Lexus AFM
- Thread starter RedDogOIF
- Start date
I'm running a Lexus AFM with a bad intake manifold leak. I've seen huge gains in the power with this thing, but so far, I didn't have to do nothing. You will likely get a terrible cold start idle, but me, i'm thinkin its from my intake manifold leak.
Highly recommend 550's, a Walbro, and a vfpr. You can do it on the stock injectors, with incresed fuel pressure, and a wb, to keep a eye on things (a/f's)...but it won't get you that much more power, and it's risky for the motor.
Edit: It will get you alot more power, if you want to run lean, on the edge! Not safe though. W/O the other pieces, you're just playing with fire.
Edit: It will get you alot more power, if you want to run lean, on the edge! Not safe though. W/O the other pieces, you're just playing with fire.
CACressida said:
Lean, lean, lean!!! That's why you are seeing such a power gain. You're not doing your motor any favors! Trust me! At a minimum, you should run a vfpr, and a set of 550 injectors. I know that with a fresh set of flowed and balanced set of 440's, JBL made mid 400's (WHP) with his 60-1 CT, but he had alot of other goodies, and a very good tune.
Be careful, or you will pay for it!
Aeromotive and RC Engineering.
You can run it, but you won't really see any benefit without some other way of mechanically adding some fuel since the ECU will just correct for the AFM by the 02 signal.
You can also tell the ECU it needs less fuel, which is what I do. (This will allow you the benefit of the Lex AFM)
You can run it, but you won't really see any benefit without some other way of mechanically adding some fuel since the ECU will just correct for the AFM by the 02 signal.
You can also tell the ECU it needs less fuel, which is what I do. (This will allow you the benefit of the Lex AFM)
there is nothing wroung with runing the lex afm with 440's
you will need 2 things to go with it thou safc and fule reg
remmber the supra runs 10 a/r stock witch is pretty crappy and fi not runing well ti most likly wores
you will need 2 things to go with it thou safc and fule reg
remmber the supra runs 10 a/r stock witch is pretty crappy and fi not runing well ti most likly wores
RC 550cc or PTE 580cc (IIRC that should be the correct size for PTE's) injectors to be safe. Along with an AFPR and tuning device. Safety first 
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I recently had the opportunity to see the difference in AFR's from just a AFM housing change on the dyno.
From stock to Lexus housing, on an otherwise stock car... the AFR's would not go below 13:1, no matter what the boost level.
From stock to Lexus housing, on an otherwise stock car... the AFR's would not go below 13:1, no matter what the boost level.
Nick has a good point. There are other things you should do first (preferably) before you go with that mod, basic maintenance being the first .
.Oh believe me this car has been maintained ever since I bought it by changing every gasket on it, except rear main seal. Re-doing the crappy wiring jobs and replacing broken bolts. I feel like I rebuilt the car after all the work I put in....the wife's real thrilled about it too hehe. I just feel like the MAF I have is not doing so well, almost like it cuts itself off from getting air.
Your best bet is to free up intake and exhaust restriction first before you start feeding it more air.
read this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
and this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
and when you're done with those, read this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
yes, i meant to post the same link multiple times. you have to UNDERSTAND what you're doing to the car before you do it!
-shaeff
this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
and this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
and when you're done with those, read this: http://rob.carlile.home.mchsi.com/lexus/lexus1.htm
yes, i meant to post the same link multiple times. you have to UNDERSTAND what you're doing to the car before you do it!
-shaeff
man i was thining you were on glue for second use caps much easyer
seeee
GLUE .......FELT MARKER
seeee
GLUE .......FELT MARKER