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E36 318ti exhausts tested

This might be interresting to someone planning on buying an 
aftermarket exhaust system for the 318ti. I noticed that some of the 
systems are available in the US.

The June issue of Sport Auto (German magazine) had a comparison
of aftermarket cat back exhaust systems fot the E36 318 ti. They
dynoed all the exhausts without any changes to the stock chip. They 
used the same car in all their measurements and the readings were 
145.1 hp and 175.7 Nm as stock (factory claims 140 hp and 175 Nm). 
The results for the exhausts were the following: 

Make           Price  Material  Quality   Sound   Power  Torque
                DEM    SS/AS     +/0/-    +/0/-     hp      Nm

Breyton        1201     AS/SS      +        0       +1.0   +2.2
Eisenmann      1023     SS         -        +       +1.5   +0.4
G-Power        1190     SS         -        +       +0.6   +2.0
Hiob            774     AS/SS      +        0       +0.4   +2.8
H+H            1092     SS         -        +       -0.2   +3.3
Lorenz          760     AS/SS      +        -       -0.8   +2.5
MK              784     AS/SS      +        0       +0.7   +1.1
Supersprint 1   700     AS/SS      +        0       +2.0   +3.1
Supersprint 2   782     AS/SS      -        +       +0.3   +0.4
Schirmer       1190     AS/SS      +        -       -1.0   +1.6

Material: SS = stainless steel
          AS = aluminized steel

Supersprint 1-rohr was ranked best in the power gain area. It was the
only one to improve torque over the whole rpm range. The others tended
to improve torque in a narrow (peaky) rpm range. Schirmer was ranked 
best in build quality. H+H got the highest ranking in the sound category.

Note! G-Power, H+H, Hiob and Supersprint 2 will not fit under the
factory bumper since these have 2-pipe tips. The Breyton has only 1
tip but it so big that it has the same problem.

Jari