fsi / carbon buildup

[thejimrose]

no kidding!? great now i want an allroad MOAR. =)


On Fri, Jun 6, 2014 at 9:34 AM, Cody Forbes <cody at 5000tq.com> wrote:

> No need for rumor, I've personally seen "5th injector" cars here in North
> America. Every new Allroad I've seen had it, and a few 2014 A4's. they are
> also flex fuel compatible.
>
> -Cody Forbes (mobile)
>
> On Jun 6, 2014, at 11:40 AM, thejimrose <thejimrose at gmail.com> wrote:
>
> > rumor is that the euro audis [not m/a yet] are using upstream injectors
> > [intake] to wash the backs of the valves to prevent / minimize carbon
> > buildup. read any rs4 forum about it, the pictures are a horrorshow. guys
> > rolling in with the ports 50% clogged and putting down 200hp. agreed that
> > it's a 40k service check / job. i think most shops are doing it for a few
> > 100$. it's not a nightmare, just another component to the vag ownership
> > 'character'. trade your cam follower checks / replacements with decarbon
> > treatments.
> >
> > also it sounds like guys running pcv deletes, catch cans, and frequent
> > seafoaming in the intake still doesn't prevent the carbon buildup. i know
> > nothing of chemistry but it makes sense that you need some fuel to act
> as a
> > solvent to prevent carbon from forming when the engine is hot, once it
> > forms/hardens during the drive cycle it's probably mostly there to stay,
> > until it's forcibly removed a la media blasting and dental picks.
> >
> > no such issues on my sti. of course the ride quality is like being in a
> > metal trashcan full of hammers rolled down a hill.
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