Compression Ignition Addict
Join Date: Aug 2007
Location: New Martinsville, West Virginia
Thanked 52 Times in 50 Posts
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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.
'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