View Full Version : FSE Pressure drop
Soonto"HAS"soop
12-01-06, 16:40
Right, I remember it being identified that the FSE regulators can be found to be dropping pressure once they have been warmed/run for a while.
Well I've found that mine starts from cold at 36-37psi static pressure, after a brief 10 minutes at idle, this has dropped to around 30-31psi, and after a longer 45 minute run it will have dropped to around 28-30psi dependent on driving style.
My question is this, as I know that it is dropping over any type of run, should I increase the static pressure to be around 42-44psi when cold so that when it warms up it goes to around 36psi? Or do I leave it as it is, as it seems to be running fine as it is?
Get the stocker back on - your FSE is buggered.
Soonto"HAS"soop
12-01-06, 17:02
I've got an HKS one that will go on with the new fuel rail at the start of Feb, I sold the old standard item, so just wanted to suffice with the FSE for now, need to know if it is best to up the cold static pressure for 2 or 3 weeks. It never drops below the levels stated, so thought it would be safe for a little while.
They really are pants mate :(
as Alex said I would get a stocker until you are ready to put a proper one on.
They really are pants mate :(
as Alex said I would get a stocker until you are ready to put a proper one on.
By that, would you mean the Aeromotive FPR?
By that, would you mean the Aeromotive FPR?
well yeah I like them, but sure there are others better than an FSE too.
Might be able to get you a stocker if you need it. PM me if you do.
well yeah I like them, but sure there are others better than an FSE too.
i spoke to Pete at Thor on the subject of FPR's when i got my car set up, thinking the FSE was crap cos it aint all shiny and anodised and he told me he had not had one go wrong, however he had had 2 aeromotives go pete tong so i think the FSE's get a bad press maybe if they'de made them all shiny or anodised people would think they're great !
Well how about the fact that because of the shape of it, you can't use any decent fittings?
Just this evening I was trying to hook up my new fuel line, but where the 1/8nptf connector is, there's a little ridge just above it (because it's round and the port needs a flat face to mate to the connector) This ridge prevents you from tightening up a 1/8 to -6 adaptor, because it holds the hex part off, so it won't go tight.
Bit difficult to describe, but the end result is you have to turn the hex of the adaptor off, screw it into your -6 line (or the 90deg on mine) and then tighten the whole lot together whilst risking the chance that the adaptor will crack at the root of the 1/8 thread. (Which it is likely to because it's just al.al.)
Another reason to go for something like a aeromotive or even a weldon IMHO.
Well how about the fact that because of the shape of it, you can't use any decent fittings?
Just this evening I was trying to hook up my new fuel line, but where the 1/8nptf connector is, there's a little ridge just above it (because it's round and the port needs a flat face to mate to the connector) This ridge prevents you from tightening up a 1/8 to -6 adaptor, because it holds the hex part off, so it won't go tight.
Bit difficult to describe, but the end result is you have to turn the hex of the adaptor off, screw it into your -6 line (or the 90deg on mine) and then tighten the whole lot together whilst risking the chance that the adaptor will crack at the root of the 1/8 thread. (Which it is likely to because it's just al.al.)
Another reason to go for something like a aeromotive or even a weldon IMHO.
really dont know what your talking about here mate, ????, yeah go for something shiny and red that f**ks up regularly..........that makes sense
Well basically you can't fit any proper fitting to the damn thing. So the only option is to go for something else....
Well basically you can't fit any proper fitting to the damn thing. So the only option is to go for something else....
well this one fit perfect and runs 510 rwhp
You say that but is that a jubilee clip I see on the RHS port?
