VF bimodal pin diagram

[Twoparkers]

is it possible to get them opened from the closed position ?

 

[daz_au]

Thanks cashie
If not, can the standard bimodal motors be be changed out for ones that just need a 12 volt on off switch?

I doubt its rocket science for someone to come up with a PWM generator for it to work, it just comes down to someone with the right skills having the right motivation. Chevy SS owners are asking for the same thing, someone will probably get it done eventually.

The other option would be to cut the vacuum actuators off older bimodals and weld them in place of the electronic ones. I hooked up a set of HSV vacuum actuated mufflers on a project car and although you need a vacuum line from the front, the switchgear is very simple.

 

[rucxy]

Here is a bit of light reading for you..

https://www.corvetteforum.com/forum...full-open-close-non-factory-npp-retrofit.html

I have the unit, I still need to fit it , as I have some VF II bi-modal exhausts for my SSV that still need to be fitted.

 

[cashie]

I’ve got a set of VF2 flanged BiModal Sedan mufflers and a module to drive them from the Corvette Forum design.
https://www.corvetteforum.com/forum...full-open-close-non-factory-npp-retrofit.html

I’ve sold my car now, I’ve not tested the above module but the previous owner on the Corvette Forum claims it worked well (I never got the opportunity to test before selling my car). It comes with a set of new plug connectors for the mufflers too.

Happy if someone in Perth wants to take a punt and make an offer to collect the lot from Mandurah or Rockingham.

 

[Wagonboy]

I’ve got a set of VF2 flanged BiModal Sedan mufflers and a module to drive them from the Corvette Forum design.
https://www.corvetteforum.com/forum...full-open-close-non-factory-npp-retrofit.html

I’ve sold my car now, I’ve not tested the above module but the previous owner on the Corvette Forum claims it worked well (I never got the opportunity to test before selling my car). It comes with a set of new plug connectors for the mufflers too.

Happy if someone in Perth wants to take a punt and make an offer to collect the lot from Mandurah or Rockingham.

PM sent

 

[Mattricho]

Sorry to dig up an old thread but has anyone got some series 2 bimodal mufflers working on a series 1??

I have done some googling and calling around to no avail.

Have called 2-3 auto elections and both have given up on me.

All that googling has told me is I know f**k all about car electrics lol all the pwm and -4.5v to 4.5v waves and stuff lol

I just want to be able to turn them on and off from in the car.

 

[426Cuda]

Sorry to dig up an old thread but has anyone got some series 2 bimodal mufflers working on a series 1??

I have done some googling and calling around to no avail.

Have called 2-3 auto elections and both have given up on me.

All that googling has told me is I know f**k all about car electrics lol all the pwm and -4.5v to 4.5v waves and stuff lol

I just want to be able to turn them on and off from in the car.

Hey @monstar didn't you post up some time back an ebay sourced dongle thingamajig that would work?

 

[Pablito]

I think that was a switch for series 2's that allowed you to have the valves always open without having to pull the fuse.
As far as i know, from when i looked into it a while back, no one has been able to get them too work on a series 1. Turned out to be too difficult of a job for those who tried.

 

[John Revill]

View attachment 183696View attachment 183697View attachment 183695

Does anyone know what type of plug this is. I have just purchased a pair of electric bimodals and would like to wire them up without damaging the bimodal servos.

 

[John Revill]

I am working on a prototype for a Arduino base Bluetooth/Android controller for my bimodal exhaust. Got nearly everything to built the first prototype except for the 5 pin plugs.
Here is a video of my proof of concept and is where I am at so far. It is fully functional but not practical and far from pretty.