Need help with fuel system
Thread Starter
Intermediate
Joined: Nov 2009
Posts: 45
Likes: 0
From: Fort Lauderdale Florida
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Now, I belive the issue MUST be in the stock filter/reg. In fact, it was probably the culprit the entire time, but I could not get anyone to verify that.
So (and please chime in here), my next move is to replace the stock filter with a 97 style filter, add a regulator at the end of the stock driver's side fuel rail, and run a braided 5/16" return line and join it back into the stock return line that I have unplugged from the filter. Will this work?
So (and please chime in here), my next move is to replace the stock filter with a 97 style filter, add a regulator at the end of the stock driver's side fuel rail, and run a braided 5/16" return line and join it back into the stock return line that I have unplugged from the filter. Will this work?
Melting Slicks
Joined: Jul 2007
Posts: 2,939
Likes: 7
From: Simpsonville SC
St. Jude Donor '09-'10
Back when I had my stock fuel filter, I never could get my pressure up either. I yanked out ALL of my fuel lines, and reinstalled all -AN6 lines. I do not have ANY pressure problems now.
Drifting
Joined: Mar 2005
Posts: 1,737
Likes: 0
From: Northern VA
Was the wideband showing AFR leaning out? Injector PW maxing? If not, what is the problem?
As long as the drop is repeatable, it can be tuned for.
My point is fuel pressure is not important unless you are not getting enough fuel (i.e. maintaining desired AFR).
As long as the drop is repeatable, it can be tuned for.
My point is fuel pressure is not important unless you are not getting enough fuel (i.e. maintaining desired AFR).
Le Mans Master
Joined: Jul 2005
Posts: 7,121
Likes: 3
From: Shreveport/Bossier Louisiana
St. Jude Donor '08
Now, I belive the issue MUST be in the stock filter/reg. In fact, it was probably the culprit the entire time, but I could not get anyone to verify that.
So (and please chime in here), my next move is to replace the stock filter with a 97 style filter, add a regulator at the end of the stock driver's side fuel rail, and run a braided 5/16" return line and join it back into the stock return line that I have unplugged from the filter. Will this work?
So (and please chime in here), my next move is to replace the stock filter with a 97 style filter, add a regulator at the end of the stock driver's side fuel rail, and run a braided 5/16" return line and join it back into the stock return line that I have unplugged from the filter. Will this work?
Thread Starter
Intermediate
Joined: Nov 2009
Posts: 45
Likes: 0
From: Fort Lauderdale Florida
Regardless of this, I strongly believe that ANY fuel pressure drop in a forced induction system MUST be dealt with. Fuel pressure should be a static value that does not change. Those who run systems that are dropping and have tuned around it, it is just a baindaid. It is not correct.
In a proper fuel system You should have more volume delivered than used. If you are dropping pressure at all, then you do not have adequate volume, PERIOD.
Drifting
Joined: Mar 2005
Posts: 1,737
Likes: 0
From: Northern VA
I have a 2bar map and running full speed density. So I have tuned around the pressure drop for now.
Regardless of this, I strongly believe that ANY fuel pressure drop in a forced induction system MUST be dealt with. Fuel pressure should be a static value that does not change. Those who run systems that are dropping and have tuned around it, it is just a baindaid. It is not correct.
In a proper fuel system You should have more volume delivered than used. If you are dropping pressure at all, then you do not have adequate volume, PERIOD.
Regardless of this, I strongly believe that ANY fuel pressure drop in a forced induction system MUST be dealt with. Fuel pressure should be a static value that does not change. Those who run systems that are dropping and have tuned around it, it is just a baindaid. It is not correct.
In a proper fuel system You should have more volume delivered than used. If you are dropping pressure at all, then you do not have adequate volume, PERIOD.
Hopefully someone will chime in on your proposed mod. It seems logical, but we're talking about the C5 fuel system here...
Premium Supporting Vendor
Joined: Mar 2001
Posts: 5,241
Likes: 21
From: Knoxville Tennessee
I answered you in the other thread, but that is fine.
I would recommend you add a regulator.
When I said that I WOULD NOT buy a 97-98 rail I thought you were set on changing the rail, I would not buy a 97-98 rail since aftermarket fuel rails are relatively cheap.
I agree for what you are making you don't need it.
Don't know if you have a meth system or not, but that would be a great addition to your setup as well.
I would recommend you add a regulator.
When I said that I WOULD NOT buy a 97-98 rail I thought you were set on changing the rail, I would not buy a 97-98 rail since aftermarket fuel rails are relatively cheap.
I agree for what you are making you don't need it.
Don't know if you have a meth system or not, but that would be a great addition to your setup as well.
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Thread Starter
Intermediate
Joined: Nov 2009
Posts: 45
Likes: 0
From: Fort Lauderdale Florida
I answered you in the other thread, but that is fine.
I would recommend you add a regulator.
When I said that I WOULD NOT buy a 97-98 rail I thought you were set on changing the rail, I would not buy a 97-98 rail since aftermarket fuel rails are relatively cheap.
I agree for what you are making you don't need it.
Don't know if you have a meth system or not, but that would be a great addition to your setup as well.
I would recommend you add a regulator.
When I said that I WOULD NOT buy a 97-98 rail I thought you were set on changing the rail, I would not buy a 97-98 rail since aftermarket fuel rails are relatively cheap.
I agree for what you are making you don't need it.
Don't know if you have a meth system or not, but that would be a great addition to your setup as well.
So anyway I found a shop that actually stocks them but since they are discontinued they are $$$$. So yes, I will go ahead with the aftermarket rails and lines and just do it right. I figured I would do the old rails since it would have been under $50 but just for the rails and reg this local place wants like $250...
Premium Supporting Vendor
Joined: Mar 2001
Posts: 5,241
Likes: 21
From: Knoxville Tennessee
Actually, I thought HorsePower Sales had one (I specifically asked them in a PM if they had a 97/98 rail) and they said they had 2 and to just make him a fair offer and its mine. So I called to verify and went over there and they are 99+ rails. Those guys have always upset me one way or another, I could go on and on but I wont bash anyone on here... No sorry or anything, just oh, yeah oops.
So anyway I found a shop that actually stocks them but since they are discontinued they are $$$$. So yes, I will go ahead with the aftermarket rails and lines and just do it right. I figured I would do the old rails since it would have been under $50 but just for the rails and reg this local place wants like $250...
So anyway I found a shop that actually stocks them but since they are discontinued they are $$$$. So yes, I will go ahead with the aftermarket rails and lines and just do it right. I figured I would do the old rails since it would have been under $50 but just for the rails and reg this local place wants like $250...
Thread Starter
Intermediate
Joined: Nov 2009
Posts: 45
Likes: 0
From: Fort Lauderdale Florida
Okay if I do lets say an Aeromotive A1000 regulator and use the stock fuel rails and stock feed line, what parts will I need for the return and the fittings to connect the reg up to the stock rails?
