have a gremlin - Toyota Nation Forum : Toyota Car and Truck Forums

carcatz · 02-18-2005, 07:29 AM

what is the boost guage on a stock mr2 read at full boost.

JekylandHyde · 02-18-2005, 07:56 AM

Not a darn thing. The OEM boost gauge has no value ... that is why there are no numbers on it.

You can pick up a nice VDO gauge for $26 on summitracing.com.

carcatz · 02-18-2005, 12:56 PM

do you recommend a site to show how to install it?

JekylandHyde · 02-18-2005, 01:51 PM

Most boost gauges just have 2 wires (hot and ground for hte light) and one vac line.
All you need to do is run a vac line from the back of the gauge to the engine bay.

On the firewall between the engine and the trunk (on the passenger side) there is a little box that says "diagnostics." Next to that is a black sensor with a vac line under it going from the sensor to the intake manifold.

You can either T-into that vac line OR plug your boost right into that line and leave that sensor with no VAC/boost pressure. All that sensor does is control your OEM boost gauge and fuel cut. If you do this, you will ELIMINATE fuel cut all together. If you T-into the line, you will retain fuel cut.

The boost gauge will not come with vac line . I just get vac line from the local auto parts store. Something like windshield washer line will work, just make sure it is not too flimsy that it wil lsuck shut or get a kink in it.

carcatz · 02-18-2005, 02:04 PM

thanks one more question do you know where the knock sensor is I've checked my repair manual and could not find it?

MR-355-5sfTe · 02-19-2005, 03:23 AM

not sure about the 3sgte, but on mine (5sfe) it's on the intake side of the block.....on the second cylinder I believe.

carcatz · 02-19-2005, 06:47 AM

thanks they don't show it the manuals?

JekylandHyde · 02-19-2005, 09:46 AM

Side of the block at the #3 cylinder.
It's on the side facing the trunk.

TOYRACR · 02-19-2005, 10:01 AM

the Autometer boost gause comes with vacume line its just not long enough and its a pain to deal with since its rolled up in a circle. Remember not to put a kink in the vacume line or the meter will react slower or not at all being that it doesn't have enough vacume. you can allways T off a vacume line to the intake manifold on the driver side or even the Bypass valve. There are many different ways to get a good vacume reading.

Make sure thinks are tight and not loose you don't want a Vacume Leak.

later
-Kenny

www.HuxRacingUSA.com

carcatz · 02-19-2005, 04:16 PM

when i use those nylon lines i sleeve it it fuel line to eliminate the kinks!
thanks