Gallardo Exhaust Valve/Vacuum?

[justin220]

Can anyone explain how this works? The way I understand it, it controlled via a solenoid/vacuum arrangement and opens once the revs reach a certain point?!

Also is it present on all Gallardos? If so, can it be frigged open? Or will this lead to EM lights?

[Basher]

Yes it can be left open.... involves removing the 2 vacuum pipes from the bypass and pluggin them closed.... then valve left open .... can cause engine lights to come on on earlier cars but dont seem to be nay probs on post 06 spec cars..... and its loud ....spits pops burbles on overrun and flames on upchanges - awesome ;-) takes about 30 mins to do ....

[anonymous-user]

Why can't they do a "Fuse 22" a la Aston? Or is it more complex than that?

[justin220]

Ok thanks, and is it reversable? I presume if I try it, dont like it, I can simply fit the hose back on?

Is there a simple way to do it?

[ted 191]

justin220 said:

Ok thanks, and is it reversable? I presume if I try it, dont like it, I can simply fit the hose back on?

Is there a simple way to do it?

If it`s an 06 car, remove the large middle grill at the back, pull 2 thin rubber pipes off the metal tee peice.... job done, doesn`t sound as good as de cat tubi though

[justin220]

Thanks again! Mine is an 05 but thought it must have one because its really quiet!

[Basher]

Disconnect solenoid and no engine lights at all ?- have you tried this method ?

[bertie]

Basher said:

Disconnect solenoid and no engine lights at all ?- have you tried this method ?

Yes I'm surprised too, I would have thought the ECU would throw a fault up from not having a load connected.

[justin220]

No not yet, as I wasn't sure if it had one being and 05

[cho]

assume it is similar in concept to the Porsche sports exhaust so you should be able to unplug electrical connection without any problems as this only controls actuation of valves (i assume?)

[bertie]

cho said:

assume it is similar in concept to the Porsche sports exhaust so you should be able to unplug electrical connection without any problems as this only controls actuation of valves (i assume?)

Yes, but most ECUs these days use protected high sided drivers as output devices as they are short circuit proof and have a status line which enables the ECU to know if they are shorted, open circuit etc.

If you disconnect the solenoid the ecu knows it has no load connected and often reports an fault code.

[justin220]

Ok thanks again, is there a simple way to do it?!

[Basher]

Ted can u email me offline and let me know where you get your car serviced ? Ta