A little bad experience for the T & B 'Busa. I had upgraded to a later model fuel tank with internal Fuel Pp. After many, many Klm's the bike started to surge every now & then, was slowly going down on power, I cleaned the K & N, threw new plugs at it, cleaned the throttle bodies etc, bike had mild improvement but still showed signs of either running lean/Fuel or having an electrical problem. As a lot of my recent miles have just been up & down the Highway (Over policed Hwy 1 Nth Coast) where I haven't been over about a dollar twenty. It wasn't till I gassed it hard (3up) to overtake a B Double that at 61/2-7thou'rpm the engine went flat and wouldn't pull the skin off a rice pudding, some short shifting of the gears and my nipping gear, seen us safely past the B Double...just! Straight home, into the shed and start pulling the ol' girl down. It felt like the PC3 had Zero mapped. Hooked the PC3 up to the laptop, it didn't want to communicate, uhha, problem found?? one dead PC3!?!. Quick call to Pitstop Pete, we concurred, best option, upgrade '99 ECU & Stator to 2001-'07. Something I had been wanting to do for some time, as flashing the later model ECU imo is a better bet than a PC3. I had also checked Fuel Pp at this time, all good at 43psi. I made a fatal mistake of not checking the Fuel Flow rate!!
A call to Maj, seeking his valued advice, (one of several calls to him over the next couple of day's) Maj had a spare ECU & Stator, so I snapped them up and as soon as they arrived I was fitting them. A quick check with Maj on which wiring pins to change & go where. I fire the 'Busa up and it is still sluggish. I warm it up & give it a big rev', no load, no rev' over 7thou, shooting flames and exhaust hot as hell. Whoops, exceptionally lean, shut it down, pull out the fuel Pp, put it on the bench & dismantle it. Grab the black plastic body/filter, back flush it, shake the shit out of it and watch the muddy crap flow out of it, place it into a container full of petrol, wash it, shake it, blow through it with HP Air, wash it again then reassemble it all, even Jen was getting her hands dirty, helping me clean the filter. Reinstall the Fuel Pp into the tank, hotwire the fuel Pp& check the fuel flow rate. 250ml in 10 seconds, 750 ml in 30 seconds, 1500 Ml in 60 sec's. Just what we are looking for. Maj say's 5cc's per hp in 60 sec's ( roughly 175 HP X 5cc = 875cc or Ml) Okay, flow rate is excellent, time for a test ride. Bundy is not letting me go without her, so up on the tank, hooked up, let's go. I head south down the over policed Hwy at 100kph, Bike is feeling more responsive, I turn off for Stuarts Point and then the back way to Scotts Head. I pull over, do a quick check of everything, let Bundy have a nervous pee, I have a nervous pee, climb back on, select first and gas it, straight to 9thou & pulling clean, pull 2nd, front wheel clawing for sky, trees becoming blurred, pull 3rd, still on the gas, wow this bike is pulling harder than it ever has, 4th just got time for 5th before braking friggin' hard for the 25kph right hander, back on the gas in 2nd then 3rd then back on the Anchors for a series of 25kph corners. Arhhh! yes, that smile on my dial that only a sweet running 'Busa can give.
Bundy's happy, she is hanging over the front, give it more dad!!! I'm as happy as a pig in shit. A big thanks to Pitstop Pete and Maj' for their excellent advice and steering me straight.
![Pi_thumbsup Pi_thumbsup](https://www.australian-hayabusa-club.com/MyBB/images/smilies/pi_thumbsup.gif)
Hopefully this episode may help someone else out there experiencing similar problems with their 'Busa.
I will be going to an inline Pp (external) and an external Fuel Filter & Reg'. Filter will be off a Commodore or similar, cheap & easy to obtain.
Watch this space!!
Cheers,
Tex & Bundy