RiffRaff Filter Cover - Ford Powerstroke Diesel Forum
 
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post #1 of 6 Old 01-23-2014, 12:56 PM Thread Starter
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RiffRaff Filter Cover

My intake from RiffRaff just came in today but had a question about the filter cover. I've read on the forum it'll improve the life of the filter but at the same time, will be restrictive. I plan on throwing this bad boy on tomorrow night and wanted to get an idea if I should leave the cover off or put it on.

Thanks!

'97 4x4, 6637 Riffraff intake, 4" Straight pipe
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post #2 of 6 Old 01-23-2014, 01:03 PM
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I put one one of their filter covers on mine and didn't notice a damn bit of difference! My truck is chipped with bigger injectors so I think it definitely takes in more air too, and I haven't felt the slightest difference in performance. I'd say put the cover on too and don't worry about it.

1996 F250 7.3 PSD 4x4 - "Dally"
274k miles
It's got some go fast stuff
Sitting on 2006 F-350 axles and suspension

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post #3 of 6 Old 01-23-2014, 01:27 PM
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Second


.

Matt
'97
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank

-Oh, and a 2015 F350 6.7L DRW 4x4

Re-pinning '97 Cali PCM to Federal
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post #4 of 6 Old 01-23-2014, 09:16 PM
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I've actually measured the resistance of this. I stuck a fairly sensitive vacuum gauge in the backside of the filter. With and without the filter cover there was no difference in negative pressure, meaning no restriction caused by the cover.

Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY

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post #5 of 6 Old 01-24-2014, 04:48 AM Thread Starter
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perfect thanks for the replies guys I appreciate it!

'97 4x4, 6637 Riffraff intake, 4" Straight pipe
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post #6 of 6 Old 01-24-2014, 02:47 PM Thread Starter
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everything went smooth but now you can really hear my EBPV opening up

'97 4x4, 6637 Riffraff intake, 4" Straight pipe
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