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brad Im running ....
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Posted by jak [Email] (#195) [Profile/Gallery] (more from jak) on Wed, 25 Dec 2002 19:38:04 Share Post by Email
In Reply to: Re: F Injector controll question brad? kevin?, Brad, Wed, 25 Dec 2002 13:30:35
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a volvo 2.2 lh ecu# 280 000 541 & amm# 280 212 007 with #30 accell high impedance injectors no resister
what I found with the volvo ecu & amm I will post a link to
http://saabpics.nailed.org/gallery/jak/ecu_amm
http://saabpics.nailed.org/gallery/jak/both_LH_data
the reason for this is that dutycycle at the inj driver is almoast 20% less at 3500 rpm which I make up for with FP but leavs more room for increase in on time above that rpm which helps high rpm lean out allot
my question is that the volvo system uses low impedance injectors with a resister which open slower and I have found out & the driver controll in the prom is designed to work with this setup my car runs great better than ever great fuel milage when driving moderatly & uses allot of fuel when boosting high but Id like the closed loop operation to work as it would stock which may be asking too much it maintains almost stoich in moderate driving I just dont get the closed loop swing Im used to seeing which I believe to be the mismatch of the ecu & injectors
Ill dyno the car soon & find out what my AF ratio actually is at wot I get above .8V all the way to the rev limiter so I know Im rich but not sure of the ratio
o2 sensors taper to a slightly leaner reading as temp increases mabey as much as .15V depending on heat
any more advise would be helpful
thanks
JAK


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