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Old 10-02-2012, 04:35 PM   #1
Mango
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Vacuum canister delete (for exhaust flap)

Has anyone ever deleted their vacuum canister? Since most do the golf-tee mod, it seems stupid to just have it sitting there. It's apparently held on by one bolt and it seems the vacuum line either goes to the intake manifold or some other vacuum check valve. If so, I'd think you can just yank it out and put a cap on whereever the vacuum line connects. This would just eliminate another area which could be potential for a vacuum leak. I mean what about the rubber line that runs from this canister to the exhaust?

Thoughts? Anyone tried this?

Part #18101740207 for anyone curious what I am talking about.

Part #9... bolts to driver's side of the engine block right by starter

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Old 10-02-2012, 10:11 PM   #2
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If the vacuum line goes directly to the manifold, might as well check if the 325s and ZHPs have any ports blocked off from the factory (since they don't have the exhaust flapper)
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Old 10-02-2012, 11:35 PM   #3
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My car has the same system; part #1 is an electronically controlled actuator. I wonder if you'd end up throwing some weird code by tearing it out.
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Old 10-02-2012, 11:37 PM   #4
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Get part #11611727176 (hint: E39) to plug up the port on the intake manifold, previously occupied by the hose going to the vacuum reservoir. For the vacuum line running through the firewall into engine bay, use a golf tee to plug it up. Get part #51712258519 to plug up the hole where the vacuum line runs from the exhaust flap through the trunk body inside to the electronic valve. Unplug the electrical connector to the electronic valve. Wrap the connector with cloth tape to prevent the plug from causing a racket. No codes are thrown as a result of the delete. You now have enough information to go and delete this retarded exhaust flap.
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Old 10-02-2012, 11:40 PM   #5
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Great posts. Definitely on my to-do list. I'm assuming I should just follow the line from the canister to the manifold and I'll find the port there to plug. Couldnt I just physically pull the line out that runs underneath the car? Not sure why I'd want to plug a hose that's just dead weight. again, good info. THANKS!
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Old 10-02-2012, 11:42 PM   #6
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Wait or did you mean to plug the body of the car?
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Old 10-03-2012, 01:50 AM   #7
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Wait or did you mean to plug the body of the car?
Seems like he meant plug the body of the car with the 40mm plug (51712258519), trash the vacuum reservoir and plug the vacuum line that is going from the reservoir through the firewall since it may be tough to fully remove it.
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Old 10-23-2012, 11:46 PM   #8
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Originally Posted by E46Mango View Post
Has anyone ever deleted their vacuum canister? Since most do the golf-tee mod, it seems stupid to just have it sitting there. It's apparently held on by one bolt and it seems the vacuum line either goes to the intake manifold or some other vacuum check valve. If so, I'd think you can just yank it out and put a cap on whereever the vacuum line connects. This would just eliminate another area which could be potential for a vacuum leak. I mean what about the rubber line that runs from this canister to the exhaust?

Thoughts? Anyone tried this?

Part #18101740207 for anyone curious what I am talking about.

Part #9... bolts to driver's side of the engine block right by starter


Mango do you know where line #8 goes into the intake manifold. I've been having lean codes due to vaccum leaks and I'm thinking this might be the cause. I checked the vale with the car on but it appears to not work, as it let's air pass at idle. I've unppluged the valve and capped the vaccum line in the trunk were it goes into the front of the car.

This vale hasn't worked in a while now, so I want to make sure I don't have a possible vaccum leak.

Edit:
I unplugged it today, so tomorrow I will post if it threw a code, I've been reading you want to know. Checked after I unplugged it with INPA and DIS and no codes, at least not at idle.

Also, my flap is always open, not stuck as I can move it with my finger and with no golf tee mod, hence why I think the vale has been dead for a while. There's vaccum on the line that comes from the front of the car

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Old 10-24-2012, 07:44 AM   #9
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I deleted mine 2 years ago. Plug the vac line at the back side of the manifold. Simple job with no codes. The flap is always open on my car.

Last edited by kwikt; 10-24-2012 at 07:46 AM.
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Old 06-20-2013, 05:53 AM   #10
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Vacuum canister delete (for exhaust flap)

Are the vac lines on the manifold difficult to get to?


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Old 06-20-2013, 10:10 AM   #11
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Are the vac lines on the manifold difficult to get to?


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Yes, it's tight back there. I did my vacuum lines from the SAP to the manifold the other day and stuggled more than expected. It was a pain scraping all the old rotten hoses off the fittings on the back of the manifold.

