Atleast now it narrows it down to two part numbers. Let me know if you remember, Ill order it then.

Its definitely the GS341...universal import 255lph fp.

Vito as always you come thru, you da man. :bow:

I still lurk around the xB forums to see whats been going on these days :P
If anyone needs any help feel free to send me a pm

Haha, yes you da man. Thanks man!

wouldnt go as far as to say Im da man lol...but I have been down this road before with the 1nz so I try to help as much as I can...but definitely appreciate the support guys :bow:

wouldnt go as far as to say Im da man lol...but I have been down this road before with the 1nz so I try to help as much as I can...but definitely appreciate the support guys :bow:

you da man if you answer my questions! :P

Well, since you have done all this before. There is a site that sells new injectors for the 2003 Celica GTS. I was wondering if these were a direct bolt on?

Direct drop in to the Perrin rail

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

The Perrin fuel rail converts it to a return style fuel system.

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

The Perrin fuel rail converts it to a return style fuel system.

I had never heard that or read that about the Perrin rail before. Can you please shed some light on how it does? :question:

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

The Perrin fuel rail converts it to a return style fuel system.

I had never heard that or read that about the Perrin rail before. Can you please shed some light on how it does? :question:

http://www.perrinperformance.com/products/scion_xb/fuel_rail.htm

See how its plugged up at the other end? Looks just like a cap/screw. You can run a return line from there.

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

The Perrin fuel rail converts it to a return style fuel system.

I had never heard that or read that about the Perrin rail before. Can you please shed some light on how it does? :question:

http://www.perrinperformance.com/products/scion_xb/fuel_rail.htm

See how its plugged up at the other end? Looks just like a cap/screw. You can run a return line from there.

Ohhh.. I see what you are talking about, I thought i read that it was for somthing else, but I cant remeber what thou. Thankyou sir for the enlightenment.

Direct drop in to the Perrin rail
Thanks for the info, Vito... From my understanding our engines are returnless. What is the best method to convert it into a return-style system and put an FPR on it?

The Perrin fuel rail converts it to a return style fuel system.

I had never heard that or read that about the Perrin rail before. Can you please shed some light on how it does? :question:

http://www.perrinperformance.com/products/scion_xb/fuel_rail.htm

See how its plugged up at the other end? Looks just like a cap/screw. You can run a return line from there.

Ohhh.. I see what you are talking about, I thought i read that it was for somthing else, but I cant remeber what thou. Thankyou sir for the enlightenment.

Haha, no problem buddy. What you would have to do is line coming in, then fuel rail, then you will add a line coming out of the fuel rail to the FPR, then from FPR to back to the fuel tank. There is also a vac line from the fpr to the boost/vac pressure. I know it sounds kinda confusing. The FPR always goes on the return side of the fuel rail because it regulates how much fuel it will allow to "return" to the fuel tank. Of course, you can only have as much pressure as your fuel pump can dish out.

for those that are n/a you can use the rail as well and use that other port to spray some juice into the rail. As far as raising fuel pressure...the in tank regulator will only let you hit about 55 psi without modding it. Without that regulator in place, the fuel pump will not turn on and you will get no fuel. If you can make something to fit in the spot of the regulator with a larger diameter hole than the stock fpr then you can just use the adjustable one to max out your fuel pressure. Also just to give you the heads up, you will hafta modify your sending unit to fit the 255 lph pump in. If you have a dremel you will see where you hafta cut on the bottom. Dont worry about the fuel pump falling out of its spot either because when you put the sending unit back in the bottom of the pump comes close enough to the tank bottom to help hold it in place

It was the juice that I had read went there before, thanks for jogging my memeory.

Rollhard I beleive I rember people having problems with starting(not enough fuel), when they used a return line(not sure if Vito did). Have you read that before and are you concerened about that possibly being an issue?

Im not sure where you heard that before as I have never had one single problem starting the car up...I dont think that you could run into a startup problem unless you have a really bad evap leak. But he should be good to go with the return line if he does everything correctly which I dont doubt that he will, he seems to know his stuff :clap:

Dang it Vito you made me read to ealry in the morning :doh: , but here is what I read. You guys may have ended up determining it was somthing else, but I did remember reading it. :P This quote is from some thread that some guy started, I dont even think he still owns an xB anymore or somthing. :lalala:
http://www.scionlife.com/forums/viewtopic.php?t=89874 Page 4

damn it!
my car wont start! when its cold!
I have to keep on crankin starter and when it finally starts.
I have rev my RPM at 2 for like min.
after that when i rev up high smoke comes out.
I am guessing it's because of the new e-management and since it's not been tuned yet... damn poop suck!
Never going turbo again on any car..
next car is going to be mercede and wont do anything!
i have the same crank issue....it is from the fuel line set up.
it leaks pressure that would normally be held with a normal set up.

the fuel pump does not start pumping till the motor is cranking. takes a few seconds to get full pressure.

no smoke for me though....

yup, the problem Bomex had was his emanage wasnt tuned and was interfering with the stock ECU. As far as Dave goes (dghotlava) he did not have a return line setup in his car. I think with the Power enterprise s/c they give you an upgraded fuel pump and something to go in place of the in tank regulator and he just had to wait a minute for the pressure in the lines to build up and then start the car...they were both different problems unrelated to a return line setup.

Thankyou for clearing that up Vito, another concern for people to boot out the door and not worry about.

Rollhard please disreguard me previous question and concern, for it has been cleared up.

hey when are you getting your car back?? I commend you for being so patient lol I would want my car already but I know it will be worth the wait in the end :love:

hey when are you getting your car back?? I commend you for being so patient lol I would want my car already but I know it will be worth the wait in the end :love:

Disclaimer: Sorry to get of topic Rollhard, but I had to answer Vito's question.

As for my car, lets just say the Transport company has been called, so it is just a matter of days before it will be back in sunny FL. My whole life has been about learning to be patient and this just adds to the learning, but as you stated all good things are worth the wait. Plus Vito, I think you will be pleased with the redesigned setup that they have gone with, you may just buy another xB and sport it yourself. :lalala: When it is back I will be updating my thread, with pics, vids and all that good stuff.

Back on topic.............

cool...good to hear...back on topic ; )

Forgive me if this questions seems stupid (I'm a noob to fuel managment), but what are the benifits/purpose of converting to a return style system?

Fuel return system does just what it says, its a constant flow of fuel from the tank to the rail to the regulator and back to the tank. Black hose is a vacuum line. The bulkhead that you drill into the sending unit is just the drain, so when you attach the bulkhead to the line your all setup for the return.
Hope that helps...if its not clear to you I will try to explain it better.

First of all, on an electronic fuel injected car, as soon as you turn the key to the on position, your fuel pump turns on and you get fuel pressure. It has nothing to do with the actual motor starting. We are not using mechanical fuel pumps anymore people. hehe.

Here is the thing with a return and returnless system. If you want to avoid all the hastles then dont even bother with getting a return type system. All you will need to do is get the correct size injectors/pump combination. With a returnless system, the fuel can only exit from the injectors so if your pump is dishing out too much fuel and your injectors are too large, youll go ____ rich. Now, if you dont want to bother trying to figure out which is the best injector/pump set up, then you can go return type where you let the excess fuel return to the fuel tank.

I dont know why he had start up problems. Im assuming that he got a turbo kit non Greddy. The Greddy kit comes with the Emanage preprogrammed, and Greddy did nothing to alter the 0% throttle fuel which will affect start up.