Id go like 150 ohms on the AMM &........ - Saab Performance Bulletin Board - Saabnet.com
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Id go like 150 ohms on the AMM &........
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Posted by jak [Email] (#195) [Profile/Gallery] (more from jak) on Wed, 22 Oct 2003 15:40:10 Share Post by Email
In Reply to: Amm setting again, but now with new toys., ben, Wed, 22 Oct 2003 10:08:21
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mabey 200 ohms in the orange return from the AMM as well to close down injector pulsewidth to make up for the injectors being too large for the prom map to deal with
I think FMS are rated at 2.7bar so at 2.5bar they may be like 28.5ish which isent too bad
what I would doo is put a DMM on the o2 check for closed loop operation hot idling if the o2 is pinned high .8V or higher (which it will be) turn the screw in the AMM CCW till the o2 starts to swing between .1ish & .9ishV if you turn the screw several turns CCW & dont get closed loop ad resistance in the AMM return start with 100 ohms & mabey go up in 50 ohm incriments (paralell 1/2s resistance & series you add the resisters resistance together)
also on the AMM its been my experience that you can just keep turning & turning the pot & it gets to about 80 ohms & wont go any lower but the screw still turns I did this & dident hurt anything so I wouldent wory about it but in the full CCW position if I remember corectly the car ran kinda crapy it was better to have resisters & keep the AMM above 125 ohms

if you get up to a point where the car is running poorly & the o2 is still high you need to drop your FP to get it into controll range
feel free to email me if you have any further questions
take care
JAK

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