BlackT
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« on: September 03, 2019, 08:45:16 PM »
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I want to add more fuel beacuse my IDC is close to 100% The cheapest and simplest solution is to fit a fuel filter with higher presure. Few days ago I was searcing on internet and I found a 5 bar fuel filter. And i could swear with my life i saw it. Now it is imposible to find it only 6 and 4 bar is what I see now. I think even I read somewhere on forum that tfsi use 5bar, but looks like that was a misinformation Is there 5 bar fuel filter for returnless engine?
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IamwhoIam
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« Reply #1 on: September 04, 2019, 05:22:10 AM »
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the latest TFSI revision is a 6.x bar filter, however, you might see your pump struggle to keep up in order to make that pressure at redline. There were some older revisions that were 5.x bar (5.7 I think) but whether they fit your returnless 1.8T or not, I have no idea.
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I have no logs because I have a boost gauge (makes things easier)
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Blazius
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« Reply #2 on: September 04, 2019, 06:27:15 AM »
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The 20 valve derived 2.0 tfsi(ea113) uses 5 bar (to 3bar) fuel filter and pump, that might work,dunno.
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BlackT
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« Reply #3 on: September 04, 2019, 09:06:13 AM »
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The 20 valve derived 2.0 tfsi(ea113) uses 5 bar (to 3bar) fuel filter and pump, that might work,dunno.
Do you have number part? the latest TFSI revision is a 6.x bar filter, however, you might see your pump struggle to keep up in order to make that pressure at redline. There were some older revisions that were 5.x bar (5.7 I think) but whether they fit your returnless 1.8T or not, I have no idea.
6 bar is to much, 5.5or 5.7 if that is closest one is maximum that i will give a try
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Blazius
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« Reply #4 on: September 04, 2019, 09:42:30 AM »
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Do you have number part?6 bar is to much, 5.5or 5.7 if that is closest one is maximum that i will give a try
Nah my etka is broken atm, but look for an Audi A6 c6 2005 or so 2.0 tfsi fuel filter, you should find it.
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BlackT
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« Reply #5 on: September 04, 2019, 02:05:25 PM »
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Nah my etka is broken atm, but look for an Audi A6 c6 2005 or so 2.0 tfsi fuel filter, you should find it.
Can you use online etka? I am not able to find it, only 4 and 6 bar
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airtite
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« Reply #6 on: September 06, 2019, 12:21:36 AM »
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on this subject, whats the biggest FPR that I can get for the c5 rs6 and does anyone have a part number? I know I bought one for my b6 s4 but for the life of me cant find the part number anywhere. 2nd question if I upgrade the FPR will it assist with fueling or is that a waste of time?
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BlackT
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« Reply #7 on: September 06, 2019, 01:49:14 AM »
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I will give a shoot 6 bar filter. Bur my question is will that presure harm my injectors. Even I doub't that stock fuel pump will flow 1500 cc/min at 6 bar
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airtite
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« Reply #8 on: September 06, 2019, 04:58:16 AM »
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on this subject, whats the biggest FPR that I can get for the c5 rs6 and does anyone have a part number? I know I bought one for my b6 s4 but for the life of me cant find the part number anywhere. 2nd question if I upgrade the FPR will it assist with fueling or is that a waste of time?
To answer my own question about the part number for the 5bar FPR its 078.133.534 Not sure about whether adding this will be a benefit or not? The rs6 runs out of fuel before boost with the stock turbos... not log tested yet but would prefer not to push the limits.
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BlackT
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« Reply #9 on: September 06, 2019, 10:49:35 AM »
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Today I tested my old fuel pump from A4 B5 1.8T and here are the numbers are Maximum presure that pump can deliver is about 7 bar At aprox 6.2 bar it can deliver 1200 cc/min At 3.8 bar it delivers about 2300 cc/min Testing is done at 10V, fuel pump surge about 5A.
Sooo, at 14V I think it will be able to deliver at least 1400 cc/min at 6 bar. and that is enought for me. Is there a danger that injectors will fail at that presure?
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Blazius
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« Reply #10 on: September 06, 2019, 01:16:32 PM »
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Today I tested my old fuel pump from A4 B5 1.8T and here are the numbers are Maximum presure that pump can deliver is about 7 bar At aprox 6.2 bar it can deliver 1200 cc/min At 3.8 bar it delivers about 2300 cc/min Testing is done at 10V, fuel pump surge about 5A.
Sooo, at 14V I think it will be able to deliver at least 1400 cc/min at 6 bar. and that is enought for me. Is there a danger that injectors will fail at that presure?
Dont think so, however high prssure fpr will cause strain on the pump , it will fail way faster then oem.
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nyet
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« Reply #11 on: September 06, 2019, 02:21:57 PM »
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I don't think a 5bar fpr is a good idea either, injectors will behave differently as well (more latency, etc).
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BlackT
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« Reply #12 on: September 06, 2019, 05:09:50 PM »
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I have really bad filing about puting 6 bar fpr. I think it is better idea to find biger injectors I have opportunity to buy S3 injectors, but they are different. Can these injectors work on my engine?
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Blazius
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« Reply #13 on: September 07, 2019, 12:32:28 AM »
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yes they do, the long nose is more suited for small port afaik but it works on both.
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BlackT
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« Reply #14 on: September 08, 2019, 03:12:45 PM »
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I found that fuel injectors can hold up to 7 bar. The lifetime of fuel pump doesen't bother me. I run on LPG and fuel pump is off in that condition. So i will give a shoot with 6 bar FPR Question before I do that, what variables do I need to log on stock sistem, to make sure everthing is working alright.
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