It's federal law that manufacturers MUST PROVE that the modification caused the failure in order to deny a repair. It's not possible to void an entire warranty due to a single mod. Worst case they deny a specific repair due to a specific mod. In the case of a properly installed catch can it's hard to imagine Ford being able to prove a relationship to any specific failure but I suppose it's possible.
As others have mentioned on the forum a lot of ford service techs/mgrs are subpar at best. There’s a forum member who had his warranty denied for coverage of his front torsen diff & they blamed geiser springs.....that is utter BS IMO obviously, but playing devils advocate here seems to me if those leveling springs could be justified as the culprit for a blown diff than any number of engine/fuel system/vacuum issues could be blamed on a catch can if they’re gonna be that “cute” about it.
And I suppose my point is this- at least the springs increased ride height/clearance, add aesthetic appeal for $250-550, at least a tune adds 70-100 damn hp + better driveability/performance all around + you get a scanner/diagnostic device/gauge on top of it & spend $500-750 - & reverting to stock w/ a tune super easy.
W/ a catch can it is arguable- at best- that it provides any long term benefit to the truck. It provides zero performance benefit. Is automatically noticed when you pop the hood & adds another maintenance item to look after. And in the case of the raptor, they’re damn expensive - $400ish+ right? So what I was getting at seems like from a risk V reward standpoint my “mod dollars” are much MUCH better spent toward numerous other things before I’d get a catch can.
I’ll play devils advocate some more. Riddle me this- what do you think would require more $$$ on R&D + hard mechanical parts & additional software, if Ford were to alleviate coking/blow-by w/ a factory installed catch can or by adding port injection on top of DFI? Preeetttyyy sure you all know the answer to that.
So if a catch can was the answer why the hell didn’t ford take the cheap way out?
Doesn’t ford offer a catch can on the “super mustangs”? I seem to recall GM has em on copo camaro maybe ZL1....but on the “clean side” which leads me to believe while it’s somewhat functional it’s also there for aesthetics.
Anyhow- since there are some instances of manufacturers providing catch-can system in some form, if they were truly the savior of DI/FI engine platforms then WHY doesn’t ford offer from factory? WHY would they spend 10000x more $$$ adding port injection instead?
Lastly- all else being equal I’d love to the inside of the intake tract/plenum on 3 raptors @ 75k miles. 1 stock running 87 octane, 1 stock running 93 octane only, & 1 stock aside from catch can running 93 only.......why you ask? Because I believe you’re going to see a lot more of the carbon buildup you’re so concerned w/ running 87 octane & I think there’d be no discernible difference w/ the naked eye between the stock on 93 vs the stock catch can on 93
I think Ford wanted to be able to market the F150 - raptor included - as able to run on 87, especially since they’re so big out west where 93 is less common.
Do you all not think there’s some sense to all In saying here?
I’m not against catch cans per se, I think there are instances where they’re useful/needed- most of the time being scenarios where you’re running forced induction on an engine platform not originally designed for it. Like adding a SC to a gen 1.
While absolutely not apples to apples, I can tell you from personal experience when I took my intake off the LS6 in my vette after 35k miles (over 16+ years mind you) in order to port it a bit, while yeah it was “sooty” it wasn’t any more buildup than you could scratch through w/ a man’s fingernail.
When I add A&A blower to vette in spring it’ll get a catch can. My DD raptor w/ port injection guzzling 93 octane exclusively, under warranty? Nope.
