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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cannot find the Golf Tee Mod for 335i



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      08-04-2007, 05:32 PM   #221
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is it even worth doing on the e90?
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      08-04-2007, 05:35 PM   #222
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btw -- for those who don't know, it may be a good idea to cap the nipple (where you take off the hose) with a vacuum cap; not sure if it's absolutely necessary, but it certainly couldn't hurt. I bought a bag of rubber vacuum caps at an auto store for ~ $2.
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      08-10-2007, 08:19 PM   #223
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Quote:
Originally Posted by Brisk View Post
i just folded my hose and wire tied it... worked like a charm took exactly 20 seconds.

i dunno but on my coupe, didnt really sound louder except for the lower rpm, from idle to about 2500 sounded a bit louder


-lumi
That's it; nobody has claimed that this easy, free mod makes it like you added a cat-back exhaust or anything, but there's definitely a real difference (about 10% louder) from idle - ~ 2,500rpm.

btw -- from what others have said in this and other threads, this mod is more noticeable on the E92 Coupes as opposed to the E90 Sedans; apparently, the exhausts are slightly different (the Coupe doesn't have some extra resonator that the Sedans have or something like that).
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      08-10-2007, 08:42 PM   #224
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I done it on my E90 and my friends E90 too and it louder and deeper about 20%.
As I have four people hearing it ....all of us like the mod sound better.

It only cost 3 dollars for a pack of vacuum plugs and 30 sec. We can all hear the different when we are in the car....( E90 sedans)

No harm trying .....

for those that can hear it is, good ( I and my friends are happy ) it almost a free mod so no big deal.
for those that can't hear it move on or get a cat back ....
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      08-10-2007, 08:43 PM   #225
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Quote:
Originally Posted by sflgator View Post
That's it; nobody has claimed that this easy, free mod makes it like you added a cat-back exhaust or anything, but there's definitely a real difference (about 10% louder) from idle - ~ 2,500rpm.
I would concur with that and add it was about 20% more on an imediate cold start for a moment. On uphill low load situations it would have a slight drone which would exceed the 10% greater sound level.

Which is why I reverted back. Boy am I getting old...
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      08-10-2007, 09:14 PM   #226
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Quote:
Originally Posted by scalbert View Post
I would concur with that and add it was about 20% more on an imediate cold start for a moment. On uphill low load situations it would have a slight drone which would exceed the 10% greater sound level.

Which is why I reverted back. Boy am I getting old...
Yes, it's much more noticeable upon a cold start (maybe ~ 20% louder as you said), and then it quites down a bit as the engine warms up and while cruising; it's louder though and I really think it enhances the exhaust note.
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      08-10-2007, 09:38 PM   #227
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Quote:
Originally Posted by Brisk View Post
there no 20% increase.. at least not on a coupe... in reality on a coupe there a 10% from idle to 2.5-3k..
On no load I would agree. But on an uphill pull at low revs and little throttle, a drone will occur with the E92. That was the only negative I found and was enough to revert back.
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      08-10-2007, 10:25 PM   #228
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Quote:
Originally Posted by Brisk View Post
i reverted aswell.
Not me...I think it sounds great; I don't get any droning, but then again, I typically have my Sirius sat radio blaring!
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      08-11-2007, 01:39 AM   #229
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Quote:
Originally Posted by Brisk View Post
there no 20% increase.. at least not on a coupe... in reality on a coupe there a 10% from idle to 2.5-3k.. than its pretty much like if it was untouched i guess because the valve opens after agressive throttle and above 3k rpm guessing...
-lumi

I think if u like the mod and can hear it, is about 20%.
If u dislike it and can't hear it.... it goes from 10 to 0%.

Is really up to individual not everyone have the same hearing and depend on the road conditions... I drive local, a lot of lights and most is low RPM ...stop and go ... LA traffic.

It so easy to put it back if u don't like it ... I think people should try to see for themselves. It not the best sound but not that bad if u want a little more for $3 or free.

