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Old 12-09-2015, 11:26 PM   #8551
morrocco88
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I have an 05' WRX swap, so it's the 2.0L manifold/rails. Is the factory regulator the limiting factor? Could I run a little more power if I go stock rails/lines with an aftermarket regulator?

Is the DW300 not a reliable pump, or does it just not flow enough?
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Old 12-09-2015, 11:35 PM   #8552
yamahaSHO
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The regulator can handle that pump just fine.
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Old 12-10-2015, 07:59 AM   #8553
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Quote:
Originally Posted by morrocco88 View Post
I have an 05' WRX swap, so it's the 2.0L manifold/rails. Is the factory regulator the limiting factor? Could I run a little more power if I go stock rails/lines with an aftermarket regulator?

Is the DW300 not a reliable pump, or does it just not flow enough?
A factory 2.0 regulator is fine. You could run an aftermarket one and increase pressure, along with a hardwired pump, but your 1300's *should* be good for a safe 550 with ethanol on a dynojet. That is serious headroom over your 400 goal.

I trust walboro makes a superior product compared to DW.
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Old 12-10-2015, 01:40 PM   #8554
morrocco88
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Thanks! Exactly the info I was looking for.

So if I just want a solid 400hp/400tq, I don't have to hardwire the pump, and just let the fuel pump controller do its thing?

So it looks like the plan is to leave stock rails, lines, regulator, and just add the ID1300's and drop in a big Walbro. And with that I might have a little headroom for a hair more? Sorry for all the questions.

I'm getting ready to drop in my 2.3 Destroker with custom Piper cams, and might stick with the BW S256, or go with a smaller EFR

Thanks for all the help!
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Old 12-10-2015, 01:53 PM   #8555
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I am running a 2.0 with 1k's and a 255. With a 20g and e85, my duty cycles at 12.0afr are around 90% at 7k in 4th gear on a 2004 6 speed. Most people would agree that is around 400whp on a dynojet.

1300's afford 30% more than 1000's. I know you have a better breathing motor and larger turbo, so I know you are capable of a lot more power.

Basic math says 400x1.3 = 520. It is not perfect, but it is a decent place to start.
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Old 12-11-2015, 11:44 AM   #8556
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Quote:
Originally Posted by morrocco88 View Post
Thanks! Exactly the info I was looking for.

So if I just want a solid 400hp/400tq, I don't have to hardwire the pump, and just let the fuel pump controller do its thing?

So it looks like the plan is to leave stock rails, lines, regulator, and just add the ID1300's and drop in a big Walbro. And with that I might have a little headroom for a hair more? Sorry for all the questions.

I'm getting ready to drop in my 2.3 Destroker with custom Piper cams, and might stick with the BW S256, or go with a smaller EFR

Thanks for all the help!
You will be good. I maxed the 1300s at around 560hp. Double walbro 255 just rails and regulator at 50 base. Trapped 130 in the 1/4 mile, for reference.
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Old 12-11-2015, 02:34 PM   #8557
morrocco88
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Thanks for the info!

I think I'm going to run an aftermarket regulator so I can adjust base pressure if needed.

It looks like the Walbro 450 is not a direct fit, and now I'm reading about all these heat issues from current draw, heating up the fuel etc., and some people hard wire, and others don't.
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Old 12-11-2015, 02:36 PM   #8558
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You can only take adjusting the base fuel pressure so far if you don't back it up with a good fuel system.

I've been running a hardwired 450 for a couple years and though I haven't checked for "heat issues", I also haven't had a reason to.
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Old 12-11-2015, 03:05 PM   #8559
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Quote:
Originally Posted by morrocco88 View Post
Thanks for the info!

I think I'm going to run an aftermarket regulator so I can adjust base pressure if needed.

It looks like the Walbro 450 is not a direct fit, and now I'm reading about all these heat issues from current draw, heating up the fuel etc., and some people hard wire, and others don't.
still at it i see. i pretty much used your old thread for my emanage project. im still using an emange, even for flex fuel. But in process of switching over to a 02/03 16bit ecu and running carberry's SD/FF rom
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Old 12-11-2015, 05:36 PM   #8560
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Hardwire any aftermarket pump to use full benefits of it and save the hassle of a burn electric cycle regulator.
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Old 12-11-2015, 07:27 PM   #8561
morrocco88
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Quote:
Originally Posted by yamahaSHO View Post
You can only take adjusting the base fuel pressure so far if you don't back it up with a good fuel system.

I've been running a hardwired 450 for a couple years and though I haven't checked for "heat issues", I also haven't had a reason to.
I know you're right. I'm just trying to be able to do this in stages, so I don't blow a bunch of coin on this right now. If I really want to make more power on E85, I'll upgrade the rest of the fuel system with Radium rails, pulse dampers, lines etc. I'm just trying to get 400hp/tq with flex fuel setup on my LinkG4. I did some trading for a brand new set of ID1300's, so that's why I'm looking into this. I already have a Aquamist HFS6, and could just stick with that, but I really want flex fuel.

