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Old 06-30-2014, 12:14 AM   #1
Tat2Neil
Scooby Newbie
 
Member#: 360033
Join Date: Jun 2013
Chapter/Region: SWIC
Location: Where the heat is made AZ
Vehicle:
2007 WRX
CGM

Default Will a DBW throttle body bolt to a DBC manifold

I need to get my rebuilt EJ20 out of my bugeye and get it set up in my 07.

I have been researching this swap but wanted to get a little more concrete answers. Obviously the DBC throttle body won't match up to DBW system, and I'd rather upgrade the old parts than swap in my old pedal assembly to keep the DBC (unless people find an advantage staying DBC, but I doubt it)

Can I bolt a 06 (sti) throttle body up to my old manifold? I've looked up the gaskets and although they are different, the bolt pattern looks the same.

Or should I get the whole manifold

Thanks in Advance

-Neil

Update: Got all my questions answered by my tuner (who'd a thunk it) basically need a custom wiring harness that adapts the 2.0 setup to a 2.5 platform, custom map obviously, and a DBW manifold and throttle body.
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Last edited by Tat2Neil; 07-04-2014 at 12:37 PM.
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Old 06-30-2014, 12:22 AM   #2
vicious_fishes
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Member#: 158864
Join Date: Sep 2007
Location: Aussieland
Vehicle:
2003 GD w/EZ30D swap

Default

the bolt patterns are the same, yes.
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Old 07-01-2014, 03:58 PM   #3
naCAnItihS
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Member#: 259481
Join Date: Sep 2010
Chapter/Region: NESIC
Location: South Coast, MA
Vehicle:
2002 WRX STI Wagon
MBP

Default

Quote:
Originally Posted by vicious_fishes View Post
the bolt patterns are the same, yes.
^^ WRONG

No it will not bolt directly on. The DBC TB has the IAC incorporated in it and there is an added cut out on the manifold. Also the DBW bolts are smaller M6? Compared to the DBC which are M8.

You can get an adapter plate that will convert a DBW manifold to use a DBC TB but idk if there is one that does it the other way around.

The different intake manifold and wiring harness would probably be appropriate if you are attempting to put an ej20 into and ej25 platform. But I am not sure on why you would want to do that???
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Old 07-01-2014, 05:58 PM   #4
Tat2Neil
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Join Date: Jun 2013
Chapter/Region: SWIC
Location: Where the heat is made AZ
Vehicle:
2007 WRX
CGM

Default

Quote:
Originally Posted by naCAnItihS View Post
^^ WRONG No it will not bolt directly on. The DBC TB has the IAC incorporated in it and there is an added cut out on the manifold. Also the DBW bolts are smaller M6? Compared to the DBC which are M8. You can get an adapter plate that will convert a DBW manifold to use a DBC TB but idk if there is one that does it the other way around. The different intake manifold and wiring harness would probably be appropriate if you are attempting to put an ej20 into and ej25 platform. But I am not sure on why you would want to do that???
Thanks for info, and yes that's precisely what I'm trying to do. Reason being, I got t-boned in my 03 with only 2500mi on my rebuilt and tuned ej20. I bought a 07 WRX with no motor..the rest should be obvious

and I just got my bugeye back from the ins co so I'm trying to gather the necessary parts to make the swap happen.
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