Compression Ignition Addict
Join Date: Jan 2008
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No bubbles burst here , been both routes on 3 superduty's. With my current set-up the K&N was already on there and IMO the "set-up" looks better than the 6637 mod. As far as keeping it as a heat shield i totally agree , not doing much. So why not use a cleanable Amsoil filter , that bolts into an existing set-up , instead of hacking the compartment up more to fit in a $40 filter that needs replacing ? The 6637 is great if your modding on a budget , but you will never convince me it looks " nice " tucked under the hood. Not attacking in any way as i said , i have run the 6637 on other trucks and it worked great. To the OP , to answer your ? again the 6637 will not fit with the current set-up. If you remove it , sure , it works great , if you want to keep your current setup and change the filter to something that also works and is not a K&N then get the EAAU-4095. Or keep the K&N , lots of bad juju floating the internet but i have seen no actual data. I had the K&N on the new motor for 30k and pulled probably 10 times to check the intake tube and never once in wiping inside with a clean white cloth did i see the first hint of dust but decided to jump on the bandwagon as a new filter seemed like cheaper insurance.
Also the k&N on the tahoe kept throwing codes for the MAF sensor , clean the sensor and code gone , drive it again and code back. Same thing over and over until i went back to stock filter and no more problems. That alone is what caused me to pull away from the k&N all together.
Take 3/4 of the info and recommendations on here with a grain of salt
Never had CNC's junk on any of it, never will.