Lean rear cylinders with boost?
Staging Lane
Joined: Jan 2005
Posts: 59
Likes: 0
I would definitely run 11-11.5 a/fs. 12.5 puts you right at the edge and the power difference is not worth it.
What kind of ECU are you running? We have individual cylinder fuel control on the cars we tune with AEM so by monitoring EGTs we can adjust accordingly.
How are you monitoring knock noise? Timing, heat range of the spark plug and octane??
What kind of ECU are you running? We have individual cylinder fuel control on the cars we tune with AEM so by monitoring EGTs we can adjust accordingly.
How are you monitoring knock noise? Timing, heat range of the spark plug and octane??
Originally Posted by trtturbo
Back to the top for you Brandon. I would be interested in others opinions too.
Cylinder pressure breaks them. Whats your rings gapped at and what style rings are they?
It is your afr plain and simple. Even a short spike to 12.5:1 can break something at 12 psi. You have to tune yourself, you cannot do a mail order tune and have it correct with a turbo car.
Originally Posted by stssilverado
who is Jose?
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Originally Posted by stssilverado
is jose a screen name? or am i supposed to know him already?
His username is JZ 97 SS 1500
and I'm also curious to know what kind of WOT timing there was in this tune?
I think my car runs 17deg@9psi
I am at 18 degrees timing with 11.3:1 AFR @ 16 psi. I keep the 18 through the entire boost range although I could raise it at lower points for more power. 11.3:1 AFR is very solid on a pumpgas tune.
Good luck!
Good luck!