Thread: Boost issue

Are you on MAP? I have a quite similar tune I could share with you, STI 550cc, SR20VET, T25, 3bar fuel pressure, Walbro 255

And yes, you're not gonna see boost on partial-low throttle.

Sorry forgot to put that in my description, I'm running a z32 maf (draw through). Yea im pretty sure it's just the tune at this point. I have a tendency to over think things sometimes. Lol

Just talked to john, The afr offset can only be changed +or- 2.5. That explains why it would not save for me. He's almost certain it's a grounding issue with my wideband. Gonna reground my wideband to the ecu ground and hopefully that does the trick!

Limits like this should be listed in the help section! @JKTUNING , there's an improvement proposal

Noted. The AFR offset should really never be any more than 1 AFR off in either direction.. optimally it should be under +/- .5.

This is definitely either a ECU ground offset issue or the wrong conversion being used. More than likely the ground offset though since that is super super common!