Custom Exhaust I made for my S4

[JPM-Engineering]

Hi guys

This is the custom exhaust ( not finished yet) that Im doing for my car …tig welded ( Im not the best one to weld as you can see Grin) but its ok. today Im going to modified the Stock Mufflers will post more pics later , why Im doing this , well , in my country you can't use aftermarket mufflers and pass the TUV .
Hope you enjoy.

[rockstar]

Looks good!

[Mr. Corey]

looks nice!

[JPM-Engineering]

Thanks guys

Here are the OEM b6 s4 Mufflers

[Denker]

Awesome pictures! I've wondered what the internals looked like. Now I know...now I know. Way fancier than I imagined.

I see the last pic has your custom work on top; I hear drone in your future. Can't wait to hear about the results regardless and am glad to see someone take on a project like this.

[JPM-Engineering]

Thanks Denker

The muffler its not done yet Im planning to ad perforated tube and do and Y pipe to the 1 inch side , hope it will be a little to no drone…
will do more work and pics tomorrow.
Regards.

[Guitarmageddon]

In the section just prior to your xpipe, is there a particular reason you just didnt use one section of pipe on each side as opposed to the multiple ones you welded together?

[JPM-Engineering]

Yes Guitarmageddon but while I was doing some calculations I made a mistake , that is why you see to many soldering.
Regards.

[CLEANA3]

Nice and clean

[SurferD]

Great job! Maybe you could make plans so others here could do the same.
I would be totally into making one.
What type of welding are you doing?

[gottaBdope]

I'm not QA for welding, but ut looks great! Assuming you're in Germany like your profile says, it's kind of funny that the motherland of all our cars doesn't allow an aftermarket exhaust. :-) Keep it up man, in for results.

[gcoy]

COOL !! very nice work

[M3PowerPlay]

Nice work! I'm no welder, but the welds look good to me.

[JPM-Engineering]

Thanks guys
first impressions .. NO drone the sound its so much improve over the stock pipe, doing a vid so you can see , the car its a little more reactive , from 6000+ rpm better did a quick hp measure with the race-logic and its about 5-8 hp increase well Im going to see tonight the diff , ( the car still has the main cats intact , As soon the test with the catback its done Im going to take them out and se the diff , then JHM tune )
Regards.

More info of my test on the S4 here

http://audirevolution.net/forum/index.php?topic=1437.0

[JPM-Engineering]

Great job! Maybe you could make plans so others here could do the same.
I would be totally into making one.
What type of welding are you doing?

Tig weld








Not the best welder but Im trying jejej

Doing this its very time consuming I did this just for fun .. the total cost its only 220 dollars for me.
Regards

[308slegs]

Tig weld








Not the best welder but Im trying jejej

Doing this its very time consuming I did this just for fun .. the total cost its only 220 dollars for me.
Regards

HOLY CRAP!!!! You sir, have more than just skill, you have God-given talent! that deserves to be on display, not tucked away underneath a car where you can't see it. I'm a certified welder, and I couldn't do that high quality if tried... Damn you are good!

[SurferD]

HOLY CRAP!!!! You sir, have more than just skill, you have God-given talent! that deserves to be on display, not tucked away underneath a car where you can't see it. I'm a certified welder, and I couldn't do that high quality if tried... Damn you are good!

I agree it looks great. I'm a AWS certified weld inspector and I don't see any flaws from the pics. I'm a pathetic welder myself but I know what it's supposed to look like.

[Guitarmageddon]

It looks great....but when can we hear it?

[JPM-Engineering]

Hi guys...
Big thanks for the props ... !!
Will make a little vid this weekend for sure ...

Some test I have done since I got the car , I like to test every part and see what its does .

Stock best

6 degrees Celsius
70% humidity
93 v power
no spare wheel and tools
1/4 fuel tank

0-100 5,7 seg 0-60 5,4seg
0-200mts 8.9 seg at 130,2 km 80,90 mph
0-400mts 13.8 at 164,7km 102,33 mph
0-1000mts 25 seg at 213,1 km 132,41mph
100-150km 5,7 seg
100-200km 15,3 seg
0-200km 21,1seg.

Piggie pipes Best( main cats intact)

5 degrees Celsius
78% humidity
93 v power
no spare wheel and tools
1/4 fuel tank

0-100 5,7 seg 0-60 5,4seg
0-200mts 8,9 seg at 131,4 km 81,64 mph
0-400mts 13.7 at 165,7km 102,9 mph
0-1000mts 24,9 seg at 213,5km 132,66mph
100-150km 5,5 seg
100-200km 14,9 seg
0-200km 20,5seg.

Piggie pipes and 2,5 xpipe catback ( best so far)( main cats intact)


14,5 degrees Celsius
79% humidity
93 v-power
no spare wheel and tools
1/4 fuel tank

0-100 5,5 seg 0-60 5,1seg
0-200mts 8.8 seg at 131,4 km 81,65 mph
0-400mts 13.6 at 167,2 km 103,9 mph
0-1000mts 24,7 seg at 214,1 km 133,1mph
100-150km 5,5 seg
100-200km 14,7 seg
0-200km 20,2seg.

For every 10 degrees aprox its about a tenth and almost 1mile more ( trap speed) and about 8-10whp , all this test its done via p.box ( Racelogic) on the same track.
The catback its good at the same temp and humidity 1 to 1,5 tenth and about 1 to 1,5 mile of trap speed , good improvement over the oem catback with just piggie pipes , now its time to take the main cats out and see the diff ,one question over here how much more do you think it will improve without the main cats? I know with the JHM tune the car will wake up but I still questioning to take or not the main cats or not...
Thanks.