Rob NZ

Thank you Phil. Good points. Co is zeroed but I should check/calibrate the throttle closed position.

Hello all. Thank you for your various replies. By way of an update I have tracked down a Bosch LSH-24 Lamba sensor and I will try that when it arrives. In the meantime I have carried on tuning the maps with the Lamba Sensor off. In this regard I have observed Lucky Phil's comments and I am leaving the acceleration map alone and focusing on the fuel map. I have put a mark on the throttle and some masking tape on the throttle body. Using Guzzi Diag I have put lines on the masking tape corresponding with a number of throttle opening points with reference to the fuel map so I know where I am on the map when I am riding. I have been increasing the fueling particularly at the smaller throttle openings. The improvement is dramatic. The bike was running lean (probably exacerbated by the air box mods). The motor now pulls smoother and is more eager to accelerate. It is particularly noticeable when you blip the throttle for gearchanges. So will report again but thank you all again in the meantime.

Hello ScuRoo Thank you for taking the time to respond. Until my post I had not been on the Forum for some time due to the distractions of buying and working on my Ducati, rebuilding a tractor motor, winter and life in general! But I am now back working on the Guzzi tune. I have looked at your earlier thread about the Bosch LSH 24 probe and trying one of these will be my next step. In passing I should say my tuning work to date has significantly improved the riding experience. The motor is so much sharper that the gearchange now feels slick in comparison to how it was! I will report back when I have tried the LSH 24 probe. It might take a while. Thank you again.

Hello Marty Thank you. No I had not seen this. Sorry I will have a look it may just what I need!

Hello All I have been following the forum for some time now but this is my first time posting. I enjoy the forum and really appreciate the information and support. As you can see form my profile I have a 2004 Rosso Corsa. It has done just over 60,000KMs and it is a nice bike to ride. I have tuned it many times using the "decent tune up" protocol. It runs well except that every now and then it will cough when blipping and changing down and cut out. It is stock except that some time ago I did the "Phil teardrop mods" to open up the airbox. It still has a paper filter. The cough and cut out issue was there before the mods and has not changed since the mods were done. My bike has a Lamba senor. More recently I downloaded Guzzi Diag switched off the sensor and started tuning the maps. It's a "rabbit hole" for sure but lots of fun. I have cured the cough by enriching the fuel map at low revs/throttle openings. The engine also runs smoothly now when in traffic at 2k to 3K revs with no lean stumble. The only issue is the underlying stock acceleration enrichment map which of course cuts in when you switch the Lamba sensor off. Except for wide throttle openings at low revs the boxes in the matrix are all at 107 which I think can not be right I have modified mine but I am not sure how far I might be out because I am just tuning by "seat of pants". Can anybody help me with a bin of an acceleration enrichment map from a none Lamba bike which might help as a cross check/starting point? Thank you Rob