Tgv deletes - Subaru WRX Forum
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#1 Old 10-28-2013, 01:00 PM
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Tgv deletes

Can someone shed some light on this subject to me? I'm doing rails in my car this week and someone mentioned to do the tgv deletes. Anyone w any personal exp w this?


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#2 Old 10-28-2013, 01:17 PM
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Ive always been wondering about this myself as well!!
Looking forward into seeing the way this goes!!

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#3 Old 10-28-2013, 01:53 PM
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Basically you take out the butterflies and rod that go in the TVG housings. This allows air to flow better into the intake runners. They are there for emissions purposes. You would also need to shut off the codes or the car will not run correctly. You can tune for this by richening the start up fuel parameters, but I have found the ECU actually corrects for this by itself.

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#4 Old 10-28-2013, 02:26 PM
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Great info, psinuse.

I intend to delete the TVG when I rebuild my fabulous little EJ205 twin-cam turbo engine.

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#5 Old 10-28-2013, 02:49 PM
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Ok, so the tgv are there for emissions purposes what do they actually do? Do they control/limit the amount of air that enters the manifold?

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#6 Old 10-28-2013, 04:06 PM
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Tgv Deletes

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#7 Old 10-28-2013, 04:36 PM
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Thanks pzr2874!
I probably should have just searched first myself

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#8 Old 10-28-2013, 05:35 PM
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Wow the number of people on that thread that no longer own a Subaru or even post on here anymore...
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#9 Old 10-28-2013, 10:28 PM
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They also help the car start up on a cold day...which with E85 might help out.

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#10 Old 10-29-2013, 08:41 AM
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I do alot of Vermont trips in the winter to snowboard. I'm curious of deleting the tgv is gonna screw me? I wont be on e85 during ling trips like vermont. I won't be e85 too much longer to be honest. I'll prob be on it till the meet then that's it


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#11 Old 10-29-2013, 09:07 AM
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TGV Delete FAQ: TGV Delete FAQ: Read if you are thinking of buying one! - NASIOC

And I'm considering removing just the TGV butterfly plates and leave the rod and actuators in, to avoid any CEL code issues.

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Last edited by LW_Black4; 10-29-2013 at 09:16 AM. Reason: Add TGV delete plan
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#12 Old 10-29-2013, 09:19 AM
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Quote:
Originally Posted by LW_Black4 View Post
TGV Delete FAQ: TGV Delete FAQ: Read if you are thinking of buying one! - NASIOC

And I'm considering removing just the TGV butterfly plates and leave the rod and actuators in, to avoid any CEL code issues.
I know I've heard conflicting reports about it, but I've heard that the error is all that needs to be removed and I've heard that it can cause the car to run lean everywhere and needs to be compensated for. Having never tuned I don't have an experience. I would just ask your tuner what they think just to make sure.
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#13 Old 10-29-2013, 03:02 PM
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Quote:
Originally Posted by LW_Black4 View Post
TGV Delete FAQ: TGV Delete FAQ: Read if you are thinking of buying one! - NASIOC

And I'm considering removing just the TGV butterfly plates and leave the rod and actuators in, to avoid any CEL code issues.
Just remove everything. It's not as hard as it seems and the only real pita is grinding down the divider plate. Tuning as I said a little bit of enrichment, but nothing super crazy really needs done. Unless your running serious boost it's not worth doing unless you already have to take the intake off anyway and even then.
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#14 Old 10-29-2013, 03:18 PM
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Agree with the grumpy ol' cat ^. If your gonna do it, do it all or nothing. Like he said, its really not hard. I did my own. I bought a set ahead of time and deleted them. Then sold my stockers. No downtime that way.

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#15 Old 10-29-2013, 04:51 PM
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What would you be filling in the rod holes with? JB?

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