+1 on getting a video in here! Sounds too easy to work

 

Golf tee mods are done on many cars. Anything with a vacuum actuated flap, i.e. pretty much all the cars you see on the road with one clean and one dirty tail pipe, can benefit in the low end noise department.

 

BMW 335 is another car that you can do this too.

 

In for he video.

 

Let me guess, unplug the tubes and stick the tees in there? A buddy of mine was just telling me about this trick last night.

Can't wait to see the video too!

 

will a Q tip work? How about a tampon? Just trying to get the costs down... Plus with the tampon it can come in handy with all the pu$$y you would get in your meaner sounding 458.

 

my friend did this to his 612
YouTube - ‪Ferrari 612 HGTS Scaglietti INSANE Accelerations! + Rev and downshift‬‏

 

I googled this and found this guide (specifically for 1 series though) by User "FreeBMW.net"

This mod will yeild a slightly louder exhaust note below 3000 rpm which is when the valve would normaly open. This method will not cause a CEL/MIL or be detectable by a scan of the DME/ECU but it can be seen pretty easy if visually inspected.

Needed items: two 3/16th vacum line plugs, one 3/16 vacum line male/male barbed fitting and about 15 mins.

The procedure:

1. Park car on level surface and set parking brake. I also recomend using a wheel chauk to prevent the car from rolling onto you in a freak acident.

2. Crawl under the car right behind the drivers side rear wheel and locate the flapper valve actuator on the left exhuast tip tubing. It will have a black hose with a yellow stripe pluged in to the actuator.

3. Remove the hose from the actuator by pulling and twisting on the hose.

4. On the actuator use one of the 3/16 vacum plugs and plug and cover the nipple you just pulled the hose off of.

5. Put the other vacum plug on one end of the male/male barbed fitting.

6. Use the plugged male/male barbed fitting to plug the open hose you removed from the actuator.

7. Tuck the plugged hose behind the metal bumper support.

8. Start the car and enjoy the new found grumble.


An optional install would be to have the car running while you pull the vacum hose from the actuator. you will hear the flapper open and the new sound. Make sure the car is not in gear so you dont run yourself over and dont let it run too long or the exhasut could get hot.

Pics below....





DIY: Golf tee mod / exhaust flapper disable w/ pictures - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


Unrelated (as far as I know) video guide on how to do it

http://www.youtube.com/watch?v=7go7fK5-_6M

 

Cant wait to see the video, I've just done a similar modification to a AM DBS and it sounds phenomenal. I've just saved my uncle the $ of getting an aftermarket exhaust, the exhaust note is fantastic and the best thing is that the dealership did it for free.

The 458 sounds phenomenal from the outside once the valves open up, just wish it sounds as loud as the F430 in idle. Hope this solves it.

 

cannot wait to hear this, I wonder how difficult a similar mod would be for my lp560