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      04-23-2009, 01:38 PM   #11
red_stapler
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Drives: 2008 135i- Montego Blue/Lemon
Join Date: Mar 2008
Location: Southern California

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Quote:
Originally Posted by onehungevo View Post
I have been reading through the post when I have time to try and identify which mods create the most power, how much they create, and what mods throw codes.

Here is what I think creates the most from hire to lower...
1. A tune
2. A turbo back exhaust-how hard are they to install and what is the cheapest one available?
3. catless
4. Intake-Do the scoops etc make that much of a difference? I know on an evo the intake didn't do much in terms of power.
5. IC

It would be nice to see some dyno numbers with before and after mods.
Please let me know how much power they make and what throws a code?
1. A tune= no codes and 80+hp and trq
2. Downpipes = no codes and about 50hp and trq
3. Exhaust = no codes and 15hp
4. Intake = no codes and 10hp
5. scoops = not a big difference, but you might as well do it if you do the rest.
6. IC = no codes and 30+hp and trq
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