LANDTANK performance MAF housing

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I'm getting close to finalizing the next Generation. Right now I had a temporary sleeve made out of plastic and have been able to get the LTFT% to have a total variance of 3.5% throughout the operating range while the stock units have a total variance of 5.46%.

A wide band sensor is being installed today and an aluminum sleeve is in the works. Barring any complications they should be ready to go in the next month.

Thanks for your patience
 
I've got the aluminum sleeve and it's been installed and the tested through the OBDII port, a wide band O2 sensor and the test procedure out lined in the FSM. Using those three to evaluate the change everything is within factory specs.

To install the sleeve you will need to place the cleaned housing into an oven heated to 350* for 30-40 minutes. This heat soaks the housing and expands it. You then slip the sleeve into the housing and position the hole for the sensor properly. The hole doesn't need to be exact but does need to be close.

You will only get one chance at this as once the sleeve expands to the same temp of the housing it will be locked into place. As an added precaution you can place the sleeve in the refrigerator while the housing is in the oven to give you more time to align the sleeve.

During production of the original housings there was a slight change made to help with cost. The sleeve is designed for the more common housings and can't be installed in the others without some slight machining.

To tell the difference you need to inspect the bore of the housing.

If the bore has slight lines running along the bore it is the more common housing and the sleeve will fit.

If it is a smooth bore or has some radial lines around it, the sleeve won't fit and please contact me so we can work something out.

For those uncomfortable about the install of the sleeve you can send me your housing and I can install it for you.

For those who have a housing that the sleeve won't fit or want me to install it for them please email me at landtank@comcast.net. This is for tracking purposes and PMs on MUD will be ignored concerning this process.

I now have the cost for the sleeves. They will be 15.00 plus shipping. A single sleeve will be shipped USPS which will cost 15.00. If people group up on the orders I can quote shipping cost for a single multiple order.

Attached is some pics of the sleeve and it installed in a housing and the install guide.pdf.

edit: it is my recommendation that everyone install the sleeve along with the vacuum sensing line to the fuel pressure regulator.
sleeve 002 (Medium).webp
sleeve 003 (Medium).webp
 

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Hi Rick,

Can you take a close-up picture of the bore? I just want to make sure as to which version I have (one with slight lines, smooth or radial lines). Also can you remember when you changed the design of the original housing?

Thanks,
Alex
 
There is only about 20 or so housings with the smooth bore.

I wanted the sleeve to be a "no glue" install and the slight difference in the ID between the two won't work with a single sleeve.

Here is a pic of the more common housing that will accept the sleeve as is.
bore 001 (Medium).webp
 
So what are all the practical benefits of this sleeve compared to the non sleeved housing?
 
IMO, the underlined part.

I've got the aluminum sleeve and it's been installed and the tested through the OBDII port, a wide band O2 sensor and the test procedure out lined in the FSM. Using those three to evaluate the change everything is within factory specs.

:cheers:
 
there were concerns raised about the fact that the vacuum line needed to be removed from the fuel pressure regulator to keep the fuel trim percentages within the factory specs. So this sleeve shifts the MAF readings so that the vacuum line needs to stay attached.
 
Rick, I'm curious as to why you wanted the sleeve to be such a tight fit to the body. Obviously you wanted it to stay in place, and you said you didn't want to use glue to do it, but is that the only reason?
 
Rick, I'm curious as to why you wanted the sleeve to be such a tight fit to the body. Obviously you wanted it to stay in place, and you said you didn't want to use glue to do it, but is that the only reason?

yes and I didn't want any possibility of any air diverting around the sensor or the sleeve moving out of position. Having it installed this way ensures that the sleeve is aligned perfectly to the bore.

It's important that the air flows through the housing in a controlled predictable manner.

It's a .004" interference fit. When you heat the housing it expands about .009" which is enough for the sleeve to slide in and allow you to position it.
 
there were concerns raised about the fact that the vacuum line needed to be removed from the fuel pressure regulator to keep the fuel trim percentages within the factory specs. So this sleeve shifts the MAF readings so that the vacuum line needs to stay attached.

I've been running your MAF with the vacuum line connected and my truck runs awesome and gets amazing gas milage. As far as I'm concerned nothing needs fixing ON MY TRUCK unless this sleeve: a) is an even bigger improvement, or b) my current configuration is harming my engine and the sleeve will prevent that.

Thoughts?
 
I've been running your MAF with the vacuum line connected and my truck runs awesome and gets amazing gas milage. As far as I'm concerned nothing needs fixing ON MY TRUCK unless this sleeve: a) is an even bigger improvement, or b) my current configuration is harming my engine and the sleeve will prevent that.

Thoughts?

I've yet to see any evidence that the original design creates a problem. Running with the vacuum line attached will cause a shift in the LTFT% and depending on where you are, the time of year and the general health of the fuel delivery system you may get a CEL.

With the sleeve it's designed to work with the vacuum line attached.
 
I now have the cost for the sleeves. They will be 15.00 plus shipping. A single sleeve will be shipped USPS which will cost 15.00. If people group up on the orders I can quote shipping cost for a single multiple order.
 
Any news on the new housing? Or I'll have to get the recent version and the sleeve?

One more thing, the sensor remains the same?

Thanks
 
Any news on the new housing? Or I'll have to get the recent version and the sleeve?

One more thing, the sensor remains the same?

Thanks

Yes the sensor stays the same. Right now I have some of the original housings that are brand new and will be installing the sleeves prior to sale.

Because they are left over inventory the cost will be with the addition of the sleeve.

So the total will be $220.00 + 15.00 S&H for continental US and please add another 15.00 if going to Canada.

They should be available by the end of this week.
 
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