Desperately Seeking help with Lexus AFM and Injectors!!!

cre · 07-09-2007, 11:22 PM

Which KV sensor is in the Lex AFM? You need to swap in the one from your stock AFM.

Also, what brand of injectors are you running?

abhattan · 07-09-2007, 11:54 PM

I don't know, but I tried it with the stock one on and the lexus unit. Still ran the same way. How can I tell what's what? I heard something about a screw, what is that? As far as the injectors go, I have no idea, but they came off of his car and were fine on his car. He had them cleaned and tested then i got them. All I know, is that I didn't have to use seperate clips.

cre · 07-10-2007, 12:13 AM

It sounds like you're running very rich. Do you have a wideband? If so, what are your AFRs looking like?

EDIT: Oh, the screw is used to reduce or increase the amount of unmetered air that's let through the AFM. It's in the side and I think there's normally a cover over it. If you don't have a wideband I wouldn't recommend adjusting it.

abhattan · 07-10-2007, 12:31 AM

I see the screw and didn't touch it. I checked to see if all of the injectors are firing, and they are, also, no codes. Should I have to readjust my timing for this mod or anything I should be doing otherwise? I don't have a wideband by the way.

cre · 07-10-2007, 06:33 AM

Well, with no tuning your idle and low power band are going to be pretty rich. Idle will probably be real bad since I don't think the ECU monitors A/F at idle... sorry, it's late and I can't picture the entire scenario or remember all the specifics at the moment. I'll post back if I think of anything else.

ddmcse · 07-10-2007, 11:26 AM

there is no screw really you just see the screw head
thats part of your problem . you are most likely lean and getting too much air

this site used to have pictures
http://www.supras.co.uk/resources/Mk...e.htm#Chapter3
the lexuz afm has a large bypass section allowing unmetered air you need to adjust that amount of unmetered air
it would have been good to install an air/fuel meter before so you'd have an idea where your mixture was at before

search google for "reg reimer afm screw "

abhattan · 07-10-2007, 09:20 PM

Thanks alot for all of your help.

07-09-2007, 11:54 PM	#2
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	I don't know, but I tried it with the stock one on and the lexus unit. Still ran the same way. How can I tell what's what? I heard something about a screw, what is that? As far as the injectors go, I have no idea, but they came off of his car and were fine on his car. He had them cleaned and tested then i got them. All I know, is that I didn't have to use seperate clips. __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

07-10-2007, 12:31 AM	#4
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	I see the screw and didn't touch it. I checked to see if all of the injectors are firing, and they are, also, no codes. Should I have to readjust my timing for this mod or anything I should be doing otherwise? I don't have a wideband by the way. __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

07-10-2007, 11:26 AM	#6
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	there is no screw really you just see the screw head thats part of your problem . you are most likely lean and getting too much air this site used to have pictures http://www.supras.co.uk/resources/Mk...e.htm#Chapter3 the lexuz afm has a large bypass section allowing unmetered air you need to adjust that amount of unmetered air it would have been good to install an air/fuel meter before so you'd have an idea where your mixture was at before search google for "reg reimer afm screw " __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

07-10-2007, 09:20 PM	#7
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	Thanks alot for all of your help. __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

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07-09-2007, 11:22 PM	#1
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Which KV sensor is in the Lex AFM? You need to swap in the one from your stock AFM. Also, what brand of injectors are you running?

07-10-2007, 12:13 AM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	It sounds like you're running very rich. Do you have a wideband? If so, what are your AFRs looking like? EDIT: Oh, the screw is used to reduce or increase the amount of unmetered air that's let through the AFM. It's in the side and I think there's normally a cover over it. If you don't have a wideband I wouldn't recommend adjusting it.

07-10-2007, 06:33 AM	#5
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Well, with no tuning your idle and low power band are going to be pretty rich. Idle will probably be real bad since I don't think the ECU monitors A/F at idle... sorry, it's late and I can't picture the entire scenario or remember all the specifics at the moment. I'll post back if I think of anything else.