After market Fuel Regulator necessary?

[armereth]

Hi,I am running on after market fuel regulator now but at the same time the standard fuel regulator is still in place at the fuel rail. Therefore does is really helps because whatever pressure that I set at the after market FR will surely be readjusted by the standard FR at the rail isn't it? So it redundant isnt it? Or do we need 2 FR?Whereas for other cars like proton, toyota etc the aftermarket FR actually replaces the standard one. Any comments?Cheers ARms

 

[Jipster]

I would think that the aftermarket FPR would replace the existing stock regulator.....

 

[kevster30]

I assume that you are reffering to the ADJUSTABLE fuel regulators that are available in the market.

TO answer your question, these work very well if your engine has been heavily modded. These regulators are usually used when you move to larger injector rates or have increased your cubic capacity. They are there to ensure that there is enough fuel pressurised on you fuel rail to meet with the added demands.

On a standard car, you will feel a slight improvement in throttle response and that's all. Be warned that they are not easy to set-up, wrong settings will cause loss of power and increased fuel consumption.

The standard regulator works fine, leave it well alone as it has been optimally configured to work on the factory set-up.

Hope this helps.

 

[armereth]

Thanks kev,

Yes. It is adjustable fuel regulator. My car need it because it is modded. As for the setting, isnt it just simply increasing and reducing the pressure? Got to know because I intend to change it cause the presure gauge is not showing a rise. Running on static pressure now.

Jips,

Not my car because E34 FR is attached to the fuel rail. So after market one cannot fit in (I was told).

Thanks

 

[kevster30]

Of course the aftermarket ones can fit as the usually come with an adapter that will fit to the fuel rail.

On the adjustment side, consult Mr. TeeJay for a detailed description of the process. It is not as simple as inceasing/decreasing

 

[ALBundy]

Armereth, I have seen how it was done on the E34. Remove the internal parts inside the original regulator, and then adjust the external FPR. I suppose the adjustment thingy will be trial and error and butt dynos will be used.

Have you changed the the FPR to the 5.0 bar type? The ori is 3.5 bar. I believe once you have changed to the 5.0 bar regulator which looks exactly like the ori and hence fit into the fuel rail perfectly, all you then need is a ECU remap (to readjust the injector pulse rate and duration), either superchip, unichip or a SMT6 will do the trick. This will more or less ensure there will be no fuel starvation and your engine should be running in a more or less optimum condition

Rgds

 

[Jipster]

Dudes.... I have read somewhere that adjustable FPRs also help in older (but stock) engines where the extra flow helps. 'Could be wrong though....

 

[ALBundy]

The extra flow will cause the engine to run richer, great for low end pull, but fuel consumption will be severely affected

 

[armereth]

Originally posted by ALBundy@Nov 9 2005, 11:39 AM

Have you changed the the FPR to the 5.0 bar type? The ori is 3.5 bar. I believe once you have changed to the 5.0 bar regulator which looks exactly like the ori and hence fit into the fuel rail perfectly, all you then need is a ECU remap (to readjust the injector pulse rate and duration), either superchip, unichip or a SMT6 will do the trick. This will more or less ensure there will be no fuel starvation and your engine should be running in a more or less optimum condition

Rgds

Albundy,

Thanks

Yes. Mine is 5.0 bar. Saw it when I did the injector flush last time. No chipping was done as far as I know. The previous owner tried 5 type of chips and none fits due to some safety setting built into the ECU. Only 1 guy can do it and its in Johor. But anyway, it has a HIOP thingy under the glove compartment which I am not sure what is it for. It is some kind of chip? Can we use it to tune?

And do I actually need the adjustable FPR? Or is the 5.0 bar FR is big enough to take the adjusted FR pressure set at the adjustable FPR?

Very confused now.


Kev,

Nope. Mine does not have the adapter. I actually has 5.0 bar FR fitted.

