EJ22T swap into Bug - Need wiring & boost controller answers

That spinning thing that makes all of the cool noises. OE and Aftermarket.

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crbastow
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Joined: Wed Jul 17, 2013 11:49 pm

EJ22T swap into Bug - Need wiring & boost controller answers

Post by crbastow »

I have transplanted an EJ22T into my 1973 Super Beetle. I have also transferred the ECU as well of course and now have some questions regarding wiring and boost controller lines. Help would be very appreciated.

Regarding the Clutch and Neutral switches, do I need to ground them in order to make the engine fire? Do these switches only control the starter motor inhibitor?

Regarding the "Read Memory" RED-BLK wire, does it need to be grounded?

Regarding the "Test Mode" Orange wire, does it need to be grounded?

It looks like the fuel pump relay operates by having the ECU switch the negative on the control circuit. I would prefer to have this controlled by key alone, is this fine?


Turbo Plumbing

I am trying to figure out where the hose go to the boost controller and map sensor and such.

The Top line on the boost controller goes to the turbo compressor housing I presume, please confirm or correct.

The bottom side line goes to the wastegate actuator I presume, please confirm or correct.

I do not know where the bottom middle line goes.

I am not using the vapor canister/purge btw.

Thanks to all for their help.
mike-tracy
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Re: EJ22T swap into Bug - Need wiring & boost controller ans

Post by mike-tracy »

Welcome to the site. Here is some info about the turbo plumbing:

http://bbs.legacycentral.org/viewtopic.php?f=1&t=15268
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote: Mon Jan 14, 2002 10:23 am Wait....I'm confused now.
crbastow
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Re: EJ22T swap into Bug - Need wiring & boost controller ans

Post by crbastow »

The hose information is great, thank you. It is a big help to me.
BoostedSubie
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Re: EJ22T swap into Bug - Need wiring & boost controller ans

Post by BoostedSubie »

You can put the Test Mode and Read Memory on separate switches to ground, thats what I did in my Impreza, but don't just ground them or it will always be in Check mode. So if you have a code, you just flip the Read Memory switch and it will flash through your check engine light or an led, however you end up hooking up the cluster.
93 Black Legacy SS
93 Legacy
97 Outback- EJ25D/22e frankenmotor
97 Green Outback
97 Red Legacy GT
98 Silver Legacy GT- Pikes Peak build, built EJ22t/205, GT3076r
99 Black Legacy GT wagon
Legacy777
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Re: EJ22T swap into Bug - Need wiring & boost controller ans

Post by Legacy777 »

crbastow wrote:I have transplanted an EJ22T into my 1973 Super Beetle. I have also transferred the ECU as well of course and now have some questions regarding wiring and boost controller lines. Help would be very appreciated.

Regarding the Clutch and Neutral switches, do I need to ground them in order to make the engine fire? Do these switches only control the starter motor inhibitor?

Regarding the "Read Memory" RED-BLK wire, does it need to be grounded?

Regarding the "Test Mode" Orange wire, does it need to be grounded?

It looks like the fuel pump relay operates by having the ECU switch the negative on the control circuit. I would prefer to have this controlled by key alone, is this fine?

The clutch & neutral switches by themselves don't really keep the engine from starting. The clutch switch is part of the starter interlock circuit to keep the starter from turning over unless the clutch is depressed. Depending on what you did with the wiring, it may not be necessary to hook up the clutch switch.

I've got some more notes/details in my awd & 5spd swap that you may want to look over.
http://www.surrealmirage.com/subaru/swa ... html#start

Can you provide details on what you have done regarding wiring and whether you've wired everything in manual or taken bits and pieces from the legacy harness, etc.

The neutral switch doesn't really do much in a MT equipped car, however without it being hooked up the ECU will throw a check engine light for it. But as mentioned, it won't keep you from starting the car.

As noted, the read & check memory pins/connectors are for diagnostic purposes and should not be hooked up all the time. You can run them through a toggle switch so it makes it easier to put the ECU in diagnostic mode. The other end coming out of the switch should be grounded.

I would recommend against controlling the fuel pump relay via just the key. It is a safety measure to have the ECU control the fuel pump relay. If there is an accident or some other issue and the engine dies, you don't want the fuel pump continuing to pump fuel. When connected to the ECU, once the ECU loses an RPM signal, it shuts off power to the fuel pump. If that's hooked up to the ignition, that won't happen. Like i said, I would recommend keeping the fuel pump relay being controlled via the ECU.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
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