Need Help with my 1jz

[JCP]

Okay... are there any signs of upgraded ct12a's other than dropping the downpipe and y-pipe, or turning the boost up to see if she blows... etc?

Also, has anyone with a wideband recorded what their a/f's are while @ a 4th gear pull?? I've turned the boost up to between 13-14psi and in a 4th gear pull my a/f's are anywhere from 10.3-11.1 @ 13-14psi. Is this normal for stock injectors/ecu, or is this an indication of upgraded fuel management/ecu programing? I have searched around and cant find anyone who has reported their results with a wideband.

Can anyone help with one or both of these?

Thanks!

 

[Ric]

Bone stock. 1ZJ's run pig rich. Heres my dyno chart on wideband on turned up boost, stock everything else.

 

[JCP]

What was your boost @? I hit fuel cut @ around 14psi. Also, if they run so rich stock... there is so much more room for booostage.. oh well, i have a fcd but haven't put it in yet. Thanks for the info!

 

[annoyingrob]

my car ran like 9:1 with 14psi.

 

[JCP]

Its really going to depend on the temp... but i got as low as 10.0:1 today. It was 69/sunny today with low humidity.