As far as vacuum line number 8, it goes to the back of the manifold, right next to the rubber cap that's on there. It's just above where the line comes into the manifold from the check valve. I've attached a pic graciously provided to me by drew@swiftmotorwerks. I broke this hose on accident the other day when replacing the SAP lines. Personally I want to replace it because I don't like the sound of my car with the butterfly valve open all the time. Sounds like a hunk o junk to me. lol.
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Old 06-20-2013, 11:25 AM   #12
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Yes, it's tight back there. I did my vacuum lines from the SAP to the manifold the other day and stuggled more than expected. It was a pain scraping all the old rotten hoses off the fittings on the back of the manifold.

As far as vacuum line number 8, it goes to the back of the manifold, right next to the rubber cap that's on there. It's just above where the line comes into the manifold from the check valve. I've attached a pic graciously provided to me by drew@swiftmotorwerks. I broke this hose on accident the other day when replacing the SAP lines. Personally I want to replace it because I don't like the sound of my car with the butterfly valve open all the time. Sounds like a hunk o junk to me. lol.
Then I guess E36 M3 or ZHPs sound like hunks of junks cause they sound the same, if not similar with this mod. Those cars don't have such restrictions at low RPMs.

Personally I wouldn't have it any other way. Sounds great
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Old 06-20-2013, 11:39 AM   #13
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Great posts. Definitely on my to-do list. I'm assuming I should just follow the line from the canister to the manifold and I'll find the port there to plug. Couldnt I just physically pull the line out that runs underneath the car? Not sure why I'd want to plug a hose that's just dead weight. again, good info. THANKS!
Mine was just hanging, no codes or anything. When I finally found out about the mode i discovered the valve was actually stuck closed and the exhaust pipe was almost half clogged with carbon deposits.
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Old 06-20-2013, 12:37 PM   #14
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Then I guess E36 M3 or ZHPs sound like hunks of junks cause they sound the same, if not similar with this mod. Those cars don't have such restrictions at low RPMs.

Personally I wouldn't have it any other way. Sounds great
Well, mine's an automatic, so I think that's part of it. It seems to accentuate every sound of the tranny shifting. On a manual it probably would sound better. Hell I dunno.
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Old 06-20-2013, 12:45 PM   #15
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Well, mine's an automatic, so I think that's part of it. It seems to accentuate every sound of the tranny shifting. On a manual it probably would sound better. Hell I dunno.
you're probably right. i can hear the auto tranny shifting being exaggerated with this. sounds like crap probably
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Old 06-20-2013, 12:48 PM   #16
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I ran the golf tee mod for a few months a couple of years ago. I don't recall the automatic transmission being more audible, but my flap started to rattle around because I simply pinched the vacuum line instead of removing it (too dry and rotted to mess with). I may have to experiment with it again and potentially give this a shot.
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Old 06-20-2013, 12:53 PM   #17
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I ran the golf tee mod for a few months a couple of years ago. I don't recall the automatic transmission being more audible, but my flap started to rattle around because I simply pinched the vacuum line instead of removing it (too dry and rotted to mess with). I may have to experiment with it again and potentially give this a shot.
The transmission isn't really more audible itself, I just seem to hear it shifting more now that the exhaust is louder. Who knows, maybe i'm just OCD...
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Old 06-20-2013, 01:11 PM   #18
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So question, if I decided that redoing that hose from the manifold (I have nothing on the manifold right now, so i'm getting ses light) to the vacuum canister was just too much of a pain in the arse, and decided to keep my unintended golf tee mod, where would you find a cap for the back of the manifold? I see the 7 mm one on ECS Tuning, but this one would be more like the size of the vaccuum lines (3mm???) Haven't been able to locate a cap that small.
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Old 06-20-2013, 01:14 PM   #19
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So question, if I decided that redoing that hose from the manifold (I have nothing on the manifold right now, so i'm getting ses light) to the vacuum canister was just too much of a pain in the arse, and decided to keep my unintended golf tee mod, where would you find a cap for the back of the manifold? I see the 7 mm one on ECS Tuning, but this one would be more like the size of the vaccuum lines (3mm???) Haven't been able to locate a cap that small.
buy an assortment pack from auto parts store. one of them will fit
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Old 06-20-2013, 01:18 PM   #20
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buy an assortment pack from auto parts store. one of them will fit
Cool, thanks. Didn't know those existed...
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