They tell me if I bypass the cat I can gain 15hp just from that mod, but what about the 02 Sens. won't it cause the check engine light to go off?:





is there a kit that is sold for B6 models to bypass the cat and have an adapter for the 02 sens:


just wondering before I go mess my car up..







thanks.,

 

approx 5/10% and no the o2 sensor wont know the cat is there so wont throw the CEL on but the o2 sensors must remain in the system

 

you'll get some gains but it won't be anywhere near 15hp, unless youre already heavily modified with a huge turbo, etc...on a stock or semi stock a4, bypassing the cat will probably get you 2-3hp

 

thanks,


there is no kit for B6 models?:


...


godspeed'

 

so what should I do first to get this puppy going faster?

intake?
cat?


my model came with the sport package, 17" and suspension... but now I want a bit more power.... blow off vaulve?







thanks

 

no bov unless you hvae it recirculate. chip yoru car new dv, get full tbe. then get a bt

 

the BOV im sure is for sound only and the A4 doesn't like it so go for the DV

 

sorry newbeeee here, I was a probe GT driver for a few years and now moved into the audi world,,,,










what is DV:?










lol

 

Dump Valve a pressure relief valve for the turbo

 

dv in the states is also refered to as a diverter valve. but saime thing avant said