Bon je fouille un peu sur tout les forums, notamment bimmerforums.com !
et les differents decata Supersprint donne pas d'excellent résultat au banc d'essai
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I am install this Supersprint 784302 decat pipe before one week. Here is my 5c about this part.
Advantage:
1. Sound is fantastic (I have also rear SS mufler). Now litle louder but car have one additional deeper noise altogether with original sharp and brisk sound one m3 e36. Sound is more powerfull because original cat section dont have this deep portion sound. Sound is now like combination M50B25 engine and S50B30 engine. Excellent.
2. Entire pipe is lighter and smaller.
Disadvantage:
CAR LOOSE TORQUE IN LOW/MID RANGE!!! Here is dyno test for evidence:
en vidéo >
http://www.youtube.c... ... r_embedded
After this dyno test i am litle confused. In range between 2-3500/min I can feel litle loos of torque, but from 4000/min car pull realy good. Pull like have +20PS in entire range. Maybe this is only one psychoacoustical effect in my brean because car sounds much stronger.
My conclusion:
Original is simply better for perfomance. If I find original section with low miles I will go back to original.
But if you want realy good sound and loosing torque is not drawback for you this is way to go.
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People don't know that original mid-section on m3 e36 is very efficient part. Only "problem" is weight. for euro m3 all aftermarket exhaust parts in global don't have + effect on power. Positive effect is much lower weight and much better sound. High-flow exhaust systems
like this 784302 and 043612 have problem with torque in mid-range rpm.
Tuning exhaust systems on highly tuned engine like this euro m3s is very hard and without regulary dyno-testing you can't know what you are doing.
Petit rappel , le 043612 , c'est le supersprint RACE
Donc pour conclure es ce que ces 2 decata , on un réel gain appart le son et le poids !
personne à un feedback bien précis , passage au banc à l'appuie ...
le type qui parle en anglais au dessus n'a pas de gestion apparemment , sa doit jouer énormément aussi