 

[ALBundy]

Armereth, I suggest that you do a dyno with your present set-up. Make sure they provide the AFM (air fuel mixture) readings as well. From there, you should be able to tell whether the current mapping is providing enough fuel. That would be the first thing I do. Now, its like shooting in the dark

I think the shop in JB is Visworks

 

[Jipster]

Shite! That looks like a serious bit of kit there :yes:

 

[armereth]

Originally posted by ALBundy@Nov 9 2005, 12:49 PM
Armereth, I suggest that you do a dyno with your present set-up. Make sure they provide the AFM (air fuel mixture) readings as well. From there, you should be able to tell whether the current mapping is providing enough fuel. That would be the first thing I do. Now, its like shooting in the dark

I think the shop in JB is Visworks

Albundy,

Actually last saturday, I noticed that the car losses power and jerk when I step on it. The rpm just dont go up fast like it you use to do. To make a long story short, I checked the gauge meter on the FR and realised that it does move when I revved it. Usually it goes to about 3.5 bar max. So I suspect the FR is the problem. Got Bavarian Auto to look at it and they also suspect the FR. I have seen this particular FR for sale in N1 Racing in Sunway. So I am thinking of going over there tonite to get them to check whether is it working or not. And they can also tune it since they have dyno. But before that, I am trying to find out is there actually a need for the AFPR since mine stock is already 5.0bar. That why I am writting in to ask.

Cheers
ARms

 

[ALBundy]

Armereth, it all depends on whether your ECU has been remapped. I have seen supercharged E34s running fine without an adjustable FPR but with a remapped ECU of course. Why dun you run it without the adjustable FPR and do a dyno? If the AFM ratio is around 12 to 13 (depending on the RPM), you are quite alright.

 

[Alvin]

If you ask me, chuck the adjustable FR. You do not need it. The S50/S52 also 3.5 bar. Only the M5's using the 5bar if i'm mistaken but can check the ETK or TIS. If you are force inducing it then maybe 5 bar. Other than that its of no use & just wasting petrol.

Whats your mods?

 

[armereth]

Originally posted by ALBundy@Nov 9 2005, 03:40 PM
Armereth, it all depends on whether your ECU has been remapped. I have seen supercharged E34s running fine without an adjustable FPR but with a remapped ECU of course. Why dun you run it without the adjustable FPR and do a dyno? If the AFM ratio is around 12 to 13 (depending on the RPM), you are quite alright.

I doubt my ECU has been remapped because now with the Adj FR not working, the power sucks big time. So my choice now is either remap ECU or fix/change the the Adj FR. I think I better go for the latter since it using it all this while. Wanne come along to N1 today? Reaching there around 6.15pm

 

[armereth]

Originally posted by Alvin@Nov 9 2005, 05:29 PM
If you ask me, chuck the adjustable FR. You do not need it. The S50/S52 also 3.5 bar. Only the M5's using the 5bar if i'm mistaken but can check the ETK or TIS. If you are force inducing it then maybe 5 bar. Other than that its of no use & just wasting petrol.

Whats your mods?

Yes. Force induction. Thats why I think the previous owner put in 5 bar and adj FR. Now with the Adj FR not working, the power sucks. Cannot even overtake a Waja.

 

[Alvin]

We have tried SC the S52 with only 5bar. I suggest you try to remove the Adj FR & use the ori 5bar only. then drive it for a couple of days. You should be back to ori. With the Adj FR the max will still be 5bar due to the ori is still there.
But i'm no expert so you can check with others.

 

[Zoggee]

I think Amereth need to go Dyno tune his car...its not only the FR contributing to lag of power...


Fabian...come la.I need you to help me oso ma.. I wanna de Tune my car liao. :wink:

 

[armereth]

Hi All,

Went to N1 Racing and LinksPower last nite. Both are surprised that I am running 2 regulators. Anyway, LinksPower tested the AdjFR and said it is working. Only the gauge is faulty. And the jerking could be due to misfiring. Need to make appointment next 2 weeks to let them check again. N1 Racing didn't want to look at my car cause there are afraid of continental car. They not even interested to sell one to me. Sigh... Looks like they are Jap and proton kaki only. However they did ask me to check fuel Filter. Anyone has any idea how?

Then later I met up with this Zadi guy from ZeroToHundred forum that is sellings some cheap AdjFR. Got him to take a look and said that the Adj FR is faulty. Asked me changed but can only do it next week.

Looks like for now the best way to chuck away the AdjFR and use ori FR only but not sure how? I know how connect the fuel line with connector but not sure where to connect the vaccum hose. Any idea?

Thanks

 

[pussy]

my dear friend.. please dun do anything to the car... your car is fine.. is just something not right... dun go changing to this and that just cos you think it's faulty...

have check if your TPS is faulty?

told you to take it back to the original shop at jalan ipoh..

Alvin can help...