Exhaust Flap Mod - Cap size?

[Chris1712]

Hi all,

I want to give the 'Golf Tee' mod a try, but would prefer a more secure device than a golf tee . Does anyone know the required Inner Diameter for each end (if they're different) so I can get some proper vacuum line bungs/caps instead? I've heard somewhere 3/16" but can't be sure and dunno if he meant ID/OD let alone which metric equivalent would be best.

Thanks,
Chris

 

[Chris1712]

Quick update for the benefit of others, the answer is 4mm !!

These are perfect, with a 4mm inner diameter.
http://www.autosiliconehoses.com/silicone-hose-end-caps-2-pack-blanking-plug-bung-4mm-to-32mm.html



Saves faffing with golf tees or any other mild bodges .

 

[bob4333]

Quite a lot of chat about this mod some months back ranging from makes "some difference" to "not much". What have you found.....?

 

[Maniac]

You can also just disconnect the solenoid in the boot.

 

[ronk]

You can also just disconnect the solenoid in the boot.

Is a switch an option in this case ?

 

[Maniac]

You can also just disconnect the solenoid in the boot.

Is a switch an option in this case ?

I guess with some fiddling and the right connectors but frankly it doesn’t make a vast difference so not likely worth it.

I plan to explore removal of baffling from the non quiet phase of that particular silencer so the the change is more notable and to increase the side to side warble from the dual exhaust.

 

[ronk]

Thanks for the advice
With that in mind I think I will leave the system well alone - it would be good to be able to swap with the flick of a switch but it’s not something that’s going to keep me awake at night!

 

[Chris1712]

It doesn't make a huge difference. Noticeable on start up and general pootling around town, not so much when hooning. It's maybe 5% louder, not a problem when cruising at all imo.

 

[Huzee4]

Quick update for the benefit of others, the answer is 4mm !!

These are perfect, with a 4mm inner diameter.
http://www.autosiliconehoses.com/silicone-hose-end-caps-2-pack-blanking-plug-bung-4mm-to-32mm.html



Saves faffing with golf tees or any other mild bodges .

Thanks all, silicon end caps ordered

 

[mcbutler]

You can also just disconnect the solenoid in the boot.

Is a switch an option in this case ?

disconnecting the solenoid exposes the terminals to the elements, the hose is the best option.

 

[ronk]

You can also just disconnect the solenoid in the boot.

Is a switch an option in this case ?

disconnecting the solenoid exposes the terminals to the elements, the hose is the best option.

No intention of leaving Terminals exposed but bridging the feed to the solenoid with an in car switch.

 

[john-e89]

Is a switch an option in this case ?

disconnecting the solenoid exposes the terminals to the elements, the hose is the best option.

No intention of leaving Terminals exposed but bridging the feed to the solenoid with an in car switch.

Pointless effort Ronk, it doesn’t make enough difference to bother. Once done I’m sure you’d be happy to leave as is.

 

[ronk]

I agree - I think it’s loud enough as standard - only the change down in sport is something special

 

[john-e89]

I agree - I think it’s loud enough as standard - only the change down in sport is something special

I meant do the mod then leave as is, it’s worth doing as it’s a 30 sec job with the caps and does make it sound a little more burbly and deeper but not nearly enough to need to have it switched.

 

[ronk]

I understand

However I do think is nice to have a stealth mode - I use the term “stealth “ very loosely!

 

[Chris1712]

It’s not very noticeable I wouldn’t worry about switching it. It’s not like trundling around town is suddenly offensive, it’s more of a very slight rumble at idle and more chance or a low rev pop or 2 on a slow downshift.

 

[Z4monster]

I did this with mine when the flap started to get the rattle. I pulled off the pipe, wrapped a piece of duct tape over the nozzle and then replaced the pipe back into the nozzle. It works like a dream. The pipe looks no different should anyone look at it and the flap remains wide open at all times. Much easier than finding golf tees or caps to block the fittings.

I much prefer the sound with it open but not so sure about my neighbours. I am considerate when I leave for work at 6am but it's still quite a growler even at low speeds. Love it! :evil: