Need More Speed

[RaynTerror]

I've been browsing through other posts trying to get some ideas on what to do to my Busa to give it more power. I'm not familiar with modifying a fuel injected bike, so i could use a little help. i was thinkinkin a 4-2-1 exaust for starters, but i don't understand how to make it run right. i keep seeing PCIII(what is it?) mentioned when doing an exhaust upgrade. does it automatically correct the FI system or do you have to take it to a dyno? sorry 4 sounding so ignorant on the subject. but i won't know if i don't ask. I'm use to just having to rejet the carbs.... PLEASE explain to me what items i should purchase and about how much it will cost me.
THANKS!

 

[cache]

if you can only afford the exhaust, it's gonna be fine. the f.i. will be fine, no tuning needed.

if your gonna buy a pipe and a pc3r, then get it tuned.

 

[cache]

pc3 is a power commander and is used for fine tuning the bike.

 

[FLCN72]

Electronically controlled fuel injected bikes, like the Hayabusa, have computers that control the fuel/air mixture. A Power Commander is another little computer that is plugged in between the stock computer and the throttle bodies. This new/additional computer lets you modify the fuel/air mixture at various points in the RPM band (these settings are called a map.) All of this is similar to jetting a carbed bike, just much more adjustable.

Depending on the year of Hayabsua you have, you'll need different Power Commanders. PC3R works for 2002 on up. PC2 should work on 1999-2001. But check the Power Commander web site to be sure. Be sure to buy the correct one and the one intended for the Hayabusa -- different bikes have different wiring harnesses.

 

[dezzy7]

Most will probably tell you if you are going to invest in a full system then at some point in time you are going to want to get a PCII or PCIII to fine tune the exhuast

 

[CYCLEERIC]

get the PCIIIr , the most adjustabilty for the $$$$. It controls the timing and fuel with the same box .Take it to a dyno for the tuning with a good mechanic .

 

[RaynTerror]

will the pcIIIr elliminate the top speed limiter??? or do i have to purchase a different item?

 

[grabntwist]

no the Pc3r will not you will need a TRE (timing retard eliminator) to yank the limiter. The're about 50-70 dollars

 

[RaynTerror]

where do i get a TRE? Suzuki dealer???

 

[grabntwist]

Do a search for Ivan's TRE or try Hardracing.com

 

[RaynTerror]

thanks, grabntwist! i found it at www.ivansperformanceproducts.com
i'm ordering mine this weekend for $70!!!

 

[fstbusa]

no the Pc3r will not you will need a TRE (timing retard eliminator) to yank the limiter. The're about 50-70 dollars

or about $0.50 if you have some ambition.

its just a resistor that has the same impedance as the one that you have for 5th gear.

 

[pure_ego]

I thought that doing the tre mod was actually proven to slow the bike down in a 1/4 mile?

 

[cache]

please dont get me started Ego!

 

[BusaFever]

 

[Let 'er eat!]