1G JDM TB on 2G

[kyanox]

So either I'm search impaired (possible) or it hasn't been asked yet.

If so can someone point me to the right thread, i been searching all night and just havn't found what I'm looking for.

Can you use the JDM 1g throttle body on a 2g. By JDM i mean the one of the GVR-4, with 1 vac line, line P.

The reason I ask is, it looks as though the JDM version eliminates the emissions canister and egr feeds, and well I have one just sitting on my table ready to use.

If so, how does one fool the CEL so it doesn't trigger.

BTW i have a complete 1g TSI I can rob parts off of if needed, it's a parts car donated for the build up of the 2g i just got. I'd like to use the cyclone intake or the evo 3 intake I have. I know the evo will bolt up but i'm not sure about clearance issues.

 

[cjridert1]

I would think it would be no problem - the TB elbows are interchangable, so the bolt pattern is the same. They both have ISC and TPS, so you could swap these around (just in case they are different) and you'll be good (I would think).

 

[dsm-onster]

You will have a terrible step down from the TB tot he 2g intake manifold. This will kill flow. But yea. It will bolt on.

 

[kyanox]

Well I'm sure it will bolt on. But i been reading up on the vac diagrams. I am pretty sure this will eliminate the EGR vac feed as well as port A vac feed to the EVAP canister. It does keep port P however.

Is there away to either, tap somewhere else for A, or perhaps eliminate it. I do have all the 1g evap equipment I can use.

And is there a real fuel economy need for the EVAP? I live in a state with no emissions testing. I very much like this throttlebody and also my 2g throttlebody is throwing code p0505. Funny i've never had a ISC go out before.

And I actually have all the tools needed to port the manifold opening to the throttlebody opening. I built my 1g and did all my own work, even built a flow tester to match the ports on the head last year.

 

[kyanox]

Ah so nobody is sure if we can use the 1 nipple 1g throttlebody on the 2g?

Basically i'm probably going to try it on Sunday as I have the day off. I'm not sure how i'll fool the ecu yet.

Does anyone know when or if the stock 2g lines off the throttlebody see vac/boost at all, and if so which ones see it when?

 

[kyanox]

In case anyone is wondering i did some more searching.

Ports A and A1 are boost sources, E is a tiny hole before the butterfly and P one after.

In that case it shouldn't be that hard to tap into pre or post butterfly sources on this throttle body.

My reason for using it is like the many other reasons, I have all these parts left over from my 1g build.