AH64ID
TDR MEMBER
The Link I posted, the Owner had 19% water Tested at two different facilities, He had the Airdog 2mic filters, if those filter can't stop 19% water then what are they?M1 and AH6, it would be next to impossible for any type of contamination to get by your setups. It's those aftermarket deceiver's that are getting My attention I have challenge them on More then 1 occasion, And none have taken up the offer.
The AD is not the end-all be all filtration system that people want you to beleive. First its not a 2um filter, its a 5um filter. The f/w separation rating on the AD filter is 50% free water and 0% emulsifed water... In short the Baldwin PF7977 in the OE cansiter is a better overall filter than the 2 AD filters combined!
When AD is confronted about worse overall filtration about stock, their comment is "we haven't heard of any issues". . So it seems we get the same results with the companies... Bottom line is, know the specs of the filters on your truck. . don't just assume they are good.
FASS is no better. . except the Platinum.
That's all well and good. But, what is the pressure going up a 6% grade towing 13,000#?
Newt
I have 3 filter and the stock LP. I haven't ever seen below 5psi WOT (good filters), and less than 6psi towing up some steep grades at 90% throttle... The stock pump is good for about +100hp over stock and keeping 3+ psi.