Runs great on the run, I hear it farting through the Oe exhaust on but the engine seems tobe smoother at highway speed than with the Aftermarket blue flame one, Also stalling seems worse with that to. 25mph 2nd gear its not as jerking with the Oe exhaust on, seems to have more torque. BUT! When stationary and you blip the throttle she wants to cut out and you can Smell the fuel so she's deffo running to rich. New Rectifier New Battery Throttle body cleaned New iridium NGK plugs Injector cleaner New Air filter Oil and filter Vac lines check New Vac line ecu to airbox New Stepper motor 400 miles ago! New Coolant Temp Sensor 400 miles ago! Fuel changed to 95 ron on advice from previous owner On the run she the temp gauge read 77-78, getting upto 83 on a Fast run/working the engine. Traffic see's it in the 90's then the fan cuts in not sure if 77-78 degrees is normal?? Pulling up at a Junction sometimes the rpm drops below 1,000 and she wants to cut out , if your stationary and blip the throttle she cuts out "hot or cold" with the side stand up or down, doesn't matter. This morning the weather was alittle colder and she took a few extra turns to start , she had been a good starter up until today. Really confused
Have you tried downloading a suitable map for the exhaust and reset the tps?? That would be my starting point
No Sir, Tbh the previous owner belived a Local Company in Ipswich mapped the bike to the Blue flame exhaust but the bike/map doesn't like it. I've since fitted the Original exhaust as the bike seems more drivable with that fitted and cuts out less. Also noted that if the bike is reading 90+ degrees the cutting oiut at stationary doesn't seem to happen the rpm's drop but not enough to stall. Map could be the issue. Thankyou for the reply
Thankyou feckless, i've code read it with a OBD11 code reader and scanner and there are no error codes. I've heard of TuneEcu, but no idea how to work it. nor how to get it with the correct lead.
Sounds like iacv hoses are gone.usally where they are attached the iacv. Pretty cheap about £12 each.
Hi t552, all the vac lines from that have been replaced along with the one from the ecu to airbox. Pretty sure its looking like a Map fault. Rang Lings in Ipswich but they were not very helpful, still waiting a phone call back from them. is there anyone breaking a 955i? could always try a 2nd hand ecu
I only have the Bill for the above from the Motorcycle shop, No codes Stored in the Ecu, no warning lights.
A u/s lambda sensor should throw up an error message but it could have been removed without a compensatory map. Imbalanced throttle bodies produce no error code but you need something like TuneECU to see the issue. Rich running suggests no air leaks that are more likely to cause lean running.
So this was one of the New NGK Iridium plugs i put in last week. When this picture was taken id just completed a 100 mile ride.
I've ordered a TuneEcu. and ive got a Map im going to try. Does anyone know if my Bike has a Secondary Air injection pump? I dont think i've seen one on my travels tbh.
Well just done a 3rd cold start this morning with the standard exhaust on, Bike started fine, and didn't cut out, Seem's tobe idling a little higher than usual for some reason and hasn't cut out when the throttle is blipped. Dam this thing has a mind of its own.
The standard exhaust? Leave it on and see how it goes. I am somewhere between sceptic and cynic on ‘performance’ exhausts. I am no fluid dynamics expert but hopefully understand enough to question. Back pressure is actually flow resistance while scavenging is the phenomenon of piston pulses creating pressure variations that help gas down the tube. The length, diameter, baffling etc., of the OEM item are all carefully matched and optimised to the motor. The single biggest selling (and most profitable?) accessory is the ‘universal’ go-faster exhaust. I live on a major biking route and the popping and banging of unburnt fuel in already loud exhausts tell me huge numbers are louder but no faster, nor efficient. Furthermore the ‘loud is safe’ balony fails to appreciate the sound envelope is like the cloud from a steam train - it trails way back where you’ve been - NOT where you are going. Your fuelling issue may have several causes but fitting the original silencer probably eliminates one while making you a better neighbour. Have you checked the look of the O2 sensor in the right hand header? TuneECU will verify your ECU is getting the sensor signals it needs to regulate the fuel/air mix and allow you to accurately balance throttle bodies.
I haven't physically checked the condition of the Lambda sensor, but have the bill dating back 3,500 miles ago. Well managed to find somewhere who will look at it on there Dyno Machine, So i've booked her in Next tuesday fingers crossed hey. Thanks Peeps for all the replies i will keep you posted.
Right got the TuneEcu disc and cable, the TuneEcu wont read the ecu it gets to 40% on the 1st try and then times out?? so i cant read the ecu table. ECU name is 10181 (10152) shortly after it i think. If i start the engine it will read and display the rpm coolant temp etc, there are no error codes either.
Right had the bike on the Dyno, she is 30% to rich below 6k rpm, above its 15% too rich. Trouble is the "Power Commander" is produced anymore for the bike. So im still after a ECU for it if anyone knows of one. Idealy like to get the correct one from a Daytona 955i. She did run 121hp which seeing as she's not running correctly i didnt think was to bad. Either that or is there someone near Harwich Essex/suffolk who knows how to map these? Please i need some help
Dynojet have maps online for your bike https://dynojet.co.uk/mybike/downloads You might see what is required......
