A/F Tuning Issue

PRJ3CTM4YH3M · Post by **PRJ3CTM4YH3M** » Mon Nov 28, 2005 2:50 pm

Using an external wideband gauge i have noticed something that bothers me that seems to have only started occurring since adding K-pro. Whenever, i initially increase throttle input, whether at 6k rpm or 3krpm, the A/f ratio goes really lean (close to 16:1) for a split second before going rich (open loop). This concerns me. How can i tune this out? its not the A/f tune itself. could it be injector pulse width?

K20z1
DCRH
CAI
60mm exhaust
Hondata IMG

running itr cam/dcrh/cai map for k20a2-- a/f tuned

Thanks
Matt

Razathorn · Post by **Razathorn** » Mon Nov 28, 2005 3:29 pm

PRJ3CTM4YH3M wrote:Using an external wideband gauge i have noticed something that bothers me that seems to have only started occurring since adding K-pro. Whenever, i initially increase throttle input, whether at 6k rpm or 3krpm, the A/f ratio goes really lean (close to 16:1) for a split second before going rich (open loop). This concerns me. How can i tune this out? its not the A/f tune itself. could it be injector pulse width?

K20z1
DCRH
CAI
60mm exhaust
Hondata IMG

running itr cam/dcrh/cai map for k20a2-- a/f tuned

Thanks
Matt

What does the stock wideband say in your datalogs?

PRJ3CTM4YH3M · Post by **PRJ3CTM4YH3M** » Mon Nov 28, 2005 5:15 pm

it spikes to 16:1 then goes rich IOW follows the wideband gauge (innovate xd-1)

locash · Post by **locash** » Mon Nov 28, 2005 11:24 pm

Sounds like a throttle tip-in setting.. Although, there is no provision for adjusting this in the k-pro for some reason.. Future addition perhaps?

Does the car stumble at all when this happens?

PRJ3CTM4YH3M · Post by **PRJ3CTM4YH3M** » Tue Nov 29, 2005 8:43 am

no, doesnt seem to. on my r6 sportbike, i had a dynojet power commander (like an advanced fmu). it had a provision to temporarily increase fuel upon initial acceleration.

Razathorn · Post by **Razathorn** » Tue Nov 29, 2005 2:24 pm

Can you post a calibration and datalog of this happening?

Thanks,

Wayne

PRJ3CTM4YH3M · Post by **PRJ3CTM4YH3M** » Wed Nov 30, 2005 8:17 am

heres a print screen of two instances , i didnt want to post the whole datalog as its long

Razathorn · Post by **Razathorn** » Wed Nov 30, 2005 10:55 am

People aren't going to be able to do much without your calibration and datalog. Just open the datalog where it happens, set a new start and end point to the datalog and save it as another file. Upload that .kdl and the .kal calibration file.

PRJ3CTM4YH3M · Post by **PRJ3CTM4YH3M** » Wed Nov 30, 2005 1:25 pm

how do you set a new start and end point?

Razathorn · Post by **Razathorn** » Wed Nov 30, 2005 2:53 pm

PRJ3CTM4YH3M wrote:how do you set a new start and end point?

Pull up the datalog graph and click at the point where you want it to begin. There should be either a right click option or a drop down option on one of the menus at the top of the screen to set new start point. Repeat process for the end point, save datalog as a new datalog.

A/F Tuning Issue

A/F Tuning Issue

Re: A/F Tuning Issue