I have installed a wideband o2 sensor on the downpipe to the sbd500x turbo kit. Everything seems fine except for at 2800rpm to 3000rpm i get a weird resonance that i cant seem to figure out where its coming from.
https://datazap.me/u/dholloway543/we...zoom=1160-2425
The O2 #2 Voltage is my wideband. You can calculate the AFR on the sensor with this equation.
AFR = 3.008 * Voltage + 7.35
I used excel to add the Fuel trim combined line and trimmed out the section that is bad.
Any ideas on what might cause it would help out alot