Quote:
Originally Posted by no694terry View Post
still at it i see. i pretty much used your old thread for my emanage project. im still using an emange, even for flex fuel. But in process of switching over to a 02/03 16bit ecu and running carberry's SD/FF rom
Haha! Glad you found that useful. I've been tinkering with this Legacy since I got it back in 2006 bone stock with an Automatic tranny LOL. Now it's got a full v8 sti drivetrain and tons of custom stuff done.

Quote:
Originally Posted by gaby View Post
Hardwire any aftermarket pump to use full benefits of it and save the hassle of a burn electric cycle regulator.
I assume you mean the Fuel Pump Controller? I'm definitely just going to hard wire it.
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Old 12-11-2015, 07:45 PM   #8562
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1300's and a hardwired pump will be maxed at 600# on a dynojet at #45 base pressure.

Get ready for 30#.

Last edited by Zee Biker; 12-14-2015 at 05:22 PM.
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Old 12-11-2015, 08:11 PM   #8563
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You guys probably already know this, but some of us successfully do a hybrid hardwire of sorts. We hardwire the hot side the fuelpump (with a relay energized by the origional hot lead) and run an extra chassis ground to the ground wire on the fuel pump controller. This way you still get pwm (pulse width modulation) in the ground side, which effectively controls the pump, and doesn't run it wide open all of the time.
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Old 12-12-2015, 07:17 AM   #8564
no694terry
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so ethanol production is my only concern in the upcoming election
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Old 12-12-2015, 12:22 PM   #8565
gaby
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Quote:
Originally Posted by morrocco88 View Post
I know you're right. I'm just trying to be able to do this in stages, so I don't blow a bunch of coin on this right now. If I really want to make more power on E85, I'll upgrade the rest of the fuel system with Radium rails, pulse dampers, lines etc. I'm just trying to get 400hp/tq with flex fuel setup on my LinkG4. I did some trading for a brand new set of ID1300's, so that's why I'm looking into this. I already have a Aquamist HFS6, and could just stick with that, but I really want flex fuel.


Haha! Glad you found that useful. I've been tinkering with this Legacy since I got it back in 2006 bone stock with an Automatic tranny LOL. Now it's got a full v8 sti drivetrain and tons of custom stuff done.



I assume you mean the Fuel Pump Controller? I'm definitely just going to hard wire it.
Yes, fuel pump controller. Had to many jack Daniels when I wrote it.
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Old 12-12-2015, 12:25 PM   #8566
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Quote:
Originally Posted by dlapham View Post
You guys probably already know this, but some of us successfully do a hybrid hardwire of sorts. We hardwire the hot side the fuelpump (with a relay energized by the origional hot lead) and run an extra chassis ground to the ground wire on the fuel pump controller. This way you still get pwm (pulse width modulation) in the ground side, which effectively controls the pump, and doesn't run it wide open all of the time.
Can you draw a diagram? I believe this is how I have one of my fuel pumps back in the day but the controller was hot all the time.
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Old 12-12-2015, 01:21 PM   #8567
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Quote:
Originally Posted by gaby View Post
Can you draw a diagram? I believe this is how I have one of my fuel pumps back in the day but the controller was hot all the time.
I am running this setup with a Walbro "485" fuelpump. It had been about a year, and no issues so far.

I got it from a NASIOC thread:


Thread:
http://forums.nasioc.com/forums/show...382384&page=13

Last edited by dlapham; 12-12-2015 at 10:54 PM.
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Old 12-13-2015, 12:07 AM   #8568
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Oh nice. I did not have the extra ground.
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Old 12-14-2015, 01:24 PM   #8569
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#6 says pump power but line shows pump ground?
And diagram shows #5 going to two chassis grounds?

The rest of it makes sense.
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Old 12-14-2015, 03:12 PM   #8570
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lovely schematic. I'm gonna be 16bit swapping my SF here shortly. maybe i should hardwire my 255 like above. goals around 400wtq
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Old 12-14-2015, 03:52 PM   #8571
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Old 12-14-2015, 09:11 PM   #8572
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That's it?
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Old 12-15-2015, 07:24 AM   #8573
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I got 18mpg stock on 87 octane with a n/a 2.5 making 165 at the crank. So i call it a win.
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Old 12-15-2015, 09:21 AM   #8574
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EDIT: Found the answer to my question 3 pages back. Should have searched lol

Last edited by Zombie Panda; 12-15-2015 at 09:27 AM.
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Old 12-15-2015, 09:57 PM   #8575
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