vds pots racing R1 2004

Il ya le 'y' de raccordement avec ?
Parceque sans, on peut pas virer le catalyseur ce qui rend l'opération pas trop interesssante...

Il n'y a pas le y, mais as tu reagrdé combien de chevaux te fait gagner le Y.
Donc voilà un extrait de la doc de chez akra.

A mon avis renseignes toi bien aavant d'affirmer ce qu tu dis.

PERFORMANCE

Measurements of the Akrapovic SLIP-ON system on the YAMAHA YZF R1 (without optional Y-connecting tube):

Power: performance measurements were made on both systems. The difference is minimal, with the advantage going to the option with the optional Y-connecting tube, which is slightly better in the middle of the rpm range. There is also a slight difference at the top end, but this does not affect the riding characteristics. Despite being only a first-stage tuning component, the system adds quite a bit of power to the stock engine figures. The standard option without the Y-connecting tube puts out 159.6 HP at 12800 rpm. The option with the optional Y-connecting tube was measured at 159.4 HP at 12700 rpm.