MR.johnson

how many of you are only running a post filter on your setup? i have seen a few setups on here not running any prefilters...

also any pics on where you guys have them mounted would be great too.

kte324

iTrader: (2)

I believe its best if a 10 micron post-filter is used. IIRC, a 85-100 micron pre-filter.

MR.johnson

I understand that part. I guess I'm asking if the people not running any prefilters have ever had a problem with the pumps.

kte324

iTrader: (2)

My bad, I misread your post. I don't see why you wouldn't run a pre-filter. You wouldn't want any of that trash from a stock sump tank or fuel cell going through the pump.

narfdanarf

I always thought more people ran without them than with them. I had them on my car, but I know when I sold the car, they were removed and most of the other cars of people I know don't use prefilters with the 044's since they have a filter built into them.

Nonvtec eg6

I use a Aeromotive filter just before the fuel pump, but im using the Bosch 910 pump.

scmil95eg

In OE applications, 044's had a 20 - 25 micron filter on the inlet.

The screen inside the inlet port is the pumps last line of defense, if that starts collecting debris, you lose flow. period.

Injectors have inlet screens as well, but I think we can all agree it's still important to run a filter before them. Same goes for the pump.

Bizarre

So 20 or 25 micron filters should be utilized or do they not have to be that small?

HickamHatch

I always run one for safety.

turbo_rsx

never ran a pre filter 3 years now

MR.johnson

What do you use the car for... e85?

turbo_rsx

pump 93, q16, but mostly e85

MR.johnson

Do you use it as a street car?

extralargenog

iTrader: (1)

No pre filter... I do have the sock on the 255HP in the tank, to my 044 and a 10 after the o44 pre rail. 4-5 years no problem.

turbo_rsx

use to she is on jack stands now, the only filter I run is a post filter 100 micron from jegs and that's was added years later after finding copper shavings in my id2000 screen

MR.johnson

anyone else not running pre filters?

tepid1

I never have on my 044's. I run Kinsler post filters only. I try to always run my fuel through a mesh filter first before going in the tank. All my fuel comes from a can though.

MR.johnson

Lol. I just pump some E-whatever comes out of the pump.

tony1

Filters should not be ignored. You're only making problems for yourself by not running them or not running the right size.

You need a min of a 25 micron between the pump and injectors, but ideally a 10 micron. A 100 micron post filter is going to cause injector problems.

bonesawvw

fuellab 75 micron pre 044 and fuel lab 6 micron post 044. Running E85.

MR.johnson

Getting filters now. Thanks guys.

gizzmo222

If you run a single feed into a Y into 2 pumps back to a Y into a single feed up to the rail can you get away with one inline filter after the pumps or is it more ideal to run 2 filters attached to the pumps?

tony1

Yes, it's ok to run 1 pre and 1 post filter before and after your Y's.

On the topic of filters, stay away from the small filters with the little round disk 'element'. There's no surface area to them and they will become a restriction in no time.

On the post filter, the closer to the rail the better, as anything after the filter isn't filtered before the injectors. If you have rubber line that is degrading from alcohol use or cheap line, you want your post filter to stop it before it gets to the injectors.