This is perfect for the lower pump. But on the fuel rail, this would cause it to stick out quite a bit and you'd lose that path down between the manifold and oil filter housing. Need a 90 degree version of this.
DIY : PTFE line- tank to HPFP + inline fuel filter upgrade
- Thread starter Blaster3500
- Start date
Here is the link to the 6 micron fuel filter element from the OP:
https://www.amazon.com/Fuelab-71804-Micron-Micro-Fiberglass-Element/dp/B00378Q93Y/
And here is the link to the 5" version(instead of 3"):
https://www.amazon.com/gp/product/B00378Q9MA/
But is this really the best filter? @Tippin raised some concerns with me and pointed me toward injector dynamics' filters. In the process of researching them I came across this, which basically says most 6 micron filters probably aren't really a 6 micron filter and could potentially allow particles large enough to damage injectors:
http://help.injectordynamics.com/support/solutions/articles/131145-fuel-system-filtration
https://www.amazon.com/Fuelab-71804-Micron-Micro-Fiberglass-Element/dp/B00378Q93Y/
And here is the link to the 5" version(instead of 3"):
https://www.amazon.com/gp/product/B00378Q9MA/
But is this really the best filter? @Tippin raised some concerns with me and pointed me toward injector dynamics' filters. In the process of researching them I came across this, which basically says most 6 micron filters probably aren't really a 6 micron filter and could potentially allow particles large enough to damage injectors:
http://help.injectordynamics.com/support/solutions/articles/131145-fuel-system-filtration
Yeah, but that surely isn't that great of a filter is it? Pre filters are usually pretty lax from what I've seen, just enough so the pump doesn't get damaged, even a hydramat is only 15 micron. Injector Dynamics is saying some 10 micron filters aren't doing squat all the way up to 25+
So if you have a 6 micron filter that does nothing or little up to 20 microns, then the filter is basically a waste of money. Particularly if you have a hydramat or another filter in the tank.
Admittedly I don't know a lot about or LPFP setup, I've never even had one out myself.
Had some similar conversation in another forum about the stainless steel oil filters. The discussion was somewhat on how filtering is rated, standards, testing methods.
When a product is advertised at x micron, this may often just be marketing getting involved because that is what people expect to see. The problem is, the micron size is useless information without know the testing method or efficiency (Beta Ratio) of the filter.
For example, I can say my filter will trap 6 micron size particles! The catch is, how many of them will they catch? What you need to know is "at 6 micron, the Beta Ratio is 1.5 (33%)" and "at 25 micron the beta is 10 (90%)".
The marketing people will grab the lowest number (6 in this example) even though many much larger particles will pass through.
When a product is advertised at x micron, this may often just be marketing getting involved because that is what people expect to see. The problem is, the micron size is useless information without know the testing method or efficiency (Beta Ratio) of the filter.
For example, I can say my filter will trap 6 micron size particles! The catch is, how many of them will they catch? What you need to know is "at 6 micron, the Beta Ratio is 1.5 (33%)" and "at 25 micron the beta is 10 (90%)".
The marketing people will grab the lowest number (6 in this example) even though many much larger particles will pass through.
I noticed this as well, 25% of particles trapped at say 10 microns and 90% at 25 microns etc.
So what is the truth on this filter at amazon?
So what is the truth on this filter at amazon?
So to shed some light on this.... standard bosch injectors call for 6 micron fuel filter. As far as I am aware, no aftermarket fuel filter on the market actually can actually filter at that level other than injector dynamics. They actually ordered dirt/ sand particles to confirm their filtration. I would trust this over any other fuel filter on the market at the moment. Even others that advertise "6 microns" have been tested and do not live up to what they claim. If you do not believe me look up Pail; yaw on facebook he is the owner of ID and posted videos supporting his claims.
This type of filter is what you would want pre HPFP, especially if you plan on deleting the OE intank filter which I wold like to do in the future.
@doublespaces
This type of filter is what you would want pre HPFP, especially if you plan on deleting the OE intank filter which I wold like to do in the future.
@doublespaces
So there is a pre pump sock thing? As well as the in tank filter on the passenger side? Does anyone know how good that filter is?
There is a filter in passenger side but I have no idea how good it is
https://www.ecstuning.com/b-genuine...el-pressure-regulator-repair-kit/16147163296/
https://www.ecstuning.com/b-genuine...el-pressure-regulator-repair-kit/16147163296/
Last edited:
Great tip on injector dynamics .
"Bosch provides a specification for protection of electronic fuel injectors, which is a minimum capture efficiency of 87% at 5 microns, and 100% capture efficiency at 35 microns."
I would not trust a filter that did not provide these kind of data:
Bonus feature: Their filter provides a gauge to indicate the pressure differential to indicate when the filter needs changed.
This is the chart for their filter
"Bosch provides a specification for protection of electronic fuel injectors, which is a minimum capture efficiency of 87% at 5 microns, and 100% capture efficiency at 35 microns."
I would not trust a filter that did not provide these kind of data:
Bonus feature: Their filter provides a gauge to indicate the pressure differential to indicate when the filter needs changed.
This is the chart for their filter
I ran across that article when doing my research. The ID filter was quite expensive and not as easy to mount. I have a hard time believing they are the only filter thay filters well. Not sure how much it matters but the fuel lab is a microglass not stainless. Also VTT doesn't even recommend a filter and says to pull the filter out of the HPFP when installing the shotgun. A good number of people don't run an inline filter and have the hpfp filter removed.
If the stock HPFP fuel filter was really needed then it would likely clog every X0,000 miles / Y years and require replacing at similar intervals. So far haven’t seen anything like that or a replacement part number.
So maybe all we need to do is to just pull the stock fuel filter out of the HPFP?
The filter is there to protect the orbital pump.
Each injector has its own filter built in into the injector inlet as there is nothing to protect
the injectors from pump failure just for this reason.
But its great you guys found something better, no such thing as over filtration until it becomes a restriction.
Each injector has its own filter built in into the injector inlet as there is nothing to protect
the injectors from pump failure just for this reason.
But its great you guys found something better, no such thing as over filtration until it becomes a restriction.
Any filter is better than nothing, yes you can run without one.
Each to their own, I can afford a filter but imagine the in tank filter fails and something comes through
Someone will wish they did considering the small cost of the filter compared to a pump.
Each to their own, I can afford a filter but imagine the in tank filter fails and something comes through
Someone will wish they did considering the small cost of the filter compared to a pump.
AGREED! I would rather spend the money to be safe rather than be sorry later. Plus It already looks like somethings are making it past the filter.
My biggest concern is if the OE filter is even safe for ethanol use. If not it will fail sooner or later.
My biggest concern is if the OE filter is even safe for ethanol use. If not it will fail sooner or later.
INDEED - The filter material must be ethanol safe. I would not use a paper filter for this reason. Paper is based on cellulosic (plant fiber) materials and >could< cause problems, especially if it gets hot, like in the engine bay. Glass-based (fiberglass, micro-glass) or stainless steel-based filters with lots of surface area (large) probably best.
And how many people do you think will also come back and tell everyone how stupid they were for doing that when they have an injector get stock open?
My HPFP filter was gunked up if you saw it in an earlier post.
EDIT: Also, I'm not saying the 6 micron filter you posted won't work. I'm just raising the question, asking if we have any actual evidence about its performance.
