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View Full Version : Modded S4 bumper on A4 - opinions and recommendations please.



genecan
07-29-2014, 01:45 PM
During the winter my car is going to accept a lot of modification based around an EFR 7163 with log exhaust manifold. The set up will need a large FMIC, but I want to keep stealth look with excellent ambient air flow through the front bumper. I thought sometime and came to a view that is including another center grill (trimmed) and side mount for licence plate of an EVO X. I made a collage and thus I am looking for your thoughts.

http://s44.photobucket.com/user/rembrandt/media/S4Bumper-FINAL_zpsdd252f4d.jpg.html

RoadRage
07-29-2014, 02:07 PM
I'm sure a standard S4 bumper would work fine.

gmx
07-29-2014, 05:00 PM
Define large FMIC and you have your answer... the primary problem is height.
You will need side brackets and frame rail shocks if you are Euro-spec judging by your location.

What log manifold are you using? T25 or Vband?

viceprp
07-29-2014, 06:06 PM
S4 is the most spacious bumper out of the 3. You will be fine.

genecan
07-29-2014, 09:01 PM
Define large FMIC and you have your answer... the primary problem is height.
You will need side brackets and frame rail shocks if you are Euro-spec judging by your location.

What log manifold are you using? T25 or Vband?

20-22"x10-12"x3" core without side tanks, not sure what you mean by frame rail shocks - can you link a picture?

As for the manifold - T25.

Corrado_Guy
07-29-2014, 09:44 PM
The problem with either bumper is you can not get the intercooler down low enough to get it all in the air flow. The only way you are getting more flow is to drill holes along the top edge of the bumper right under the grill to allow more air to get in there. I run a FMIC with a S4 bumper and probably just under half of it is under the bumper cover. My intercooler is big enough so that the bumper probably sits about 1/4 - 1/2 of an inch forward and the cover is right against the bumper. My IAT on full throttle is not bad and as long as the car is moving it is pretty cool. I would need to dig through log files to confirm the temps but nothing really stood out there. In the pics below you can see how high the intercooler goes and on the bottom it sits at the same point as the bottom of the rad & condenser. There is a lot of area that does not get full air flow unless you hack up the bumper.

http://members.shaw.ca/vr6_corrado1/Audi_Tbelt01.jpg

http://members.shaw.ca/vr6_corrado1/Audi_Tbelt02.jpg

viceprp
07-30-2014, 12:10 AM
Doesn't get direct air flow like no bumper but still enough that it cools it off. I would never hack up an s4 bumper

GrapeBandit
07-30-2014, 01:36 AM
Doesn't get direct air flow like no bumper but still enough that it cools it off. I would never hack up an s4 bumper

yea, no need to hack up the bumper with holes or cut it out to one big square like some ppl did like mike hoods car or USP's car etc etc etc. on my old gt35r setup I had a 12" tall core mounted without making holes or a giant square ar the outlet side was literally ice cold to the touch even on hot summer days. ppl go to extremea for no reason whatsoever

gmx
07-30-2014, 01:37 AM
10" tall is close, I think you will have to chop the rebar. ER Comp is 11" tall and I needed to cut the entire bottom section of the reinforcement bar (the top slides over it). The IC is still a tight fit, need to shave the centre grill on the left and right edges but that's also due to being 3" thick. The problem with shaving there is that these also act as a brace for the 'weak' pillar - the most common crack point. I still do not have perfect fitment of my S4 bar, the IC is just too big. I have more room to cut/shave but it would make the bar much weaker.
My Evo7-9 IC is 11" tall, probably need to cut the top of the bumper's skin right below the bonnet grill for that one. But it is 2.75" thick and much lighter.

As for exposed surface area, a lot of people cutout the number plate. I would but, illegal for us here.

Are you using a T25 manifold by PSI or one of the Euro tuners?

You need the following parts to fit on euro B5 A4:
The shocks look like this:
http://parts.audiofalexandria.com/product_images/z/649/DA968F45C7AC979752C87392C4D02CC2__50600_zoom.jpg
I think ETKA calls them "brackets". They are longer length on the B5 S4

Parts required for mounting:
B5 S4 Bumper Bracket/Shock Left 8D0807133C
B5 S4 Bumper Bracket/Shock Right 8D0807134C
B5 S4 Bumper Guide Left 8D0807283A
B5 S4 Bumper Guide Right 8D0807284A

genecan
07-30-2014, 02:58 AM
... Are you using a T25 manifold by PSI or one of the Euro tuners?...

PSI would be my last option, I know they fit with actuator bracket and actuator rod modification. There is also the chance that Jabba sport manifold could accommodate it and the third option is the SPA TMA01.

My initial research showed that SPA might be the best option, people think it is the same as ATP, but they have nothing in common. The spa puts the turbo the most to the firewall, it is in between bottom and side mount (more to the side mount position - only 20 degrees of angle) and also there is a slight lateral angulation of the T25 flange plane that opens some more room to run an appropriate intake setup.

Drifter420
07-30-2014, 03:38 AM
Has anyone ran a a4 bumper with a fmic?? It would have more area covering the intercooler compared to a s4 but just curious

GrapeBandit
07-30-2014, 06:20 AM
Has anyone ran a a4 bumper with a fmic??
lol.yeahhh, like almost everyone on this forum.. the 12" tall core I was talking about in my previous post was under a4 bumper

alexvanlewen
07-30-2014, 09:36 AM
What core were you using?

redline380
07-30-2014, 10:05 AM
I use a treadstone tr11, 11" X 21.5" X 3". I got it too fit pretty decently, but I took my ac out.




http://i696.photobucket.com/albums/vv328/redline380/WP_000222.jpg
http://i696.photobucket.com/albums/vv328/redline380/WP_000223.jpg

GrapeBandit
07-30-2014, 10:06 AM
What core were you using?

I honestly have no clue. that was on my old build from 2004-2009. I did get it off ebay, but it was from an individual, not an ebay store.http://i617.photobucket.com/albums/tt258/m1racing_2009/b5/intercooler1.jpg (http://s617.photobucket.com/user/m1racing_2009/media/b5/intercooler1.jpg.html)
http://i617.photobucket.com/albums/tt258/m1racing_2009/b5/intercooler2.jpg (http://s617.photobucket.com/user/m1racing_2009/media/b5/intercooler2.jpg.html)