BMW BOX

Power : 55+ RWHP
Torque : 75+ Ft lbs of Torque
1/4 Mile : 11.8-12.9 sec
XEDE Software

Hi-Flow stainless steel exhaust:

Blow-off Valve Kit

and finally, to keep your 335i cool, get a new intercooler:

Wow look at that rear end! Now here’s some fine lines on this v10 coupe (Hartge H50 V10).

Many members of m3forum.net have actually tried the $100 headers from e-bay. You can choose from the black-ceramic coated headers or the stainless-steel JVT headers (which are of the same style as the SuperSprint V2 headers). In fact, there are dyno reports and proven gains of 25-30 rwhp and 20-25 rwtq with these headers. It is expected since you are deleting the factory catalytic converters from the exhaust stream. Those numbers are WITHOUT aftermarket software to take advantage of the headers. Pretty good bang for $100 shipped! (thread example: )

I had the opportunity to test drive a car that had the Borla exhaust (I’m talking just the muffler, not any of the other Sec I, Sec II, Headers…), another car that had the Masterschaft SuS, and finally a supersprint. Personally I liked the Masterschaft rumbly, droney, throaty sound that I heard. It’s just so raw and naughty but not too loud like the supersprint. The performance was probably pretty free-flowing, but I don’t know the exact numbers. If you want a more professional sound, go with the Borla and their anti-rasp mid-section. I don’t mind the rasp around 3500RPM… it reminds me of this killer I6.

I put the Masterschaft SuS on my E46 and I’m hoping to hook it up to: evosport headers, Supersprint cat section, supersprint sec II. That should give a pretty mean sound and good flow!

When I get it all set up, I’ll post some vids, and exhaust notes here. I’ll try to run off and get some exhaust notes before the Sec I/II and before headers also!