I have a return setup and not deadheaded. I have a major fuel smell from the rails but no leak so im thinking hot fuel. Car starts up super quick anytime. No priming needed.
I believe some adjustments are needed. I had Pete tune my deadhead setup so if you use him too it should be a breeze.Do you need to be re-tuned after going to a deadhead setup? I may do tha tafter I sort out my other issues.
Do you need to be re-tuned after going to a deadhead setup? I may do tha tafter I sort out my other issues.
I wouldn't call hard startup a downside compared to a returnless system because both can have this issue. On a returnless system if you have a PPRV delete you have the same symptom.
I'm using a small diameter silicone hose that goes to the regulator in the fender. Haven't had issues.I would say yes. Are you running a wideband? I would also make sure your fuel pressure is stable at the rails after going deadhead.
Malcolm said he had to do some minor tweaking to his tune even when he would switch the fuel pressure regulator brand.
Just make sure you have enough pump and a good regulator, and you should be good. Also, if you do relocate your regulator to inside of the fender, make sure to use a very small and hard tube for vacuum/boost reference. That way you don’t have any resonance issues. I used hard poly tube that was the same diameter as tubing used on a boost gauge.
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I just got my Fore L1E set up and will be running a deadhead with 465s and stock rails, after reading some of the comments I feel more confident in this set up.
I'm just about to purchase Fore L1E....and also plan on using stock rails....any tips for install? how did you run fuel lines? how did you power the pumps(ie make you own relay setup or FC2/FC3)?
Get the PTFE lines. I ran my lines up the passenger side and mounted the regulator next to the intercooler pump. I didn't want to make my own relays and the FC3 controller is extremely easy to install and set up the pumps. You can use your the FPDM to prime the pump/s like stock or they will continuously run with the key on. I'm using a HOBBS switch so only one pump runs until I get into boost then the other pump turns on. I forget the members name but in the engine and tuning section someone just completed a Fore return system.
edit here is that thread https://www.svtperformance.com/thre...uel-system-for-e85-kb2-8-and-install.1164720/
Not dead head (Engineering design point that is a big no no), No smells, runs strong. All my stuff is custom stuff we designed.
Can you elaborate on "engineering design point that is a big no no'? I have never heard that.
I thought generally, if the fuel pressure regulator fails it's the diagram inside. And if that were to happen, you'd be getting tons of fuel. Not the other way around.This is one of those topics that can be argued for ever. On a deadhead you are putting the FPR before the rails. If the FPR fails it can cut off fuel to the rails and good bye engine. When designing things it is not best practice to add fail points.
That being said thousands of people, even high end race cars run dead head for many many years and have been fine. Chances are you will be fine. I just have a lot more than most in my engine and did not feel safe when I designed my system to do dead head.
I just had a shop put on my system. they did it a little different but i'm glad you mention the pumps will stay on all the time w/ the key on. I was kind of worried about that b/c i had the key on while loading up the perameters to tune and man let me tell you those things buzz loudly and it just keeps going and I had a CEL but it was for the FPDM. reminds me of one of those bug lights my parents had back in the day that hung on a pole while we were out back
I thought generally, if the fuel pressure regulator fails it's the diagram inside. And if that were to happen, you'd be getting tons of fuel. Not the other way around.
Maybe I'm wrong?
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If the regulator fails i don't see the car running unless it fails and begins operating at 30 psi instead of 40 psi or something like that. A total failure and the car isnt going to run. Not worth worrying about.
I suppose it's like any other fuel component that could fail ( fuel pump, injectors, fuel filter, bad fuel, ect) and cause engine failure.Like I said it is rare and most just ignore the chances. If the FPR fails to open at full throttle on a dead head then your engine gets starved. If you run FPR post rails and it gets stuck closed you flood the engine and stall out. If it gets stuck open engine still getting fuel but wont maintain pressure so probably will stall out.
Like I said this can and has been argued for decades. The chances of it happening are very very very slim but still a chance.
Correct except if it gets stuck closed at full throttle then your engine gets starved.