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Best cold air intake and exhaust.
:-headbangWhat is the best cold air intake I can put on my 2001 7.3 ? Also, how about the exhaust? Thanks
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The best is open to opinion.. But what most here have gone to is the Napa 6637 (see riffraft diesel performance for a complete kit) for intake.. Exhaust, well that to is up to you, but a 4" open muffler seems do a decent job of keeping the EGT's down.
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What Pat said is 100% correct. Most here use the 6637 airfilter. As far as exhaust anything is less restrictive than stock. The least expensive option is a 4" turbo back aluminized system. You can upgrade from there, SS, Duals, Stacks, 5" system.
What are you looking for out of a system? Sound, etc? |
I have a stage 1 AFE w/pro-guard 7 I will give it to you.I use it for about 6 mounths,you just have to clean it up a little.PM me if you want it.
It runs off the factor set up and you can do the zoodad mod and it will get more cool air that way. Pete,has the covers for these now. |
Mine is stock pipe 3 1'2" out the side straight pipe no muffler also 6637 filter! Runs better, uses less fuel, sounds better! Only thing is, can't sneak home anymore she can hear me way before I get there! :-banghead
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Get a 6637 kit from Clay at RiffRaff Performance and a MBRP or MKO exhaust either a 4in or 5in and go from there IMHO I would rather have a muffler straight pipe sounds like crap with that flutter.
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Anyone have a pic or a link to the 6637 kit that Clay at RiffRaff Performance sells. Been offline for a while and have been seeing his name & kit posted oftern lately.
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his site isnt really up and running yet..you will need to email him
Riffraff Diesel Performance http://www.riffraffdiesel.com/ |
Originally Posted by coolrydr
(Post 7372936)
:-headbangWhat is the best cold air intake I can put on my 2001 7.3 ? Also, how about the exhaust? Thanks
2) The Ford AIS system replaces the stock airbox and provides excellent filtration as well. With bigger mods you might need to drill a 3" hole on the drivers side of the housing & the zoodad mod to feed it more air. Runs about $200-$225 3) The AFE systems are popular for the 7.3L as well. Many folks run them with excellent results. 4) stay away from the K&N systems for this application, they tend to let too much dust through & can damage the turbo or worse...... I have run the 6637 and Ford AIS. Both have show excellent results on my used oil analysis reports. The AFE has show just as good results as well from other UOA reports I have seen. Are you at Fort Bragg? It's been a while but we were there from '91-'93......:-drink |
I have the AIS plus a 4" MBRP exhaust and I'm very happy with the set-up
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6637 and a 4" turbo back exhaust is the ticket
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Originally Posted by white Buffalo
(Post 7373132)
Anyone have a pic or a link to the 6637 kit that Clay at RiffRaff Performance sells. Been offline for a while and have been seeing his name & kit posted oftern lately.
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I'm actually heading to the dark side and I am going to put the stock filter off a 6.0 on my truck for awhile and see how it does.
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Since you specified a "cold air" intake you've already decided to get the "best" in terms of the "coolest" possible intake air temperature so that narrows the choices to what's best for "Dirt Filtering Efficiency", "Dirt Holding Capacity", and "Inches H2O restriction vs CFM".
The 6.0L Donaldson gives the best combined score in all 3 categories, the 7.3L AIS is almost as good for "Dirt Filtering Efficiency" and "Dirt Holding Capacity", but it has a higher "Inches H2O restriction vs CFM", and the S&B 7.3L Cold Air Intake below might be your best choice if you've a very high HP application. The S&B has a "Dirt Filtering Efficiency" of 99.69% which is almost as good as the 99.76% for the stock filter and at a 785 CFM the S&B only has an 11" H2O restriction instead of the 25" H2O restriction for a stock filter. However comparing the "Dirt Holding Capacity" between filters determines how often you need to service/change them and to get the low restriction of the S&B it needs to be serviced 5 times for each replacement of a stock element and the S&B it needs to be serviced 11 times for each replacement of a 6.0L Donaldson or 7.3L AIS element! At some point I'll pull together all the air filter data I can find and plot a comparison "Inches H2O restriction vs CFM" curve and give a table comparing "Dirt Filtering Efficiency" and "Dirt Holding Capacity". https://h1.ripway.com/ernesteugene/DG5/SB_Box.bmp |
Originally Posted by ernesteugene
(Post 7396066)
At some point I'll pull together all the air filter data I can find and plot a comparison "Inches H2O restriction vs CFM" curve and give a table comparing "Dirt Filtering Efficiency" and "Dirt Holding Capacity".
From what I have read you are a big proponent of the stock air box. When you factor in cost, IAT, and filtering ability I can see why. In your opinion, what is the best filter for the stock air box? I have been thinking about the AEM Dryflow 28-20248: AEM - Dryflow Performance Panel Filter
Originally Posted by AEM
Element is cleanable and is guaranteed for the life of your vehicle
DRYFLOW air filter will NOT void your vehicle’s warranty Delivers up to 99.52% filtration efficiency, based on independent SAE J726 JUN93 FINE DUST Air Cleaner Test Code procedures AEM’s unique non-woven filter media never needs oil, meaning less down time between cleanings and no more chance of over-oiling. It takes the guesswork out of servicing your air filter Filter element is virtually impossible to collapse and is more durable than cotton gauze http://www.amsoil.com/catalog.aspx?code=EAA728-EA
Originally Posted by Amsoil
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