Air intake - Ford Powerstroke Diesel Forum

 
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post #1 of 4 Old 05-17-2006, 05:26 PM Thread Starter
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Air intake

I have a Mac cold air intake on my 99 PSD, are these better than the K&N
or should I put the stock air box back on???
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post #2 of 4 Old 04-20-2012, 04:59 AM
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bumping this to the top. Interested if it is worth the cost of switching to a 6637 filter and cover over this one.
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post #3 of 4 Old 04-20-2012, 06:11 PM
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Never heard of the mac... but have put DIY 6637 intakes/filters on all my trucks, and my buddys. Highly recomend them, why pay big bucks for a name when you can get a great HUGE filter for less?

And haven't heard enough good anything about K&N to ever put one on my trucks, heard too much bad stuff... seems to be mostly related to the drop-in filters made by them for the stock air boxes, but if you scrap the stock air box anyway, just go to the 6637... huge filter, cost about $35-$45 once a year. It's less cost than an oil change, and you do how meny of thoes a year? I do about 10... between 4 trucks, all 7.3 PSD's, so the air filter factor isn't much in the maintnance budget.

Greg

'99 E350 DRW Stahl 11' util box van, 7.3 PSD, stock. 138k SOLD

'00 F350 extcab, 9' utility bed, dually 221k

E'99 F250 extcab, S/Bed 211k

'00 Excursion Limited, 7.3PSD 281k

'84 Chevy K-30, 6.2L TD, woods/trail beater. 141k

Semper Paratus
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post #4 of 4 Old 04-20-2012, 06:55 PM
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My truck had the Mac on it when I bought it, which is why am wondering if I should keep it and clean it, or just go to the 6637. It's a big style filter VERY similar to the AFE.
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