Toyota Tundra Improved MPG, HP – G-Tek Fab SABM Kit Available
If you are in the market to crank a little more HP while picking up some MPG gains, check out this custom stock air box modification from G-Tek Fab over at TundraGeeks.com. It just might be the solution you are looking for.
Dez, master fabricator, has developed a new stock air box mod (SABM) kit that improves HP and increases fuel economy. The kit especially works great for those truck owners who have lifted and/or added bigger tires to their truck yet feel they have lost power. In fact, that is the inspiration for the kit’s creation. Dez says, “For those that are not sure what the SABM is well its a Stock Air Box Mod that was developed back in 2007 when I first got my truck lifted. I loved the power when I first drove it but after lifting it and adding 37″ tires it lost its punch. I wanted to add a little power so the first thing I looked at was a possible modification to the stock intake.”
The kit works with your stock air box and with a few simple steps you can add the power back. It is designed for the 2007/2013 Tundra 5.7, 4.7, 4.6 stock and TRD intakes.
The kit includes:
- Two 3″ 6063 aluminum flange pieces one with a foam gasket attached.
- Two 4″x3″ aluminum flange rings one with a foam gasket attached.
- One 5″ length of foam seal for the outside of the air box base.
- One 7″ length of foam seal for the inside of the air box base.
- One 4 ply silicone intake tube in black, red, or blue.
- Two stainless steel 3-1/2″ hose clamps.
- Complete set of step by step instructions.
- One G-Tek Fab and one Tundra Geeks sticker.
The kit comes with a flange and flange ring for the motor compartment wall side with foam seal attached to them. The air box flange and ring has nothing on them but there are two strips of foam seal included to add to the steps on the inside and outside of the air box shown below. The air box flange has a flat spot to account for the small radius at the bottom of the air box.
There are plenty of install threads on TundraGeeks to check out. Here is the basic install process from Dez:
The install is very simple. All you need is a 3″od hole saw and a flat screwdriver to tighten the clamps. One flange inserts from inside the fender well and the other from the inside the stock air box. Slip the boot over the fender side flange and tighten the clamp. With the air box in place slip the other flange through the air box into the rubber boot and tighten the other clamp.
I would have to think with some double-sided tape on the flanges, installation would be easier too. Remove the bottom half of the air box (you’ll need to for drilling anyways), then run the flange through the factory hole, and just stick it into place in the new hole you just drilled Simple enough.
Of course with any product like this, there has to be proof that it does indeed do what it claims. TundraGeeks member, and pretty mechanically handy guy I might add, MPToy07 took his single cab, super-charged Tundra in for a dynamometer test. Here is what he found:
The first run in blue showed 510.41 HP / 512.36 TQ, and had the highest boost pressure of 6.69 PSI.
Second run in red was 508.29 HP / 522.46 TQ at 6.58 PSI boost, and a slightly higher ambient temperature (truck warming the surrounding area)
Last run was in green with the SABM kit opened up, and showed 516.36 HP / 522.85 TQ at 6.52 PSI boost, and a slightly higher yet ambient temperature.
So technically, total gain between the first run and last was only 6HP, BUT you can see the HP numbers going down as everything started warming up, then a decent size jump when the SABM kit was opened up and the truck allowed to breathe. It definitely helped in my case.
MPG and HP Gains
Scanning through the forums, it looks like the majority of truck owners are seeing single digit HP gains (8 or so) and 2-3 MPG increases. This is quite impressive for such a simple modification to the stock air box.
Why does it work?
Dez explains, “After the modification the first thing I noticed was tad bit of performance then I realized I was getting a little better gas mileage! This modification seems to allow the motor to run a little more efficient at the same time allowing it to gulp more air when you step on it.”
The kit is being offered at an introductory level at $65 per kit plus shipping.
The reality is that if this kit gives more bang for the buck then cold air intakes. Check out the kits here at TundraGeeks and let us know below what you think.
- Do After Market Air Intakes REALLY Work?
- Toyota Tundra Cold Air Intakes
- Product Review: Volant Cold Air Intake
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- 2017 tundra sabm
Filed Under: Toyota Tundra Accessories