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Stock Evo AFR

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Old Mar 25, 2007 | 04:03 AM
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4wheel_motion's Avatar
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Stock Evo AFR

2005 Evo
3" TBE
K&N drop in filter
Greddy Profec-B
19-20psi (@ redline)
ZT2 wideband

Do these AFRs look right for an untuned 05 evo? I was under the impression Evo's ran much richer than this stock? I mean, considering most of you guys tune for the 11-11.5 range, my cars a bit on the lean side . . . stock. At idle the WB reads 14.7-14.8 for calibrations sake, and its located right under the firewall.

I'll post up the evoscan data soon.

In the 5000 to 7500RPM range AFRs where solid 11.8-11.9, and EGT held 1040-1050 degrees F

knock was in the 0-1 range except at 6800Rpm where it got a random 10count and held 9-8count to redline.

Am I running too much boost on the stock tune or what? I'll post up the evoscan data soon.
Attached Thumbnails Stock Evo AFR-evo-3rd-gear.jpg  

Last edited by 4wheel_motion; Mar 25, 2007 at 04:40 AM.
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