VSV How ImPortant are they?

FlikRacing

Banned
Apr 2, 2008
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I was wondering about the vaccum line tree under the intake manifold on the 7m-gte. It has to VSV's ir a FPU or w/e Is there anyway to remove those without compilations, and is there a diagram my book does go down that far..

Sorry If I am asking stupid questions, I am just making sure of things and that diagram of the sensors really helped me.
 

87mgte

87 Turbo Targa
Sep 9, 2007
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Sequim
FlikRacing;1000056 said:
I was wondering about the vaccum line tree under the intake manifold on the 7m-gte. It has to VSV's ir a FPU or w/e Is there anyway to remove those without compilations, and is there a diagram my book does go down that far..

Sorry If I am asking stupid questions, I am just making sure of things and that diagram of the sensors really helped me.

They go to your charcoal canister... I don't see what the point of removing em would be.
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
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Feb 10, 2006
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^^^ That's the BVSV ;)

The forward VSV controls the hot fuel pressure up function...the aft controls the EGR. You need both. Please don't go off on a "clean up the engine bay" crusade...guys start yanking stuff off they don't understand and the next thing you know us "old heads" have to endure the multiple, self induced problem threads. It really gets old.
 

jdub

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mk3 for life!;1000099 said:
if you eliminate the egr should you still plug the vsv in to complete the circuit? seems like you wouldnt need it since there wouldnt be any vacuum going to it. . .

<Sigh> :3d_frown:

Removing the EGR and running a stock ECU is not a good idea...been beat to death. Please don't ask why (really tired of this one), search EGR* for my or JetJock's posts.

If you do remove it (and are willing to accept the consequences), the VSV is no longer needed. You do need to plug the vac line though.


7Mboost;1000111 said:
If you don't like the VSV's looks you have the option of switching to a shiny catch can.

Lost me on this one...what does either VSV have to do with the PCV system?
 

7Mboost

7M Powered
Aug 15, 2006
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jdub;1000112 said:
<Sigh> :3d_frown:

Removing the EGR and running a stock ECU is not a good idea...been beat to death. Please don't ask why (really tired of this one), search EGR* for my or JetJock's posts.

If you do remove it (and are willing to accept the consequences), the VSV is no longer needed. You do need to plug the vac line though.




Lost me on this one...what does either VSV have to do with the PCV system?



Doh! Sorry I meant PCV, yeah a catch can won't work for your VSV's lol.
 

jdub

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7Mboost;1000151 said:
Doh! Sorry I meant PCV, yeah a catch can won't work for your VSV's lol.


LOL...not to worry...I get the same sort of brain farts ;)

Now that you mention it though, the PCV to a catch can is another one that is consistently routed in Cletus manner...almost as if they're trying to blow their seals. Never understood it...it's not exactly a rocket science system.
 

alloyguitar

it's legal, i swear...
Mar 30, 2005
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Well, in my opinion it really comes down to one decision: to daily drive, or not to daily drive?

For example, my car is NOT a daily driver, and does NOT see rain, or adverse weather of any kind. Furthermore, all the research that I had done prior to the the removal of my vsv's indicated that it was not necessary to the vehicle functioning as it should. If I have overlooked some sort of serious problem, please enlighten me, as the issue has yet to present itself in the 6+ years that they, along with the egr, have been relocated to the trash.

Bottom line is that, again in my opinion, if it's a daily driver, it should remain stock, and have every single thing that toyota intended to be on there present and functioning accordingly. Otherwise, it is a non-issue. Take duane, for example. Every photograph of his engine bay I have seen doesn't seem to have an egr present, and given the numbers that his car puts down, I would be under the impression that his motor would be held to a MUCH tighter tolerance than my own. Continuing in this thought process, any problem, however minute to me, would be much more severe to him.

So how MUCH of a problem does the absence of these components really pose, because if it's a big one, I'm probably up shit creek by now...

-Devon Goodspeed
 

IJ.

Grumpy Old Man
Mar 30, 2005
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Of course it can be made to run without but it's more a case of people deleting parts with NFI what they do and what effects if any removing them will have for no better reason than "I don't like how it looks"