My friend even tell me mine sounded louder then his ( same E90 ) it all in our head.
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      08-11-2007, 07:52 AM   #230
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Quote:
Originally Posted by sflgator View Post
I don't get any droning,
Nor do you have any hills in your area.
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      08-11-2007, 07:44 PM   #231
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Quote:
Originally Posted by scalbert View Post
Nor do you have any hills in your area.
True statement.
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      08-13-2007, 12:22 AM   #232
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ahhh so i took delivery of my 335i coupe just the other day and of course started pullin stuff apart... i must say the 'golf tee mod' which might as well just be changed to the 'clog up that little black hose with anything u can find' mod...was hands down one of the best things ive done to a car in history. it cost all of 8 cents and made a world of difference in sound. and it took me like...20 seconds... beautiful.
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      09-09-2007, 01:58 AM   #233
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so where excatly can i buy the 7/32' bearing ball? what kinda stores sell them?
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      09-09-2007, 09:02 AM   #234
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Quote:
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so where excatly can i buy the 7/32' bearing ball? what kinda stores sell them?
Any bicycle shop will have them.

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      09-09-2007, 12:52 PM   #235
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Quote:
Originally Posted by Orb View Post
Any bicycle shop will have them.

Orb
Did the electrical solenoid disconnection in the trunk and car sounds great, why would you want to get your hands dirty and mess with vacuum lines. Also if you want car back to normal it takes 5 seconds to reconnect it. No warnings or CEL etc.
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      09-09-2007, 01:10 PM   #236
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Quote:
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Did the electrical solenoid disconnection in the trunk and car sounds great, why would you want to get your hands dirty and mess with vacuum lines. Also if you want car back to normal it takes 5 seconds to reconnect it. No warnings or CEL etc.
One, doing the wire disconnect does store an error code it is just not critical. The bearing method works better as it provides positive pressure against the valve diaphragm so it less likely to rattle at resonance.

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      09-09-2007, 01:14 PM   #237
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Quote:
Originally Posted by Orb View Post
One, doing the wire disconnect does store an error code it is just not critical. The bearing method works better as it provides positive pressure against the valve diaphragm so it less likely to rattle at resonance.

Orb
+1

Also, you can plug the solenoid in the trunk with a vaccum cap
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      09-27-2007, 01:44 AM   #238
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is it ok to unplug the solenoid if my car is a lease?
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      09-27-2007, 03:40 PM   #239
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I just did the BB mod. 4.5mm.

The flapper was open when i did it,,, didnt check it out now. Flash light low on juice, and sun is very bright.

I dont know about sound/performance. But it did actually take 15 seconds.

Just a little harder than dropping in a K&N filter. LOL
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      09-27-2007, 11:02 PM   #240
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When does the diverter valve open on a 335? Full throttle? IF so, has anyone ran a muffler bypass pipe (removing the drivers side muffler) and retained the diverter valve? In theory I would think you would have a stock sounding car during partial throttle then a mean sounding beast under full throttle. I did this to my 3.6 turbo, removed the wastegate muffler and replaced it with a bypass pipe. It sounded amazing when the wastegate opened. Just curious. THX
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      09-27-2007, 11:03 PM   #241
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Quote:
Originally Posted by L8Apex View Post
When does the diverter valve open on a 335? Full throttle? IF so, has anyone ran a muffler bypass pipe (removing the drivers side muffler) and retained the diverter valve? In theory I would think you would have a stock sounding car during partial throttle then a mean sounding beast under full throttle. I did this to my 3.6 turbo, removed the wastegate muffler and replaced it with a bypass pipe. It sounded amazing when the wastegate opened. Just curious. THX
the diverter valva open at around 2500 - 3000 rpm and up
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      11-01-2007, 10:08 PM   #242
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I just did this mod...

I just did the bearing method today and I have to say I am happy with the results. I have a sedan and the results are subtle, as expected, but definitely noticeable. The car has much more growl in the lower RPMs. I uploaded some vids on YouTube, but the results are much more noticeable when driving around. Check them out:

Before:

http://www.youtube.com/watch?v=4lyzJPgh9qg

After:

http://www.youtube.com/watch?v=KMWP-YnbW2k
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