Alpina exhaust headers for a m10.Opinions?

[a3ternus]

Hello to everyone reading! :D
I ve installed an Alpina exhaust header from a E21 M10 engine.
What do you reckon this adds bhp and torque-wise to a standard 1,8 M10?
I also have a free exhaust muffler on the car.
My rev limiter is at 7200rpm since 1991 (previous owner).
N.

[Japandrew73]

Pics!!!

[a3ternus]

Pics!!!

I ll upload some soon,even though trust me...its not a looker! :p

Anyway,my front muffler is not only undersized for the car,but also completely broken inside.Its sounds like a tin can rattling over bumps.
This along with unnecessary welding spots over the years (between the front muffler and the rear one) IMHO is NOT a good thing for the flow of the gasses...
I think it strangles the engine,which is good for 115bhp right now.

Do you think its a good idea to replace the whole exhaust from the front muffler backwards if i wanna see an οverall improvement?
A new front muffler and new pipe will set me back 80€.Aprox 100$.
Ν.

[a3ternus]

Do you think its a good idea to replace the whole exhaust from the front muffler backwards if i wanna see an οverall improvement?
A new front muffler and new pipe will set me back 80€.Aprox 100$.
Ν.

I did just that and now the car runs better overall...
N.