Different airfiler location .

[replica_rs4]

What are your opinions on placing air filer in a battery location behind fake firewall. I would modify firewall with a bulkhead type fitting and wrap firewall with a heat reflective foil. I'm sure it still get hot ,as turbos sit pretty much right below, but that has to be better then sitting right next to exhaust manifold.

Thanx.

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[MacDaddy]

I thought about this too, great place to get cold air from i just dont want to do it on my daily

[wbrunner23]

Audi did this with their TT concept - definitely a good location if you're cool with relocating your battery.

http://fourtitude.com/features/Misce...ing-prototype/

[88ninety9]

^huminahuminahumina

[replica_rs4]

Audi did this with their TT concept - definitely a good location if you're cool with relocating your battery.

http://fourtitude.com/features/Misce...ing-prototype/

I see they have kept a snorkel thing from behind the grill leading into fake firewall. Make sense for extra fresh air. Wonder if it was necessary . We have ac plumbing in that side of firewall.
I also forgot about a strut bar behind firewall, cant fit big enough of pipe to connect to y pipe. I would have to cut 2 smaller holes , like 2.25 to 2.5 inch . Connect to individual turbo inlet.

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[christianb5s4]

Oh my, that TT looks so clean. Very interesting article on it too.

[FlyboyS4]

What are your opinions on placing air filer in a battery location behind fake firewall. I would modify firewall with a bulkhead type fitting and wrap firewall with a heat reflective foil. I'm sure it still get hot ,as turbos sit pretty much right below, but that has to be better then sitting right next to exhaust manifold.

Probably not worth the effort.

[replica_rs4]

Probably not worth the effort.

I'm going for it. Factory airbox space will used for a vent / catch tank .

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[FlyboyS4]

I'm going for it. Factory airbox space will used for a vent / catch tank .

Try and do a good job at documenting the before and after intake and ambient temps.

[replica_rs4]

Try and do a good job at documenting the before and after intake and ambient temps.

Unfortunately this is no longer possible . Car is already taken apart and I have zero previous logs.

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[replica_rs4]

New intake and catch can .


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[OllieOxenFree]

So will you be using stand alone or are you going to get a MAF in there somewhere

[replica_rs4]

Standalone . link g4 thunder .

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[wbrunner23]

Updates? I want to see the finished product.

If somebody wanted to run this with a MAF in place, I bet you could get 6" of straight after the bulkhead and before the split. If not, some flow straighteners would help. I didn't realize how little space there was back there with the fuel lines in the way.

[replica_rs4]

Updates? I want to see the finished product.

If somebody wanted to run this with a MAF in place, I bet you could get 6" of straight after the bulkhead and before the split. If not, some flow straighteners would help. I didn't realize how little space there was back there with the fuel lines in the way.

There is a factory strut brace behind fake firewall, if you take it out you could deff run single 4 inch pipe thru. I chose to leave strut brace and do 2 in 1 . Kinda hard to see in pics 2 pipes are 2.25 inch then it goes 4 inch oval to 4 inch filter. All this is done to clear strut brace.
I'm sure with more thought maf sensor could be placed somewhere.
As far as any updates , it will still be awhile. Standalone and flexfuel is just beginning stage of my project. Once every single part is delivered I will make a build thread.

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[JVD]

Another option for you MAP only dudes could be headlight ducts in place of the high beams. Just a thought...

[julex]

Looks toe me like you're choking your intake this way, 2 x 2.25" pipe is about 8insq of area while 4" pipe is over 12 insq... And with smaller pipe you get less flow anyway due to friction at walls... plus split from 4" to 2.25" is probably not helping here either... But I guess it is a moot point since these 2.25" will directly connect to turbo inlets so it should be ok.

[replica_rs4]

I feel this should be at least a small improvement over carbon y pipe I was running before .

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[MacDaddy]

Looks toe me like you're choking your intake this way, 2 x 2.25" pipe is about 8insq of area while 4" pipe is over 12 insq... And with smaller pipe you get less flow anyway due to friction at walls... plus split from 4" to 2.25" is probably not helping here either... But I guess it is a moot point since these 2.25" will directly connect to turbo inlets so it should be ok.

Friction is probably less than expected, the majority of the air travels through the middle of the pipe, kind of the opposite of electricity or signal through a coax where the electrons travel along the outside.

[julex]

Friction is probably less than expected, the majority of the air travels through the middle of the pipe, kind of the opposite of electricity or signal through a coax where the electrons travel along the outside.

Understood, I was trying to imply that once you subtract and layer that's slowed by the walls, the remaining diameter is fairly small and thus will create back pressure. But again, these are exactly the same dia as turbo inlets so it should work out ok.