Hondata

Hi,

A few days ago started to data log. already made so,e corrections to part throttle, started from scratch, just using a p30 base map. afr at part throttle is starting to get better, so i data log a 3rd gear pull from 2000rpm to about 5.000 rpm. i was planning to slowly start tuning the high cam as well. but do not seem to get he problem other than high cam fuel map seems to be overlaped with low cam map

The thing is right after the vtec kick in car, kind of bogs and wont rev anymore feels like looses power. no codes thrown

Car is a civic Si B16a2 with a gt28rs

smanager 2.5.0.0

attach data log for your kind review hope i get some pointers

Thanks

I would look at why the battery voltage is jumping all over the place and fix that first. VTEC hesitation could be mechanical (valve contact) or electrical (VTEC solenoid current changes the ground voltage) or tuning. I'd find and fix the battery voltage problem first, then reduce boost (hold the wastegate open) and try to get a good lambda reading into VTEC.

Hondata wrote:I would look at why the battery voltage is jumping all over the place and fix that first. VTEC hesitation could be mechanical (valve contact) or electrical (VTEC solenoid current changes the ground voltage) or tuning. I'd find and fix the battery voltage problem first, then reduce boost (hold the wastegate open) and try to get a good lambda reading into VTEC.

Hondata,

Thanks for the pointers, would check what with the batery voltage variances. and report back