Yoshimura slip-ones

[wildone]

I own a 2009 Hayabusa and have "lurked" here for a long time. Have gained an awesome amount of great info from all members. Thank-you! Question: have a PC5 with stock air filter and pipes. Want to install the Yoshimura R-77 slipons to reduce weight and have the exhaust a little louder but not too much.

Do I need to Dyno tune it?

 

[Jacobs]

The simple answer is no....

If you want the bike to run smooth across the RPM range and take the full benefit of having the PC-5 then get the bike dyno-tuned

 

[wildone]

Thank-you for quick reply! Forgot to mention I did have the bike dyno'd stock setup. Only gained a couple of horses and torque from the base map that came with the PC5. Wondering if I should redo another Dyno w/slipons??

 

[dadofthree]

The answer will be the same. No. But if you want it a little better go for it.

 

[kromdom]

try a "canned" tune from Dynojet FIRST and see how your bike runs with the new slip-ons.

 

[Superzuki]

If you think that just a Yoshi will add to the HP, you might be a little disappointed. The manufactures spend millions on computer assisted designing - CAD - to get then most from their designs. You will probably get a bit more acceleration, due to the weight savings. I put a Yoshi 4 into 1 on my '12 Busa, it weighs less than one of the stock mufflers. With the ecu re-mapping it sounds good, throaty, not obnoxious.

 

[Adox]

I just had mine Dyno'd and I have Yosh slip-ons. He said he would do the work to tweak it here and there but it's already running like a champ and I could only expect less than 1% gain in certain RPMs in certain gears. No need to tune it. In short: The gain-to-cost ratio was on the floor. I wouldn't bother either.

 

[wildone]

Hi, just received my R-77 slip-ons, quick question(s)-- what are the "low volume" 8" pipes for and where do u put them? Did u do the rivet placement? Thanks!

 

[twotonevert]

Those insert into the canister and take one allen head bolt. The bolt inserts from the inboard side of the canister. Should be a rubber plug in the hole.