i been doing alot of reading up on what they are and how they work and for some reason it seems like its not the choice of most 420a'ers? this puzzles me because to me it seems like the most fool proof way of tunning your car and insuring its geting the proper amount of fuel at the proper time. It seems from the posts ive read that most people have alot of trouble with them so im bringing it to this section for discussion. to me even if your running low boost5-7 lbs or even high boost 18-20+ lbs, this device can be programed to give your car the proper amount of air to fuel ratio at the proper time. it actually creates a fuel curve which the fmu dosent its just a straight line, basically normal and pour. my questions are many cause im kinda stuck at the route i wanna take, im tired of my fmu and was thinking of going with the sfmu but was told it to has a straight line fuel curve. no im looking at the safc? maybe im way off here maybe not but basically i wanna be able to turn the boost up when i want to like at the track or to have fun from time to time and still be able to keep the boost down for normal driving around 10psi. problem now is if i go over 10 i get fuel cut bad (stock injectors, fuel rail and fmu) if i got an safc id eliminate the fmu, altogether right? also im begining to read the missing link is junk? can someone just kinda explain to me what i need to do to take my car to the next level? im basically stuck with 10psi being my max and its not even an agressive 10psi cause our injectors dont handle well over 7psi, not to mention fmu crap. i wanna be able to run 8-10 psi all the time with a nice fuel curve, and be able to run it up to 20 psi when i want? sorry if this sounds crazy im just trying to explain the best i can and this fuel issue is getting to me, a shopping list would be nice
thanks in advance
joe

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

I guess i still need to read than cause i was under the impression that an safc would eliminate the fmu and the missing link and the safc would need like a 3bar map sensor or something? so if you need an sfmu with the safc than i guess i can progress as planed by upgrading my fmu to an sfmu and getting bigger injectors and a bigger rail. i hear what your saying about the msns but how will the portafueler work with low boost? if i just changed to a bigger rail and some 310cc and an fmu id be good up till about 14psi, id still keep my good idle and car would run good under low bost operation. my biggest thing is i dont wanna be stuck having to run 18 psi all the time as a daily driver or maybe i do and i just dont know it yet? i just wanna make sure my car still idles correctly and doesnt drink gas like my explorer does.

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

First, you dont need a bigger fuel rail. The stock one will flow just fine. The only real reason to get a different rail is if you want to go to larger -6 fuel lines then a rail from rossracingmachines.com worked out good for me.


The portfueler works great at low boost because it senses boost and rpm and adds fuel through the additional injectors based on what its fuel map says.
When not in boost the car runs just off the stock injectors so you run the oem fuel pressure at idle.

This fact alone makes it better than a sfmu since you dont have to lower your fuel pressure to accomodate the larger injectors.

Plus with the 1:1 FPR even at 25 psi of boost your fuel pressure is only 25 psi over the base setting so no insane amount pushing against the fuel lines.

1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions

As far as I'm concerned, the only thing an SAFC is good for is to pull fuel throughout the rpms while using large injectors.

I'm using 450's and at low FP i'm still running FUCKING rich. I'm awaiting the delivery of my safc2 so that I can pull fuel at idle and make it like it's got stock injectors untill I step on the pedal.

I still need the SFMU to RAISE the FP under boost, I just need the safc to make the computer think theres not so much air so it doesn't dump all that fuel.

I'm rambling, I just woke up 5 minutes ago

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

ok so now it seems like portafueler is the way to go. whats the difference between the mega squirt and portafueler? sounds like they both kinda do the same thing, what involved with the install? does the whole set up come with everything needed?

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

The megasquirt is a device that controls primary injectors. You upgrade the stock injectors and the MS runs those only. Your stock intake manifold, fuel rail..etc stay in place.

The Portfueler is a piece that installs in between your head and intake manifold. You have a total of 8 injectors in the setup, your 4 stock injectors and then 4 secondary injectors in the PF. Under normal conditions, your ECU controls the stock injectors and the car drives like stock. When boost hits, the PF starts the secondary injectors in addition to the stock 4 to inject more fuel when in boost. It comes plug and play, but also has the capability of being tuned.


