Fuel pumps and Regulators --- 8psi
Thread Starter
On The Tree
Joined: Feb 2009
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From: Rhode Island. (new hampshire)
Fuel pumps and Regulators --- 8psi Hey all...
So i've been building my LS1 turbo setup in my '00 S10.
I have a single in tank walbro 255 pump, and 60# injectors.
Planning on running 8psi. 10psi IF Everything is going ok.
t70 turbo.
I've read mixed messages on needing to run a fuel pressure regulator or not. Some say you don't need it, some say you do... also makes tuning much more difficult, or no?
Next is the fuel pump... Does there need to be a dual pump setup? or will single pump suffice?
Lastly... Do you FI guys all ditch the MAF and go with a MAP sensor?
So i've been building my LS1 turbo setup in my '00 S10.
I have a single in tank walbro 255 pump, and 60# injectors.
Planning on running 8psi. 10psi IF Everything is going ok.
t70 turbo.
I've read mixed messages on needing to run a fuel pressure regulator or not. Some say you don't need it, some say you do... also makes tuning much more difficult, or no?
Next is the fuel pump... Does there need to be a dual pump setup? or will single pump suffice?
Lastly... Do you FI guys all ditch the MAF and go with a MAP sensor?
Since you're doing a custom install...I'd put a Weldon FPR in it with a return line to the tank..really helps a single Walbro. 8-10psi max will be fine with a single Walbro and 60's. At that level of power you could easily keep the maf tune and tweek the PEvsRPM table and be fine. If you crank the boost up...everything, except the Weldon/return, changes.
Thread Starter
On The Tree
Joined: Feb 2009
Posts: 153
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From: Rhode Island. (new hampshire)
What would happen if you run without a 1:1 regulator? can you use the stock regulator at all? I used to tune honda's and suzuki motorcycles, and always used the stop pressure regulators with a MAP sensor.
IMO the only way to go with a boosted car is with a AFPR..... I wont ever run a boosted car without one.
It only cost me a couple hours of my time and a couple hundred bucks to add one to my procharged SS.... its nice to see the FP gauge move the other direction when I stab the throttle. The piece of mind is nice too.
It only cost me a couple hours of my time and a couple hundred bucks to add one to my procharged SS.... its nice to see the FP gauge move the other direction when I stab the throttle. The piece of mind is nice too.
Joined: Jun 2004
Posts: 1,501
Likes: 7
From: Ft. Irwin, California (But Virginia is home)
Hey all...
So i've been building my LS1 turbo setup in my '00 S10.
I have a single in tank walbro 255 pump, and 60# injectors.
Planning on running 8psi. 10psi IF Everything is going ok.
t70 turbo.
I've read mixed messages on needing to run a fuel pressure regulator or not. Some say you don't need it, some say you do... also makes tuning much more difficult, or no?
Next is the fuel pump... Does there need to be a dual pump setup? or will single pump suffice?
Lastly... Do you FI guys all ditch the MAF and go with a MAP sensor?
So i've been building my LS1 turbo setup in my '00 S10.
I have a single in tank walbro 255 pump, and 60# injectors.
Planning on running 8psi. 10psi IF Everything is going ok.
t70 turbo.
I've read mixed messages on needing to run a fuel pressure regulator or not. Some say you don't need it, some say you do... also makes tuning much more difficult, or no?
Next is the fuel pump... Does there need to be a dual pump setup? or will single pump suffice?
Lastly... Do you FI guys all ditch the MAF and go with a MAP sensor?
It's not any harder to tune the car with an aftermarket fuel pressure regulator.
Ditching the MAF for SD is a personal opinion. I always did. I still run SD. The MAF will work fine if it's tuned properly (and not maxing out from the increased airflow). I like the control that 2-bar SD gives me and when I was FI the car made more power under the curve using 2-bar SD.
Thread Starter
On The Tree
Joined: Feb 2009
Posts: 153
Likes: 0
From: Rhode Island. (new hampshire)
NEW IDEA.... also, probably some dumb questions.
I'm running:
Corvette fuel rails and stock Fuel Pressure Regulator.
This has the feed and return line. not single.
I have the Walbro and 60#s.
Running MAF
Do i put the MAF on the inlet of the Turbo???????????????
And with a feed and return line, i'll always have a constant Fuel Pressure. No variable fuel pumps for me like u F body guys...
I'm running:
Corvette fuel rails and stock Fuel Pressure Regulator.
This has the feed and return line. not single.
I have the Walbro and 60#s.
Running MAF
Do i put the MAF on the inlet of the Turbo???????????????
And with a feed and return line, i'll always have a constant Fuel Pressure. No variable fuel pumps for me like u F body guys...
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Brett Foote Thread Starter
On The Tree
Joined: Feb 2009
Posts: 153
Likes: 0
From: Rhode Island. (new hampshire)
Thread Starter
On The Tree
Joined: Feb 2009
Posts: 153
Likes: 0
From: Rhode Island. (new hampshire)
From my fluid dynamics courses that i took in college, and all that other junk... If i have air at 14.7psi (atmospheric) and air at 14.7+8psi (in boost), the flow over the MAF is the same, just a different pressure... which the MAF can't read... It doesn't have a barometer in it, ya know?
The maf on the front of the turbo, however would read ALL air going into the turbo, before it's compressed. Where as a MAF between the TB and turbo would not read the extra boosted air...
Unless i'm an idiot and people have done it this way before.... Hope someone can correct me? or agree with me???
The maf on the front of the turbo, however would read ALL air going into the turbo, before it's compressed. Where as a MAF between the TB and turbo would not read the extra boosted air...
Unless i'm an idiot and people have done it this way before.... Hope someone can correct me? or agree with me???
It is called a MASS air flow sensor because it can determine the air density & calculate the mass of air moving through it. It measures more than velocity & can compensate for the air density. It will work fine on the pressure side & offers less restriction there as well. All LS1 cars with chargers put them right before the throttle plates.
Thread Starter
On The Tree
Joined: Feb 2009
Posts: 153
Likes: 0
From: Rhode Island. (new hampshire)
It is called a MASS air flow sensor because it can determine the air density & calculate the mass of air moving through it. It measures more than velocity & can compensate for the air density. It will work fine on the pressure side & offers less restriction there as well. All LS1 cars with chargers put them right before the throttle plates.
Pic as of 4 weeks ago:
Engine is in...
