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Fuelab afpr

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ishnish

10+ Year Contributor
940
156
Jun 26, 2011
Modesto, California
Hey guys, I am now just starting to make some money and I'm really looking into buying some supporting mods for my car to boost. I want to get an afpr by fuelab I just don't know which one to get. I see there is a 515 series, 525, 535, 545, and a 565 series. Exactly what would make the 565 better than a 515? I don't really know much about the subject so I decided to ask on here. Any info would be appreciated. Thanks!
 
FUELAB® 515/525 Series Fuel Pressure Regulators are designed with performance and flexibility in mind. They accept port style and non-port style union fittings without interference. Several configurations are available, supporting carbureted applications as low as 1 PSID to fuel injected applications up to 125 PSID. The 515 Series Fuel Pressure Regulator has a -6AN return port located on the bottom. The 525 Series has its return port in-line with the inlet port (not on the bottom) which allows for easy installation in extremely tight locations.

FUELAB® 529 Series Electronic Fuel Pressure Regulators - Take the guesswork out of fuel delivery. Set the pressure mechanically like a traditional bypass regulator, then let the electronic regulator's demand based speed control take care of the rest! True pump control is finally achievable and easy to install.


FUELAB® 535/545 Series Fuel Pressure Regulators have all the same great features as our 515/525 series, only smaller and weigh 50% less.

FUELAB® 555 Series Fuel Pressure Regulators are true precision instruments designed to regulate fuel. These units feature an advanced poppet design for smooth regulating capability. We've also incorporated a no-creep soft seat that's methanol and E85 compatible. Adjustable from 4-12 PSI.

FUELAB® 565 Series Fuel Pressure Regulators have all of the same great features as our 515/525 Series except for extreme capacity. Utilizing a massive ½” return orifice and -10AN ports, these regulators hold no bounds. With the bypass capability over 5 GPM at 5 PSI, this new regulator can handle blow through carbureted applications well over 1800 H.P., and for EFI applications using belt driven fuel pumps; even further (with a flattened regulation slope). Regulator comes in four different pressure ranges covering applications between 4 and 80 PSI.
 
Thanks man both of you are awesome. Clipto I appreciate you posting the info up but I already read that LOL I just didn't understand much of it so that's why I asked on here hahaha. Anyways, I'm in the process of blowing all my money on car parts right now (supporting mods for boosting) so I just wanted to make sure I had good products in mind. This will be fun >=)
 
Thanks man both of you are awesome. Clipto I appreciate you posting the info up but I already read that LOL I just didn't understand much of it so that's why I asked on here hahaha. Anyways, I'm in the process of blowing all my money on car parts right now (supporting mods for boosting) so I just wanted to make sure I had good products in mind. This will be fun >=)

No problem man.:thumb: I am running the 515 on my daily driver and the 555 on my cornfed(E85)beast.:thumb:
 
You will be fine running the 515 with E85.If you have dsmlink I would just get 1000cc injectors becuase E85 will change the fuel consumption so the 1000cc's will be about 750cc's if running E85.Unless you making like 500hp on E85 you won't need to worry about anything bigger then 1000cc's.
 
You will be fine running the 515 with E85.If you have dsmlink I would just get 1000cc injectors becuase E85 will change the fuel consumption so the 1000cc's will be about 750cc's if running E85.Unless you making like 500hp on E85 you won't need to worry about anything bigger then 1000cc's.

What about 1250s? If given the opportunity, I will push further than 500. I just wanna be future proof and not have to invest in larger injectors later. I don't mind the extra wait. I'm thinking of 1250s because I hear 1650s give people problems at idle. This I'm not sure of though.
 
1000cc injectors in a DSM on straight E85 delivers 1000/1.33*4*.784/454 = 5.19 lbs/min of fuel at 43 psi base fuel pressure, which will support 53.7 lbs/min of airflow at 90% IDC.

Running 1000s on e85 is highly advised against. Go with some 1200s so you have some safety and don't run out of fuel.
 
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Running 1000s on e85 is highly advised against. Go with some 1200s so you have some safety and don't run out of fuel.

1000cc injectors are plenty for E85 on his 16g.Make sure you get 255 pump if you go E85.I have seen many evo's at the shop with just 1000cc injectors E85 and lots of boost on the stock turbo.IF your sticking with E85 permenitly and don't plan to run pump gas at all then you can go with bigger injectors.Anything bigger then 1000cc injectors on pump gas is ganna suck and idle real bad.
 
