dont you guys have emmissions??

 

You are absolutely and completely incorrect.....
You actually get about 95% (pulled that number out of my wazoo) of the gains with a standard OEM exhaust.

I believe this has something to do with back-pressure.
Either way, here is a dyno chart of the test-pipe using nothing but the stocker.

By the way, that's all I have on mine as well and I'd be willing to bet that I got more of a gain from my Test pipe with OEM exhaust than you did with your aftermarket full set-up.

Dyno Charts

These gains are at the WHEELS on a Stock A4 B7 Quattro.

RPM HP Gain TQ Gain
2100 19.42HP 48.88TQ
2400 14.02HP 30.70TQ
2600 12.55HP 25.35TQ
2900 13.40HP 24.28TQ
3100 11.24HP 19.05TQ
3400 8.73HP 13.49TQ
3600 10.45HP 15.26TQ
3900 11.47HP 15.43TQ
4100 4.39HP 5.63TQ
4400 8.24HP 9.84TQ
4600 9.12HP 10.34TQ
4900 8.80HP 9.43TQ
5100 10.63HP 10.95TQ
5400 9.68HP 9.42TQ
5600 9.71HP 9.11TQ
5900 8.35HP 7.44TQ
6100 12.22HP 10.50TQ
6400 10.66HP 8.75TQ
6600 15.00HP 11.94TQ
6800 17.45HP 13.49TQ

 

How bad does a test pipe smell and why??

 

nop

 

it eliminates the cat so your car constantly smells like rotten eggs.

 

well i guess i need to order one, whats the site??

 

It really smells like rotten eggs or is that an over exageration and when does it smell while ur driving, just after driving, when ur car has been parked a while does it still smell, I mean does it just smell like the car is constantly ripping *** no matter what shape or form its in??

 

thats what i've heard. while driving. not really inside the car but around the outside especially the rear (obviously). its a very sulfuric smell aka rotten eggs, stink bombs or hot egg salad!

 

It doesn't smell like, "rotten eggs"......they're having fun at your expense.

The pipe is illegal in most states due to smog and emissions regulations.
If your car is Quattro, there's a very likely chance that the car would pass smog testing.

The reason is that you're ok with emissions at idle with the test pipe.
The machines are not able to test AWD under full load, so you have no worries.
If you have a FWD with a test pipe, it will be tested under full load and not pass emissions standards.

Not to mention, in CA, you do not have to smog new vehicles until they are older than 6 years.
You won't even be glancing at a smog machine until after 2012.

As far as the gas smell goes, it's not bad in my opinion.
If you have the car in the garage, you will smell it almost immediately.
If you stand at the rear of the car in the area of the exhaust, you will smell it.

Otherwise......at almost no other point......do I smell gas / exhaust with the test pipe.

Too much bad information floating around on the subject of test pipes.

 

so no smell of sulfur at all?