Well basically you can't fit any proper fitting to the damn thing. So the only option is to go for something else....
i had the same problem when fitting mine few years back:rtfm: but got my local hose company to make up a fitting for me. must say had no problems with the FSE
really dont know what your talking about here mate, ????, yeah go for something shiny and red that f**ks up regularly..........that makes sense
Anyway, what are you on about. Regularly. LOL
he had had 2 aeromotives go pete tong
FSE's get a bad press
Yeah strange how that happens isn't it? :rolleyes:
well spotted, yes it is, as you may be able to tell i am into bling engines which i do all myself, however my blinging does'nt extend to fuel hose i just use bog standard stuff as i consider braided stuff with fancy ends a waste of money, my apologys as i have no experience of fitting this kind of stuff to an FSE
Right, I remember it being identified that the FSE regulators can be found to be dropping pressure once they have been warmed/run for a while.
Well I've found that mine starts from cold at 36-37psi static pressure, after a brief 10 minutes at idle, this has dropped to around 30-31psi, and after a longer 45 minute run it will have dropped to around 28-30psi dependent on driving style.
My question is this, as I know that it is dropping over any type of run, should I increase the static pressure to be around 42-44psi when cold so that when it warms up it goes to around 36psi? Or do I leave it as it is, as it seems to be running fine as it is?
Static pressure is supposed to be set & measured with the pressure hose disconnected, and ideally without the engine running. If you have it connected up the pressure will be less because you're in vacuum. The manifold pressure may change as the engine warms up because the idle does. So the first thing to do is check the pressure with the hose off and engine not running with a wire between the FP and +B terminals of the diagnostics port (that will run the fuel pump) with a warm and cold engine. Stock pressure is 40psi static.
Anyway, what are you on about. Regularly. LOL
Yeah strange how that happens isn't it? :rolleyes:
sorry if you take exception to what i'me saying but i thought forums like this were about sharing experience, as i said Pete at Thor who has probably seen and tuned more supras than anyone on this board told me FSE'S 0 Aeromtives 2 if that does'nt fit in with your way of thinking then fair enough, personally i value and appreciate someone like Pete giving his opinions
well spotted, yes it is, as you may be able to tell i am into bling engines which i do all myself, however my blinging does'nt extend to fuel hose i just use bog standard stuff as i consider braided stuff with fancy ends a waste of money, my apologys as i have no experience of fitting this kind of stuff to an FSE
That was my opinion too until about three days ago when my fuel line split at precisely the location of that jubilee clip (well OK not precisely, it was on the other port of the FSE)
Hence why I've gone full goodridge connectors and braided hose. (All F.O.C. courtesy of work! :whistle: )
Soonto"HAS"soop
13-01-06, 08:29
Static pressure is supposed to be set & measured with the pressure hose disconnected, and ideally without the engine running. If you have it connected up the pressure will be less because you're in vacuum. The manifold pressure may change as the engine warms up because the idle does. So the first thing to do is check the pressure with the hose off and engine not running with a wire between the FP and +B terminals of the diagnostics port (that will run the fuel pump) with a warm and cold engine. Stock pressure is 40psi static.
Thanks for that Si, I'll check it over the weekend using that method! I think I'll stick with it for the next 3 weeks, as it has been fitted for 2 years, and I'll monitor the pressure whilst it's still in place. Then swap it out and bin it....
You gonna add the FSE to your sig :)
Anyway, let's not get worked up over FPRs. Paul Whiffin had at least one FSE go bad, Terry has, I have, Mr. "has" Soop has. That's 4:2 now :) It's not just the reliability of the units that makes me steer clear of them, it's the intent of them as well - they are rising rate, which means they force more fuel out of the injectors than they should deliver. If this is needed, then you've got the wrong sized injectors for the job - if it's not needed, then you are mucking up your fuelling curve and putting extra strain on the fuel pump for no reason :shrug:
That's a very shiny engine bay :cool:
-Ian
Soonto"HAS"soop
13-01-06, 13:56
Anyway, let's not get worked up over FPRs. Paul Whiffin had at least one FSE go bad, Terry has, I have, Mr. "has" Soop has. That's 4:2 now
I'd expect it would be more like 30:2 if people did some more indepth fuel monitoring. I only noticed it now that I have a fuel pressure gauge in the dash. The little gauges that need to be removed are no good.