Brian

Red 97 Eclipse GS (420a) MTX
Custom Garrett T3 Turbo system
Megasquirt w/52 lb/hr injectors & a Walbro 255
Kicker/Alpine Audio (3 amps, 2 subs)
90 Cav 2.2 TBI auto (winter) <- yeah, it's fast

I personally use the S-AFC and I love it. Since I have big injectors, I can lean out my idle and still have it idle smoothly, not only that, at 20+ psi, I can throw in some extra fuel if I really need to. It is a good device IMO.

You mentioned the ML too, I had 2 and didnt like them, I think they are no good. I use a homemade FCD AND I love that. I made some for some orther memebers and they all say the same thing too.

A S-AFC is just really a piggy back system.

-MIKE-

Stroked 2.2L

Mike
but what happens if you try to run low boost like say 5psi? your big injectors allow it with a good idle still or no? im begining to think the portfueler is exactly what im looking for, i like the fact that it allows the car to do its thing under normal operations and only steps into play when needed. if i get this from what i understand it will replace the fmu and need for a s-afc also i might think of getting one of your homade devices we will see after i see what route i decide to go, to those who are running the portfueler whats your take on it? happy? wish you would have went a better route? or is it the best investment you went with. To me personally at only $299 it seems like the way to go but i wann be sure. thanks

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

I have had my portfueler for 3 months now

the hardest part about the install was removing the intake manifold.

mental note, its easier to go from the bottom.

you also have to grind some metal of the valve cover to allow room for the extra fuel rail. Make sure you torque the bolts from the manifold to the head properly, thats it

so far those are the only gripes i had about it

wiring was a minimum chore. if you have a msd dis 2 you do not need the tach adapter either. the tuning software isnt as high tech as the megasquirt but it gets the job done.

if you already are a stage 2 turbo then just replace the fmu with the afpr and you are good to go.

I idle at 40 psi and under 15 psi of boost my fuel pressure is like 55ish.

Transition to boost is smooth with no bogging or bucking and the best part is after the installation. The car fired right up.

I highly suggest a wideband though to monitor AFR. The megasquirt really needs one to work properly, the PF doesnt but it does help in tuning. Your PF will come tuned to run around 10:1.

hope this helped

1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions

This helped alot, i already had my intake mani out before so i know what i loking at in that department but thanks for the tip, i really think this is what i been looking for, i will be sure to post my results. thanks for your help

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

Where did you see that it was $299?? Last I saw it was in the range of $1,000

-Chris
1999 Eclipse T-GS


2.4 Project is Officially underway

really wow i hope i didnt mis read it? i looked it up on hahns web page a thousand dollars is a bit of a difference but i hope i saw right

98 RS: Mods: Custom Stage 2 Turbo kit , 55mm throttle body, gutted cat, evo cat back exhaust, p/p intake manifold,p/p Head, af-x underdrive pulley, B&M short throw shifter,Built bottom end Je pistons eagle rods 8.8:1 compression.





Status:Up and running again! nice new paint

Custom stage 2 hahn turbo kit
Hahn Super 16g turbo (ceramic coated)
Hahn manifold (ceramic coated)
Hahn Downpipe assembly
Hahn intercooler piping smic
Hahn oil line kit
Type s bov
2G Gsx smic
walbro 255 fuel pump
Synapse missing link
Vortech s-fmu
NGK Bkr7e11 Plugs
A-pillar w/boost, a/f, oil pressure gauges


New Addition: 2007 Eclipse GT 6 speed

'95 GSX - New motor/turbo going in...
'95 TSi AWD - For sale...buy me!
'03.5 MazdaSpeed Protege - Stock daily driver
'97 CBR 600 - Purple is a real man's color

Evo 8 - 12.3@113 circa 2009 (~330whp)
Now with BB Xona Rotor HTZ FP Red and ~450whp
2018 MSM Civic SI Ktuner TSP stage 1 w/ Honda hacked headunit.

its definetly possible that an injector may fail. that is however a chance to take when mods go to this type of level. That is where watching your gauges when you are boosting that hi comes in. AFR and EGT(especially AFR) are a must when you start boosting that much pressure.

yes, the PF is high, I paid like 1100 total for it. IMO it was worth every penny.

1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions

I'm going to use 450's w/ an SFMU Aand SAFC. Its cheap and works well. Mike I'm gonna hit you up for some settings info on the afc once it's installed. lol Or I guess I could search

I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

Just make sure the injectors are the correct impedience.

1996 eclipse GS-T
1968 Ford Mustang
2004 Suzuki GSXR600
2006 Honda CBR1000RR
Decisions Decisions