86-89 Mass air flow sensor - Toyota Nation Forum : Toyota Car and Truck Forums

MIGHTY · 01-26-2005, 10:34 PM

I have a pondering Q , does any on know how to byepass the mass air flow, i purchased one from the junk yard and ripped it apart but could not figure out how to byepass it?????

WRS · 01-27-2005, 12:35 AM

3s-fe or 3s-ge? i'm not sure on an FE but on a GE you could switch the ECU and wiring w/5th gen ECU to switch to a MAP sensor. if you want more info you could also check out www.4gcelica.net, its a site completely for 4th gen celicas.

fredk · 01-27-2005, 07:39 PM

you just cant bypass it, why do you want to do this?

MIGHTY · 01-28-2005, 02:26 PM

nice wrs thanks for the intell, i didnt know u could switch with gen 5 ecu!!!

MIGHTY · 01-28-2005, 02:34 PM

cause the mass air flow sensor has asquare that is 2.5 by 3 inches and it is a huge piece of metal that needs to be removed to get more air into the intake, like the new celicas have a sensor that fits on the side of a round tube, mine has 2 doors it has to pass threw and that is restricting my air flow even w/ a super chager. it goes from this"0"to"[]"to"0" and the square part is really narrow compared to the tube>>>>>

Pineapple · 01-28-2005, 02:54 PM

The air flow sensor is the ONLY sensor that tell the ECU how much fuel to use. You want to bypass adding fuel to the engine?

Get a 3S-GTE sensor.

BTW you found SC for 3S-GE, 3S-FE?

fredk · 01-28-2005, 03:18 PM

WRS · 01-30-2005, 01:41 AM

Quote:

Originally Posted by MIGHTY

nice wrs thanks for the intell, i didnt know u could switch with gen 5 ecu!!!

yeah i'd do it, but i got an FE and it requires way more than it does w/a GE. check out that site and send an IM to the owner of the board (Jeremy) for more info. he knows a lot more about the swap than i do. BTW what engine you got?

MIGHTY · 02-01-2005, 12:14 AM

man thank you ive learned more about my ride in one than i have in the 2 years that ive owned it !!!1

WRS · 02-01-2005, 12:22 AM

so if you swapped to 5th gen ecu and wiring and all that. do you think an intake built for the 5s-fe would work in your 4th gen?

MIGHTY · 02-01-2005, 08:12 AM

maybe but does that 5sfe have that big hunk of meta(mass air sensor)at the end of the intake tube?????

Pineapple · 02-01-2005, 09:00 AM

5S-FE is MAP. FE intake manifold won't fit GE head. You'll spend some good time playing with the wiring harness to match all the sensors.
Like I say try a 3S-GTE MAF.