450r

so i am running mods that are in sig with stock air box amsoil nanofiber replacement filter and a 4 inch hole in bottom of airbox yet my filter minder keeps sucking down i cleaned my airfilter even tho it want real dirty any ideas

92'1stGen

Sounds like there's more demand than there is supply.

450r

yeah but why would there be more demand than stock when im running same turbo just a smarty jr my intake i made si same as the psm soem of you are familiar with

annabelle

I have the same filter set up and run the Smarty. With the Amsoil drop in I was always pulling the filter minder down and I even tore the Amsoil filter apart. I haven't had the same problem using a stock paper filter.

jimbo486

amsoil filters might have larger pores that tend to get plugged up easier? and with a tuner like the smarty, your demand for air increases because the tuner increases the fuel delivery.

FLYH2O

Sounds like the filters don't flow very well? That little tool is telling you so.

spitfire9137

The smarty is putting more fuel in which requires more air to burn. You may not notice it but your engine is requiring more air with the smarty on it.

carl48

the amsoil is to restrictive, many are having problems go back to paper

txarrowhunter

In the past I have done a post about this, I have an AFE S2 megacannon with a pg7 and it still sucks my filter minder down under hard accelaration. My truck runs stock, but the advice I received from DTR members was that it was getting enought air just to ignore it.

Dan_K

Obviously the filter is choking off the air. The stock setup does this also. Get yourself a filter with more surface area and this problem will go away. If you want to keep the stock arbox then your only option is the K&N which is what I use. There are open element filters also, but you tend to hear about water injestion or underhood heat with these.

knc77

My Amsoil air filter does the same thing and my truck is stock. It will pull the minder half to 3/4 but that is about all. If I clean the filter up real well, It does not pull the minder down as far for a while. On the positive side, I know the air going in is clean.

Lost Lake

Hey this one is an easy question!!!

The filter minder is a spring. It is in the air box on the negative side of the filter. It shows you how much pull is on that side of the filter.

The turbo sucks air in, and can suck pretty dang hard. When there is a restriction in the intake it will suck hard enough to pull the filter minder spring in, giving you a quick indication that the filter is plugged. The engine is starving for air.

I run a Smarty with a stock Wix Gold filter. I run about 25,000 - 30,000 miles before I need to change the filter. My turbo is getting plenty of air as indicated by the filter minder.

If someone tells you the filter minder can just be ignored, or they all do that, I would guess they are selling these cheap filters to you. Toss the cheap restrictive filter and put on one that lets your engine breath what it needs.

Again, if the filter minder is being pulled, it isn't breathing enough. It's an uber-simple piece of technology.

knc77

Yup simple science. The filter minder reads vacuum on that side of the filter. The linear compression of the spring indicates much vacuum is being drawn. Provided I am not running mine all of the way down to the yellow range, I am operating within the specs the engineers set for the engine. Air filtration is a balancing act between free flow (0% filtering) and no flow (100% filtering including the air itself being filtered out.)

Hope you didn't take my statement the wrong way meaning to ignore it. It needs to be within the specs the designers called for.

MegaDawg

My drop in Amsoil filter worked great brand new out of the box on my all stock truck, then after about the 2nd or 3rd cleaning it started sucking down the filter minder. Amsoil nano filters will not clean properly using a vacumn cleaner or low pressure air. Amsoil needs to change this filter to a disposible filter and not a lifetime filter. I'm very reluctant to try anymore of Amsoil micracle products.

BLACKBEAR

You would think if it is telling you are not getting en ought air you would go back to your reg filter!! The Am soil filter is JUNK do not starve your ENG for air.