Safe AFM

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Oct 4, 2013 | 01:52 PM

s2kseven

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Joined: Sep 2010

Posts: 271

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Safe AFM

In stock internal - forced induction - say 12 psi of boost, what is the safe
AFM in WOT of an s2000 engine ?

Oct 4, 2013 | 07:20 PM

indi00

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Joined: Jun 2010

Posts: 388

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You mean air to fuel ratio? AFR?

AFR of 11.5 to 12.2 with optimal timing to minimize detonation.

Oct 13, 2013 | 07:53 AM

jpetch05

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Joined: Feb 2010

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We like 11.5 to 12.2 ? I was always told never leaner then 11.5 but 11.5 was optimal

My tune personally is between 11.5-11.80 in boost

Inputs by anyone else ?

Oct 13, 2013 | 08:12 AM

camuman

Joined: Oct 2002

Posts: 8,044

Likes: 6

From: South Florida

11.3ish here. 11.0-11.5 reading at the downpipe always seems like the general consensus.

Oct 13, 2013 | 09:10 AM

herecomesboost

Joined: Mar 2005

Posts: 4,692

Likes: 6

From: Centreville, Va

I ran 11.3-11.8 on 93; currently running 12.1-12.2 on E85

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