GM Diesel Trucks & SUVs
© All images and text are property of this website,
photographer and/or author and protected by Copyright.
Scroll Down for Duramax info &
Transmission Control 4L80E
6.5 TD Performance Cool Air Intake
6.5 TD Turbo Downpipe
6.5 TD Intercooler
Headlight Light Switch Saver and Light Intensifier
Oil Pressure Switch Saver
Ignition Switch Saver
6.5 Stock Airbox
6.5 Stock Exhaust
Duramax 6600 Performance
The Magnus-Moss Warranty Act ______________
The stock paper air filter is quite restrictive and changing to a Hi-Flow Air Filter will allow the turbo to spool up easier and in most cases you will hear the turbo whirring as it pulls more air. To help the air flow better I also recommend removing the restriction in the fender, some call this part the "snorkel", even though it has nothing to do with water.
I recommend removing the air box completely whenever replacing 6.5 turbo diesel air filters
to make sure the box is clean and the filter is fitting correctly, this is
especially important with other make filters. Click here
for info and pictures on air box and "snorkel" removal.
Allowing the engine to breathe better will add efficiency and performance and should help increase mpg, provided you maintain the same driving habits, but sometimes it's hard to resist using the added power.
Since 1978 I have used the K&N washable air filters which are the oil impregnated cotton gauze (OICG) type. We found that were good for performance applications, but over the last few years other companies have produced similar filters, we found one company who makes very high quality filters and we met with them to discuss our needs. These filters IMHO they are much better quality, the deeper pleat design creates more surface air area which allow greater flow and as the filter gets dirty the flow and filtration stays good longer.
If you are considering any "FOAM" type filters. Click here to read the WARNING about foam air filters.
With many other filters it's all too common for the seal to deform allowing unfiltered air to pass by the filter. I find the seal on these to be much better quality and have not seen any indication of possible deformation.
The photo above shows the our red filter (red) note the nice rectangular shape, straight sides then how this compares to the compared to the other (black), note the mis-shaped look of the seal.
The photo above the wire mesh on the other filter is not properly covered by the seal material, note the more exacting shape of our filter.
In our testing after installing our filters I noticed an immediate power gain and could hear and notice the turbo spool up faster.
Pictured above are the 3 common GM diesel air filters which are available and we try to keep in stock, air filters for most other make and model vehicles are available too! From left to right; they are 1992 to 1995 GM 6.5 Turbo Diesel and some 1996, (flat filter); some 1996 and all 1997 to 2000 GM 6.5 Turbo Diesel (cylindrical filter); 2001 and up Duramax 6.6 Turbo Diesel (flat filter).
Most of these filters are $69.95, + s&h/ins.
Cleaning and Oiling Kits are $12.95, + s&h/ins.
of the truck
Downpipe Converter Test-Pipe
© All images and text are property of this website, photographer and/or author and protected by Copyright.
Disclaimer: Some products can adjust and/or increase power levels beyond factory parameters, so their use could possibly void your warranty, and may not be legal for use on emission controlled vehicles in some areas, due to these facts buyer accepts all responsibility for use, and his/her actions, there is no warranty either expressed or implied as to use of products, improper installation, settings and/or use of such could possibly cause property damage and or personal injury. The Magnus-Moss Warranty Act prohibits a dealer or manufacturer from voiding your warranty unless a product is directly responsible for a failure. Although effort has been made to try to present accurate information this website, it can contain some opinion, conjecture, errors, mistakes and typos so use any information with that in mind and if in doubt research anything you do not understand or question. There is no guarantee or warranty on information on this website or any others it links to and visitors agree to hold authors, page owners internet service providers and web hosts free from any liability arising from use of information provided. Prices subject to change without notice.
Send mail to firstname.lastname@example.org with
questions or comments about this web site.