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Hey Guys,

I have recently bought and installed and SAFC NEO and was planning to have a shot at tuning it. I have an Innovate Wideband Oxygen Sensor already installed and will be working with this to get the correct A/F ratios. I have searched the forums but can’t seem to find ideal A/F ratios for a Series 1 RB25DET from an R33.

Other relevant mods are:

FMIC

Pod

Manual Boost Controller set to 10 PSI

Turbo Back 3” Exhaust

Copper Plugs gapped to 0.8mm

I suppose I really just need an idea of desired A/F ratios in differing circumstances such as:

Cruising

Under load

WOT low revs

WOT medium revs

WOT high revs etc.

I did try and search but couldn’t pull up anything – if this has been discussed please link me to the page.

Thanks,

Pete

Hey Guys,

I have recently bought and installed and SAFC NEO and was planning to have a shot at tuning it. I have an Innovate Wideband Oxygen Sensor already installed and will be working with this to get the correct A/F ratios. I have searched the forums but can’t seem to find ideal A/F ratios for a Series 1 RB25DET from an R33.

Other relevant mods are:

FMIC

Pod

Manual Boost Controller set to 10 PSI

Turbo Back 3” Exhaust

Copper Plugs gapped to 0.8mm

I suppose I really just need an idea of desired A/F ratios in differing circumstances such as:

Cruising

Under load

WOT low revs

WOT medium revs

WOT high revs etc.

I did try and search but couldn’t pull up anything – if this has been discussed please link me to the page.

Thanks,

Pete

mate is there any manual how to tune it? i have it as well but have no idea how it works

Thanks Strik3r - are these conservative A/F ratios or are they "right on the edge" so to speak? Should I run it a bit richer to be on the safe side?

Quricha - I have downloaded both manuals from the Apexi Website, and used them to wire the NEO as well as complete the initial settings. I know how to adjust the cells etc., just wan't sure what A/F ratios I should be aiming for...

Thanks for you help so far!

Pete

i'd say they are about what you should be aiming for... Are you sure you dont want to pay a tuner $150 to do it on a dyno ? Then you can observe how they set the AFR's, and tweak the tune on the road.

Thanks for that Strik3r. I'll have a play around with it and if it all goes pear shaped I'll reset it and book it on for a dyno tune. I suppose I am just a diehard DIY'r... :sick:

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