Jeff's DIY turbo build

[Desircustoms]

You definitely need to do some logging to see what's really going on. The bucking seems to be a fuel delivery issue, but I'm far from an expert, the logging would help you figure it out, without it it's all guessing...

Yes I've read fried banzai's blog, great info... He says that closed loop tuning is not easy and that you have to disconnect the battery often so your LTFT don't affect your tune.

When I'll have some tuning experience, I'll be able to shim in more.

And how much of a difference between the OEM sensor and your wideband? I'm hoping I can tune with only the OEM sensor.

[06YarisRS]

Originally Posted by Desircustoms

You definitely need to do some logging to see what's really going on. The bucking seems to be a fuel delivery issue, but I'm far from an expert, the logging would help you figure it out, without it it's all guessing...

Yes I've read fried banzai's blog, great info... He says that closed loop tuning is not easy and that you have to disconnect the battery often so your LTFT don't affect your tune.

When I'll have some tuning experience, I'll be able to shim in more.

And how much of a difference between the OEM sensor and your wideband? I'm hoping I can tune with only the OEM sensor.

I did some logging last night. Unfortunately, the F/IC only produces a notepad document and the alignment is terrible. Columns do not match data at all. I tried word wrap, it got worse. I did open it in Excel, but it actually combined columns and the formatting was brutal. This is pretty sad. It's basically unusable. I may invest in TechStream, like you did.

My wideband and OBD2 are, on average, one full point off. For example if the aftermarket wideband (Prosport Pro gauge, with Bosch 4.9 sensor) reads 14.7, the OBD2 (via Torque) will read close to 13.8.