portfuler

[miklaver]

i am running the portfuler on my car and some times i think it gets heat soaked and it has a hard time starting. i was wondering if i could switch the primary injectors into the portfuler and the secondaries in the intake? because at the time i switched the injector harnesses and the car fired up with no problem. i don't think it will hurt but a second opinion does not hurt.

 

[Locke]

Unless the portfueler is (somehow) installed incorrectly, or the controller is damaged, it should have no effect on starting the vehicle. Are your secondaries larger than stock? If so, what is your fuel pressure like?

 

[Shadow98]

I'm sure it can be done, but you'll need to modify a few things and make sure you don't have a fuel leak. But before you go doing all that, check your stock (primary) injectors. Thats the only thing I can think since you mentioned switching around the harness.

 

[BigRand]

my first question is how did you diagnose the starting problem was fuel related, and not spark/vaccume/ or any other electronic related issue?

Give some detailed descriptions of the problem and how it started...might ring a bell with someone who had the same/similar issue

 

[Slippi84]

What size secondaires do you have. Because if your secondairies are like 440cc or something you CAN NOT do that because what will happen is your stock computer will be thinking your running the small stock injectors and you will run rich as hell if say your crusing on the highway not in boost but at like 3-4krpms. When in boost it wouldn't matter but any time off boost you would be rich.

 

[Shadow98]

What size secondaires do you have. Because if your secondairies are like 440cc or something you CAN NOT do that because what will happen is your stock computer will be thinking your running the small stock injectors and you will run rich as hell if say your crusing on the highway not in boost but at like 3-4krpms. When in boost it wouldn't matter but any time off boost you would be rich.

Good point, I didn't even think about that.

 

[miklaver]

sorry for the mix up but what i was saying is to take the secondaries injectors out and put them in where the primaries are and put the primaries in where the secondaries go. that way i don't have to inject fuel under vac. threw the secondarie plate when it is hot.

 

[Slippi84]

sorry for the mix up but what i was saying is to take the secondaries injectors out and put them in where the primaries are and put the primaries in where the secondaries go. that way i don't have to inject fuel under vac. threw the secondarie plate when it is hot.

I still don't see why you think heat is effecting fuel delivery??? You said switch wiring harness so we took that as wiring not the injectors. If it's a problem when starting heat shoulnd't matter because the car is cold anyway but again heat will not affect fuel delivery to do what your saying is happening.

 

[miklaver]

when the car is ran for awhile and it is up to temp. and i shut the car off for say filling the tank with gas or running in to the bank or stopping for a short time, with the car off the thick piece of aluminum i think might get heat soaked and then the primaries have to try to shoot gas past a heat source and it could be evaporating the fuel before ignition in the Cly. I'm running stock primaries and 255 secondaries on a 10.5:1 12psi boosted motor. when car is up and running i have no problems with fuel or ignition so it lead me to believe it might be getting heat soaked so one time when i couldn't get it started i tried the switch and the car started right up. out of a 6 month of running the car i ran into this problem 3 times.

 

[Slippi84]

when the car is ran for awhile and it is up to temp. and i shut the car off for say filling the tank with gas or running in to the bank or stopping for a short time, with the car off the thick piece of aluminum i think might get heat soaked and then the primaries have to try to shoot gas past a heat source and it could be evaporating the fuel before ignition in the Cly. I'm running stock primaries and 255 secondaries on a 10.5:1 12psi boosted motor. when car is up and running i have no problems with fuel or ignition so it lead me to believe it might be getting heat soaked so one time when i couldn't get it started i tried the switch and the car started right up. out of a 6 month of running the car i ran into this problem 3 times.

I understand your logic but the portfueler works on hyabusa's that run at 13k rpms and run much hotter then our cars I doubt that heat is your problem atleast the adapter rail being heat soaked. Not to mention that it would take A LOT of heat to make fuel evaporate. Besides if the fuel was evaporating or turning into a gas state you would have even bigger problems them car stalling as fuel in a gas form is VERY explosive.

 

[miklaver]

i am running stock fuel pressure.3/8 feed line 3/8 return, 1:1 regulator, walbro 255, 1/2 inch bore T fuel rails, 034 fuel controller for secondaries, stock primaries, 255 secondaries. when its hot and it does not want to start you can kind of here like it wants to catch but it wont. if i let it sit for a little while it starts right up. thats why i was thinking it was heat soak issue but i guess it could be a fuel problem. the car runs strong and my fuel trims look great at any load [boosting or cruising].

 

[Shadow98]

Whats your fuel pressure set at? I got mine a little lower than what HRC says to have it at and sometimes at partial throttle it blogs a bit.

 

[Slippi84]

fortfuler? you dumping more gas than the normal injectors some how?

Yeah not fortfuler Portfueler it's a fuel/tuning setup that hahn makes for boosted setup that uses a second rail style setup with secondairy boost only injectors that provide the needed fuel to support more air then the stockers alone can handle.

 

[4UH8ERS]

Yeah not fortfuler Portfueler it's a fuel/tuning setup that hahn makes for boosted setup that uses a second rail style setup with secondairy boost only injectors that provide the needed fuel to support more air then the stockers alone can handle.

HEHE fortfueler!!. Thanks Slippi for clearing that up some.

Yes, portfuler is just that. The shortest most comprehensive way to describe it would be this: Portfueler uses an intake manifold spacer plate that allows you to incorporate a second set of boost enrichment injectors, which are tunable by boost and rpm variables.

To the OP: No, do not try swapping the injectors or the harnesses by any means. Have you even felt the plate after driving it really doesn't get that hot. If you think your problem is heat related then you might want to check a couple places that are more likely effected by heat. Your starter? due to manifold and downpipe could be getting very hot and starting to fail. Also your coil pack and wires could be effected.

 

[Shadow98]

oh nice is it better than putting bigger injectors?

It's all a matter of opinion. Both methods (Portfueler or MSnS) get the job done, but MSnS can do a lot more things and run higher boost if you have the proper mods.

 

[Slippi84]

Listen MS sounds crazy good but odn't let these guys fool you or make you feel bad for going with a portfueler setup over it because I will tell you that I am good with wiring and following diagrams and stuff and MS is not for everyone. Picture AEM EMS without any kind of harness where you had to wire from scratch and a less user friendly tuning software based setup and you get MS so it's not easy by any means but if your good or know somoene who is it can be a end to all tuning devices for your 420a.

 

[miklaver]

i was thinking like the old school small block when they would get hot it would get vapor locked from heat and have a hard time starting i will look at the ignition end and take a little more time and go through my fuel set up again. thanks

 

[Slippi84]

i was thinking like the old school small block when they would get hot it would get vapor locked from heat and have a hard time starting i will look at the ignition end and take a little more time and go through my fuel set up again. thanks

CARBS

 

[Shadow98]

Listen MS sounds crazy good but odn't let these guys fool you or make you feel bad for going with a portfueler setup over it because I will tell you that I am good with wiring and following diagrams and stuff and MS is not for everyone. Picture AEM EMS without any kind of harness where you had to wire from scratch and a less user friendly tuning software based setup and you get MS so it's not easy by any means but if your good or know somoene who is it can be a end to all tuning devices for your 420a.

I'm not trying to convice him to go with MSnS... After all, i'm using the Portfueler and loving it.

 

[Slippi84]

I'm not trying to convice him to go with MSnS... After all, i'm using the Portfueler and loving it.

Oh I got ya that's why I said the guy sI wasn't refferinug to you directly.

 

[Shadow98]

Oh I got ya that's why I said the guy sI wasn't refferinug to you directly.

Looks like your spelling is a good as mine, .