This is some really good info and what I was looking for. Thank you! You think 1200s would be enough?

Better yet, go with the high-impedance 1680cc or 2150cc injectors! I run them on my car on both e85 and 93 and I have gotten my car to idle perfectly with DSMLink and my own shoddy (read: non-existent) tuning skills. They should support any reasonable HP goal you may have present or future.

WELL worth the money in my opinion.
 
Better yet, go with the high-impedance 1680cc or 2150cc injectors! I run them on my car on both e85 and 93 and I have gotten my car to idle perfectly with DSMLink and my own shoddy (read: non-existent) tuning skills. They should support any reasonable HP goal you may have present or future.

WELL worth the money in my opinion.

OMG it just keeps going higher hahahah. I really have to look into this now seeing that different people are having different experiences. I don't plan on getting link though I plan on re-flashing my ECU.
 
if your not looking into link e85 is going to be hard to run from what I have read anyways, and if your going with bigger injectors you really need a tuning software imho. I got my car in april and I had link by july, I don't have alot of mods yet but I looked at it as something I knew I would need and I would rather learn to tune before I put all kinds of money into my car and chance messing it up. getting your ecu flashed would be fine but as everyone here knows we are always on the chase for more hp. so why not get something you can constantly make adjustments with then have something set in stone.
 
if your not looking into link e85 is going to be hard to run from what I have read anyways, and if your going with bigger injectors you really need a tuning software imho. I got my car in april and I had link by july, I don't have alot of mods yet but I looked at it as something I knew I would need and I would rather learn to tune before I put all kinds of money into my car and chance messing it up. getting your ecu flashed would be fine but as everyone here knows we are always on the chase for more hp. so why not get something you can constantly make adjustments with then have something set in stone.

+1 link lets you play and learn a whole lot more than a flashed ecm
 
Personally, Most people I know running something as big as a 1250 or larger injector have had to run a dual injector system. One for idle and low end, and a second set to pick up on the top end. Mainly because they have a problem getting the duty cycle low enough at idle to properly idle the car. But that is not going to be done with something like link. You would need a standalone, at the very least an AFC to control a second set of injectors. And that gets costly. But your goals should be able to be reached with some 1200cc injectors and some E85 for fuel. The FPR you will need to do some research on. Call the manufacturer and ask them if it can handle E85. Most of them say in the description what fuels they can handle tho. Just make sure it has a 1:1 ratio for a boosted application.
 
Personally, Most people I know running something as big as a 1250 or larger injector have had to run a dual injector system. One for idle and low end, and a second set to pick up on the top end. Mainly because they have a problem getting the duty cycle low enough at idle to properly idle the car. But that is not going to be done with something like link. You would need a standalone, at the very least an AFC to control a second set of injectors. And that gets costly. But your goals should be able to be reached with some 1200cc injectors and some E85 for fuel. The FPR you will need to do some research on. Call the manufacturer and ask them if it can handle E85. Most of them say in the description what fuels they can handle tho. Just make sure it has a 1:1 ratio for a boosted application.

Hmm not sure about issues with big injectors idling should be able to be fine as I am running 1650's and there not way you should need to worry about dual injector system, unless they are running pump gas with anything bigger then 1000cc injectors there shouldn't be a issue.
 
Hmm not sure about issues with big injectors idling should be able to be fine as I am running 1650's and there not way you should need to worry about dual injector system, unless they are running pump gas with anything bigger then 1000cc injectors there shouldn't be a issue.

Not to be a D bag, but can we get some punctuation? I am so lost in your first line. with 1650's how much of a pain was it getting your duty cycle low enough to idle correctly? Personally I have never run E85 only, but I have run leaded and pump gas on monster injectors and its difficult getting them to idle. My dakota project I had was run on a dual system. Pump gas and E85. Similar to meth injection, the E85 was in my second stage when boost kicked in. The pump gas was run on seimens 1000cc injectors and was a complete bear to get to idle with my cam setup. The E85 was a great addition and allowed me to back down my primary injectors a bit and ran a standalone fuel controller for the E85 and 2nd set of injectors. Which was triggered by WOT and 14psi boost. It cooled down the burn enough to keep me from melting the pistons and made great power.
 
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