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But when I watch the videos none of the say anything about all those 1/4 rubber air hoses going in to the box. Do you just close the off ? or leave them open? thanks
OK I HAVE TAKEN THE AIR BOX OUT , SO THE AIR HOSE STARTS AT A NIPPLE ON THE INTAKE JUST B4 THE THROTTLE BODY, THAN GOES TO A PLASTIC CYLINDER, 1 3/4" ROUND 4" LONG IN SIDE THE AIR BOX, THAN OUT THE CYLINDER UP TO ELECTRICAL SWITCH, THE HOSE THAN GOES TO A VACUME ACTUATOR THE OPENS A SMALL FLAP ON THE SIDE OF THE AIR BOX TO LET IN MORE AIR, WILL TRY TOM LAD PICS
From an air flow direction point of view you must mean after the throttle body.
If you are removing the air box then you will need to cap the ports where the hoses were previously attached else there will be a vacuum leak and you’ll have problems.
...and don’t be alarmed if you trigger engine codes P0171/P0174 for “lean condition” at some time after removing. I found that the air boxes do a good job of insulating the MAF sensors from turbulent airflow. Deleting the air boxes and replacing with high flow air filters exposes the MAF sensors to air turbulence causing erratic readings and ultimately triggering the codes above. I chased this issue down for almost a year before I figured it out and I’ve since re-installed my air boxes (but still using high flow air filters.). All my lean code issues are now gone for good.
-Dan
Last edited by supraholic; Mar 24, 2021 at 08:09 PM.
Yep, I installed air straighteners in the intake track just before the MAF—worked well but I decided to re-install the air boxes anyway. Here’s a longer write up at this thread: https://www.6speedonline.com/forums/...74-15-v8v.html
Clearly the screen is a good way to create a more laminar flow approaching the MAF, but considering it is pretty similar to a catalytic converter matrix, I wonder if adding this will negate any increase in airflow seen from the removal of the airbox? Cats are not really well known for improving flow rates, and even they generally expand in diameter to help minimise restriction.
Speaking to a professional racing team who race Vantages, they stated there was no performance improvement on the GT4 set-up over the standard airbox, but allowed easier inspection and servicing, and reduced weight at the expense of debris and water ingress.
Plus they bellow nicely!
I was thinking the same issue on air flow, have a set of the alu honeycomb on the way, similar to a cat, but different. The alu is an open cell, yes there is less air volume, how much. There must be someone out there that can tells us that, but does the volume increase because of less turbulence? thanks
I’m going to try the honeycomb as well. I’ve had similar codes intermittently as supraholic since putting the deletes in my dbs.
I’m going to order the entire air mass sensor housing I just need to discuss with the company and which I need (know the maf sensor itself is a Ford part so assuming the housing is too). That way the honeycomb will be secured in place from the company directly.
Thanks! Do you have the length of the housing as well by chance if it's off your car?
I'm going to go with this after talking to the company (3.25" OD). This will work with the Aston DBS sensor. It's 6" long, looks like the factory housing may be a little longer and also have a curve to it.
My assumption is that the tubing from the throttle body to the MAF will need to be redone for this, I could be wrong as the factory rubber tubing has "kinks' in it like an accordion and maybe it can be stretched or adjusted to the proper length but I haven't messed with it yet.
air filter delete setup
