quick question

HpLover101 · 03-10-2006, 02:36 PM

what does the lexus afm do?

supra_91 · 03-10-2006, 02:56 PM

lets more airflow through

suprra_girl · 03-13-2006, 11:54 AM

LOL

well you are to the point aren't you

when you install 550cc injectors you now need to either drop them back using an safc or similar so you don't borewash the engine, run rediculously rich or even stall out from the richness
the engine doesn't know that there are 550cc injectors so it can't control them... so you then need something else that will invisibly input air or control airflow/injector duty somehow
this is where the lexus afm comes in
the lexus when installed allows 25% more air to enter the engine which the ecu doesn't know about either
so the invisible fuel and the invisible air end up matching each other and the air fuel ratio is once again even

550cc injectors = 25% more fuel than stock
lexus afm = 25% more air than stock

if you require any more info i'd be happy to help

rnoswal · 03-13-2006, 02:20 PM

Sounds like magic!!!!!!!

Russ

HpLover101 · 03-13-2006, 08:02 PM

thanx for the info all 1 more thing...........if i was to add an lexus afm do i have to have the 550cc's? or would it hurt the motor if i didnt have them

suprra_girl · 03-13-2006, 09:49 PM

well putting it simply

yes you require the 550cc injectors
remember, with the lexus there is 25% more air getting in that the ecu doesn't know about
therefore the ecu can't correct the fuel for it... so you end up running lean, and the car doesn't really run anyway

03-10-2006, 02:36 PM	#1
HpLover101 Stock Join Date: Jan 2006 Location: Salisbury,Maryland Posts: 18	quick question what does the lexus afm do?

03-10-2006, 02:56 PM	#2
supra_91 Lexus & 550's Join Date: Sep 2005 Location: Illinois Posts: 521	lets more airflow through __________________ 91 N/A automatic supra;K&N FIPK;2.5" custom exhaust;no cat;pacesetter header;eibach springs;tokico "blues";MKIV TT rims

03-13-2006, 11:54 AM	#3
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	LOL well you are to the point aren't you when you install 550cc injectors you now need to either drop them back using an safc or similar so you don't borewash the engine, run rediculously rich or even stall out from the richness the engine doesn't know that there are 550cc injectors so it can't control them... so you then need something else that will invisibly input air or control airflow/injector duty somehow this is where the lexus afm comes in the lexus when installed allows 25% more air to enter the engine which the ecu doesn't know about either so the invisible fuel and the invisible air end up matching each other and the air fuel ratio is once again even 550cc injectors = 25% more fuel than stock lexus afm = 25% more air than stock if you require any more info i'd be happy to help __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

03-13-2006, 09:49 PM	#6
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	well putting it simply yes you require the 550cc injectors remember, with the lexus there is 25% more air getting in that the ecu doesn't know about therefore the ecu can't correct the fuel for it... so you end up running lean, and the car doesn't really run anyway __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

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03-13-2006, 02:20 PM	#4
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	Sounds like magic!!!!!!! Russ

03-13-2006, 08:02 PM	#5
HpLover101 Stock Join Date: Jan 2006 Location: Salisbury,Maryland Posts: 18	thanx for the info all 1 more thing...........if i was to add an lexus afm do i have to have the 550cc's? or would it hurt the motor if i didnt have them