I have a 550/1300 injector setup and i'm using "5 4 3" as the setting right now in the datalogit. I have a slight stumble at 2300 rpms, will changing it to 7 7 4 cure this? Also, to calculate the sec transition time, the formula is 550/1300 * 1.5 which equals 0.635 and mine is at 1.064. Would that also cause the slight stumble?

My mods are bnr stage 3 non seq twins with all the bolt ons and I'm using Chuck Westbrook's 350hp map for non sequential while I am breaking in the motor I'll be buying those notes from you soon Chuck.

 

Primary/Secondary (%) to 30%. If you log when yours actually switches over and the correlation of when the secondary throttle opens as compared to when the secondary injectors start to flow, you would understand why.

Secondary Transition (ms) to .100. Logging injector transistion and viewing it in chart format will also show why.

The above two has more affect than 7-7-4. I use 4-3-2 for Injector Overlap now.

 

Thanks Chuck, in addition to the things you mentioned to change, should I also change it to 4 3 2, 7 7 4, or leave it as 5 4 3? BTW, I have all the block off plates installed including the double throttle one.