lexus afm

88 supra turbo · 06-02-2009, 09:43 PM

I just purchased a lexus afm Ls 400. Do I need to upgrade my injectors if i am running stock boost 6.8 psi. Some people said if you was not running high boost you dont have to upgrade your injectors. I read also some people said the afm sensor on the lexus Ls 400 would work without swapping you stock one. I also was wondering about the adjustment screw inside the lexus afm. It has the factory screw but I was reading that you need a longer one. Any info. would help.

mirage83 · 06-03-2009, 01:20 PM

Generally speaking when you run that much more air into your engine without upgrading your injectors to deliver more fuel, you run lean. Run the 7M lean and you're going to do real damage to it.

Don't know about a direct swap or the adjustment screw.

ddmcse · 06-10-2009, 04:05 PM

the lexus allows more un-metered air to flow you'll notice the by-pass portion is larger than the stock has . I don't know of any options to purchase an adjustment screw , you'll have to make one

06-02-2009, 09:43 PM	#1
88 supra turbo Stock Join Date: Apr 2009 Location: va Posts: 14	lexus afm I just purchased a lexus afm Ls 400. Do I need to upgrade my injectors if i am running stock boost 6.8 psi. Some people said if you was not running high boost you dont have to upgrade your injectors. I read also some people said the afm sensor on the lexus Ls 400 would work without swapping you stock one. I also was wondering about the adjustment screw inside the lexus afm. It has the factory screw but I was reading that you need a longer one. Any info. would help.

06-10-2009, 04:05 PM	#3
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	the lexus allows more un-metered air to flow you'll notice the by-pass portion is larger than the stock has . I don't know of any options to purchase an adjustment screw , you'll have to make one __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

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06-03-2009, 01:20 PM	#2
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	Generally speaking when you run that much more air into your engine without upgrading your injectors to deliver more fuel, you run lean. Run the 7M lean and you're going to do real damage to it. Don't know about a direct swap or the adjustment screw.