I need to know what size line hahn includes with their cartech setup on the ecotec setup. I am switching over to some braided lines so i can connect the FMU to a Aeromotive AFPR and then to my factory fuel line. Im guessing it is -6 AN but im not sure. Anyone have a clue. Im going to be using simple socketless fittings with -6AN female ends to screw onto the AFPR so im guessing i need a -6 AN line. Anyone fill me in? Here is a pic of the AFPR from aeromotive. I was going to buy the one that mounts directly to the fuel rail of the 03's but im going to just use the adapter from the hahn setup that goes down into the fuel rail.
The AFPR has -6AN male inlet and outlet ports and a 1/8 NPT inlet for my fuel pressure sensor. It also has another inlet but i need to plug that with a -6AN plug. It is adjustable from 30-70 psi and works inline.
The Cartech FMU comes with fittings that are 1/8 NPT inlets but have the socketless ends. I just need to know what size fuel line to connect to the socketless fitting.
I want something i can adjust the fuel pressure at idle with becaused right now my BEGI is crap and not working. I know QBE is running one and so was Paco and they are putting down high boost and good numbers. Do i sound correct with all the fittings and such though. I know hahn sends a blue fuel line with the setup i just need to know what size it is.
Hate to say it, but ever think of calling them?
I'm sure they'd be nice enough to share that info with you.
Shifted wrote:Why are you getting an AFPR? The cartech takes care of that in the Hahn setups...
because Hahn (I am not bashing they are a VERY respectable company) decided to eliminate the stock fpr so the cartech adjusts your base pressure but at a sacrifice to running extensiveley high fuel pressure under load.
we tried with the vac line hooked up (base pressure) 30 psi and his atmospheric and boost pressure was at 75 psi
we tried vac line unhooked (atmosperic setting) set that for 40 psi, hooked the vac line back up like it is supposed to be done and he runs 10 psi idle and pre-atmospheric
so in order to use the cartech correctly and still retain all functions I suggested an afpr
LE61T PTE6262 Powered 
You can do both setups as i have but each have their advantages and disadvantages. If you eliminate an adjustable fpr with the begi you cannot use the onset boost setting which raises fuel pressure before actually entering boost due to the fact that the turbo is actually forcing more air in at about 4 in/hg. Begi recommends using this setup due to the fact that many aftermarket turbokits are for cars without boost from the factory. BEGI says that this function helps cure the "lean spot" at about 4in/hg. Currently i run just the begi and am satisfied with the functionality but am leaning towards ems.
*2012 mazdaspeed3*
Well i think my current BEGi is burnt out somehow so i ordered another one from lightning motorsports for like 190 shipped and it will be here tuesday and im going to go from there. As QBE said my fuel pressure is at 10 with the vac line hooked up and the car runs of but really rich under boost which i cant get to go about about 4.5 psi. I think the reason maybe that at 4 psi its 75 psi of fuel pressure and its sacrificing more boost and maybe. Dont quote me on that. Im also running 2" pipe off the turbo to teh intercooler then 2.5 after that and the turbo wont even hit boost till about 3000 rpm which is odd to me. I fudged with teh wastegate actuator both ways and it wont raise the boost at all. Im just gonna get the fuel straightened out and see what happens with the boost. I may have to switch to 2.5" pipe from the turbo to the intercooler to push more air. Any other suggestions on what to do to raise the boost?
