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Newbie Forum: Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum. Probationary Members must limit their tech posts to this forum and sub-forums.

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Old 12-16-2009, 01:50 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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vacuum delete


so, this is my first time trying a vacuum delete, and its for my 90 tsi talon that is sort of torn apart right meow(getting new top end), and i was bored so i decideds to do the vacuum line delete everyone else does. well, everytime diagram i find on it, shows the throttle body having four ports on the top of it. but MINE only has 2. so do i just cap them both off? or do i use one for something? i will show you guys the diagram i used, and my throttle body
Taboo speed shop vacuum diagram and removal for 1g and 2g - Mitsu-Media thats a link to the diagrams i used.

and heres my throttle body

also, how do i "delete" the charcoal canister system? just rip the whole piece of shit out, and call it good? or is there certain things i need to do? i know it sounds kinda silly, but theres no emissions where i live except for the one about catalytic converters lol. go figure. thanks guys.

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Old 12-16-2009, 01:58 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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Just use vacuum caps for all the ports on the TB. There is one labeled "P" i believe that you can run a boost gauge vac line from to not have to tee into the FPR line. Other than that rip em all out. Leave one from mani to FPR, and mani to BOV.

Charcoal canister shot put into the trash. There is one hard line that runs up to it with a rubber line to the canister, this is the gas tank vent. Just get a piece of vac line about a foot long and route it behind the crossmember just so you dont get the occasional whiff of gas from the vent line.
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Old 12-16-2009, 02:00 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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Yep, just cap those off at the top, also are you doing FIAV delete?
The canister just yank out and route the hose from the gas tank under the car or pointed down, you might smell some gas out of it.

^ yeah what he said
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Old 12-16-2009, 02:02 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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Originally Posted by Rob10_99 View Post
Yep, just cap those off at the top, also are you doing FIAV delete?
Im not sure if he can on the 90 TB...that was one gripe i always had with my 90 cars lol
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Old 12-16-2009, 02:13 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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I believe you can, but you have to grind/cut off the bottom portion. This is why most people swap to a '91-'94 throttle body.

I know Jim (Auto RS T) did this with his '91-'94 and I thought he had a picture floating around somewhere. I'll see if I can track it down or have him post it.


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Last edited by snowborder714; 12-16-2009 at 02:54 PM. Reason: Wrong person, wrong tb
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Old 12-16-2009, 02:16 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Originally Posted by snowborder714 View Post
I believe you can, but you have to grind/cut off the bottom portion. This is why most people swap to a '91-'94 throttle body.

I know Craig (calan) did this with his '90 and I thought he had a picture floating around somewhere. I'll see if I can track it down or have him post it.
Yeah i know you have to "rig" things, for lack of better terms.

I always just wired in the plug for a 91-94 TPS and ran one of them minus the FIAV/IAC parts.
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Old 12-16-2009, 02:39 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Here's what Jim did to one of his throttle bodies.

Name:  DSCN4027.JPG
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Old 12-16-2009, 02:44 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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sweet i really appreciate the replies guys. a lot more help then the d-bags on talk gave me. but, i gotta keep the two ports on the side of the tb correct? ### theyre for coolant lines or some shit?
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Old 12-16-2009, 02:46 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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The two skinny ports off the side of the throttle plate are for vacuum. The two larger ports off the bottom section of the throttle body are for coolant.


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Old 12-16-2009, 02:49 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Quote:
Originally Posted by snowborder714 View Post
Here's what Jim did to one of his throttle bodies.
Yeah thats a 91-94 TB, he just retained his IAC. Pretty slick.
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Old 12-16-2009, 02:53 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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Ya, I thought he had a '90 - my bad.


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Old 12-16-2009, 02:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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Ya, I thought he had a '90 - my bad.
No biggie. Shows the true heart of a DSMer because he could have just bought this and made his life alot easier! haha DSM FIAV Bypass Plate
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Old 12-16-2009, 03:20 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #13 (permalink)
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Originally Posted by 90rslaser View Post
sweet i really appreciate the replies guys. a lot more help then the d-bags on talk gave me. but, i gotta keep the two ports on the side of the tb correct? ### theyre for coolant lines or some shit?
The 2 large ones on the bottom are the coolant lines and they run into the FIAV that everyone is talking about.

About the FIAV, mine is bypassed and I just have the coolant lines looped in together. With the blockoff plate can I completely remove the FIAV and ISC or will they still be there just blocked off? In other words does the plate go in between the TB and the FIAV or replace the FIAV.
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Old 12-16-2009, 03:31 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #14 (permalink)
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An FIAV bypass plate goes inbetween the FIAV portion and the throttle body portion. You can leave the coolant nipples on the FIAV open with this, as nothing will come out. This will allow you to retain the ISC.

An FIAV blockoff plate goes on the bottom of the throttle body portion. You can bolt up the FIAV portion, but it's not needed as the blockoff plate is solid and, well, blocks everything off.


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Old 12-16-2009, 03:48 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #15 (permalink)
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An FIAV bypass plate goes inbetween the FIAV portion and the throttle body portion. You can leave the coolant nipples on the FIAV open with this, as nothing will come out. This will allow you to retain the ISC.

An FIAV blockoff plate goes on the bottom of the throttle body portion. You can bolt up the FIAV portion, but it's not needed as the blockoff plate is solid and, well, blocks everything off.
Yeah i get how it works. I have a FIAV bypass plate installed already. I would like to get rid of the whole assembly though to clean up the engine bay some more. I just didn't know if the blockoff plate installs the same way, between the FIAV or in place of. I think there would be an issue with the length of the bolts. Just wondering how other have done it.

Also what size caps do you get to block off the little vacuum lines on the top of the TB.
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Old 12-16-2009, 03:49 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #16 (permalink)
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Thats a interesting tb, kinda neat.


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Old 12-16-2009, 03:51 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #17 (permalink)
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Originally Posted by 9!'clipseDOHC View Post
Yeah i get how it works. I have a FIAV bypass plate installed already. I would like to get rid of the whole assembly though to clean up the engine bay some more. I just didn't know if the blockoff plate installs the same way, between the FIAV or in place of. I think there would be an issue with the length of the bolts. Just wondering how other have done it.

Also what size caps do you get to block off the little vacuum lines on the top of the TB.
The blockoff plate can be installed in place of it. The JMF kits come with the shorter bolts you need.

And the caps are the smallest ones you can get off the shelf at the parts store. You could back woods it and just loop a vac line between them, but caps look cleaner
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Old 12-16-2009, 03:55 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #18 (permalink)
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Or you can remove the nipples and install set screws. Or have the holes welded shut


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Old 12-16-2009, 04:08 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #19 (permalink)
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The blockoff plate can be installed in place of it. The JMF kits come with the shorter bolts you need.
Ok cool, thats what I wanted to know.

Quote:
Originally Posted by SBR Joe View Post
You could back woods it and just loop a vac line between them
That is how mine are now but i am planning on capping them off for that cleaner look.
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Old 12-16-2009, 04:44 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #20 (permalink)
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wow this thread is great, I also have a question about this topic. i have a fiav bypass plate with the isc hole i just installed, and i need to know the coolant lines that run to the t/b i can just delete those now?
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