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      01-22-2013, 07:53 PM   #4
spacemonkey1112's Avatar

Drives: E90 325i AW
Join Date: Jan 2007
Location: 818, CA

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Originally Posted by andrey_gta View Post
good luck on your quest. Just be aware on diminishing hp returns on $ spent.

1. headers options, ranked in approx cost hi to low
Supersprint, ARMAspeed, MMW, MXP, diy cut out cat
User mapleridge is also working of a new set

2. Exhaust- you will se gains if you remove the secondary catalytic converters. Other options are mostly for looks & sweet sound.

3. Tunes-
AA has one tune,used to be called stage 2
Othe companies are Eurocharged, OEtuning
They are all kinda equal for a car without the DISA manifold based on all dynos
quick question but will 2nd cat delete put my car at risk of failing a smog test in CA? Thanks!
2006 E90 325i | Sports Package | 6MT | 3IM | PE | AA |