I'm about to install a yoshimura RS5 full system over my stock exaust and I'm a bit curious to what will happen with torque during low rpm below 5000,I'm not in to the powervalve system and what it does so I have no idea what to except when removing it,can anyone say?

 

If it`s not already to late before your install, the valve is just to get the bike past emisions and sound tests below 5k, mine ran better without it. When taking out the cables from the servo, mark the original position of the servo so you can turn it back to where it was when you`ve took the cables out, or the F1 light will come on and bug you.

 

Actually Yoshimura mentions that is not nessesary to remove cables from your servo just tie them securely and leave them working,how come?also what is F1?

 

He meant FI (fuel injection) not F1 (the race car).

 

My bike has this system and it use to be pretty tame below 8,000 RPM, I installed the pipe and now it is a ANIMAL starting at about 5500 RPM or so...the best improvement I could have hoped for.
The cabels do stay attached and zip tied out of the way...

 

sorry,what pipe do you mean?

 

So good to hear..gonna go with the same set up you have....any suggestions for bringing up below 5k though (someone was telling me about Cams???) Any suggestions besides gearing?

 

sorry again but that pipe mentioned above made me curious,I don't understand what does it mean,I'm affraid I'll loose a lot of torque on low revs

 

are you racing? the reason i ask is because i would always suggest against a full system otherwise. i did it once and even had it professionally dynoed at a very reputable place and it was never the same again. i mean freeway riding was a blast but everyday use and the occassional weekend rides, were a pain. just get a slip on. its cheaper

 

no,I'm not,actually I found out the advantages of a slip-on after I bought the full-system,although a lot of people claim that a full gives you the same torque low as the slip-ons.