Also, just for people info, the most pressure that my FSE has gone to has been 68.9psi, so nearly 5bar.
I'd expect it would be more like 30:2 if people did some more indepth fuel monitoring. I only noticed it now that I have a fuel pressure gauge in the dash. The little gauges that need to be removed are no good.
Also, just for people info, the most pressure that my FSE has gone to has been 68.9psi, so nearly 5bar.
Well, as someone already said, the *static* pressure is what your fuel system runs at with the engine switched off but the fuel pump powered up. When you run the car the vacuum in the intake brings the fuel pressure down, and this varies depending on the engine load. My static is 38psi but when the throttle is closed and I'm coasting down from high rpms due to a moment of madness, I'll see 25psi because I'm pulling such a high vacuum.
I'll see 58psi at full boost, that's 1.4bar (20psi) on top of 38psi static.
-Ian
Soonto"HAS"soop
13-01-06, 14:39
Well, as someone already said, the *static* pressure is what your fuel system runs at with the engine switched off but the fuel pump powered up. When you run the car the vacuum in the intake brings the fuel pressure down, and this varies depending on the engine load. My static is 38psi but when the throttle is closed and I'm coasting down from high rpms due to a moment of madness, I'll see 25psi because I'm pulling such a high vacuum.
I'll see 58psi at full boost, that's 1.4bar (20psi) on top of 38psi static.
-Ian
Yes, mine drops to around 26-27 when I let off the gas, but when at idle and cold it reads 36-37psi. When warm and sat at idle the pressure is down to 30-31. I wasn't using figures from under any load other than idle. The pressures stated are even taken around the same rpm, 800-900.
Mmm, that is quite a drop, mine reads about 28psi when idling, 25 when coasting down. Your static pressure must be high for it to read 38psi at idle at any point?
-Ian
i spoke to Pete at Thor on the subject of FPR's when i got my car set up, thinking the FSE was crap cos it aint all shiny and anodised and he told me he had not had one go wrong, however he had had 2 aeromotives go pete tong so i think the FSE's get a bad press maybe if they'de made them all shiny or anodised people would think they're great !
Funny I know guys that have tuned far more cars than Pete and never had an aeromotive issue;)
My biggest issue with FSE's is I and other have had them leak, not the hose, the unit. Unacceptable.
And if you really think that people like myself and Ian dont like FSE's because they aren't shiny or anodised well.....
Strange world eh!:rlol:
Funny I know guys that have tuned far more cars than Pete and never had an aeromotive issue;)
My biggest issue with FSE's is I and other have had them leak, not the hose, the unit. Unacceptable.
And if you really think that people like myself and Ian dont like FSE's because they aren't shiny or anodised well.....
Strange world eh!:rlol:
sorry if i caused any ill feeling Terry but one thing i do like to do is give a balanced opinion, i can (just like yourself) only judge an issue on my personal experience and that is i have had an FSE for 3 years with no problems and OK you may know people that have tuned more supes than Pete (i bet its not many more) and i gave an opinion he expressed to me when i was down there, i think we should just agree to differ and leave it at that
sorry mate, I dont believe it, they must have been fitted incorrectly, loads have been fitted and never seen a problem, but like you say lets leave it.
Hi Terry ..
Can let me know how much cash I owe you for the Aero ? And I'll paypal you dosh to you.
Do you think the gauge is worthwhile too ?
Mark has penciled me in at Phoenix for 21st Jan to fit the FPR & Matt (i think) to fit the rest of the toys :)
Cheers!
Christian.
Hi Terry ..
Can let me know how much cash I owe you for the Aero ? And I'll paypal you dosh to you.
Do you think the gauge is worthwhile too ?
Mark has penciled me in at Phoenix for 21st Jan to fit the FPR & Matt (i think) to fit the rest of the toys :)
Cheers!
Christian.
Lucky i held onto that one and gave it to him for ya LOL:innocent:
Lucky i held onto that one and gave it to him for ya LOL:innocent:
As Mig said all sorted mate.
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