Not sure what you mean , the heater deletes are no big deal at all the heaters dont take up much room in the intake , if i was to fabricate a horn i would make it to where i could still use the OEM intake heaters

 

I've heard just the delete improves airflow the same amount as an intake horn would. So I figured if i do both it would be that much better. Since I live down south no real need for the heater delete so I would just make it longer to eliminate the heater grid/delete. Just don't know if the added work in modifiing the 4" to fit the flange is worth it over just using 3". But I'm leaning towards your idea of just keeping the heater grid just in case.

 

Go all the way then

The fins are vertical and paper thin not like its a big restriction

 

Just by looking at the design and head casting on mine, IMO, there would b much gained by just doing some porting and polishing right where the horn flanges with the head. They dont match very well at all and look very restrictive to me.

 

As far as the name brand ones go I like the CFM+. However I sold mine to run the new one that AirForceOne Performance intake horn. Its 100% T304 Stainless Steel. Its a great looking pice and seems to performe just as well as anything I have had on my truck to date. Hey MayFair whats happining havnt seen you around in a wile.

 

Any pics of the AirForceOne intake horn? They don't list it on their site.

 

Yeah DM but when you add ALL of them up it is a pretty good restriction. I noticed a difference in the 89 pulling them out. I will leave them in the 06 though.

 

They should have them up on there site soon and also on BTG Motoring's web site also. I talked to them the other day and said that there webmaster came in and took pics. So they should be on there web site and avalible very soon.

 

I couldn't find it. I searched for "TRE Dyno test" and only found one chart. It didn't apply at all.

 

Hear is a link that you can see some picks of the first prototype on my truck. Brand new intake manifold - Dodge Cummins Diesel Forum