1999 Busa Exhaust Question

[Emtsuj]

I normally run Yoshimura slipons on, but I put 8" tips (no baffles) on my 1999 Busa. I have a PCIII that is mapped for stock with Yoshimura slipons. With the tips on, my bike sounds good but cuts out some...especially when I decelerate. Does anybody have a custom map for stock with tips?

 

[MFFJM2]

I normally run Yoshimura slipons on, but I put 8" tips (no baffles) on my 1999 Busa. I have a PCIII that is mapped for stock with Yoshimura slipons. With the tips on, my bike sounds good but cuts out some...especially when I decelerate. Does anybody have a custom map for stock with tips?

Try the pair valve mod first, using the marble.

 

[Emtsuj]

I removed the complete pair valve and installed block-off plates right before I put the tips on. The bike still acts like it is going to die when I let off the gas...in fact, it did die a couple of times. I figured it was the wrong fuel/air mixture.

 

[Strife]

Idle adjust might be off some?

 

[The Big Red One]

I could be mistaken here...but didn't the 99-2002 need a diff pc than the 03's and up? I know the early busa's had a 16 bit processor...later ones had a 32. Never heard of a pcIIIusb on a 99 tho...just pcII's? I think 99 needs a specific pc......but don't quote me on it Can't remember at the moment and too lazy to research it

 

[BigSteve]

My 99' has a PCIII USB installed...if that helps any

 

[Emtsuj]

The PCIII will work on a 1999 busa. It is just an update of the PCII. I put the original cans on and have no problems. I also have Yoshimura RS3's that work fine. It is just the tips that give me a little problem. I need a custom map to adjust for the difference. I was hoping somebody had one that would work for stock (except for pair valve removal) and tips. I guess I will have to spend $300 and get it mapped by a professional. Thanks for all the help!

 

[dadofthree]

Good luck brother