Linking headlights to interior light

[Meir]

Originally Posted by geraintthomas

I've also got bypass pipes, and would have loved electronic valves. The electrics aren't worrying me, it's what valves to use. They'd need to be small to fit in the space. What did you use?

im using vaves taken from a BMW 335i, that are 2inch in diameter.
not sure what bypass you have, but in my opinion that guy did it right.
http://986forum.com/forums/general-discussions/50649-homemade-pse-version-1-0-done-behold-evan-sport-exhaust-pics-vid-writeup-%3D.html

if my experiment works well, mayby i will build another set with the capristo valves.
ExhaustSystems » Exhaust Valves » Exhaust parts » Car Models » Capristo Automotive

[geraintthomas]

Originally Posted by Meir

im using vaves taken from a BMW 335i, that are 2inch in diameter.
not sure what bypass you have, but in my opinion that guy did it right.
http://986forum.com/forums/general-discussions/50649-homemade-pse-version-1-0-done-behold-evan-sport-exhaust-pics-vid-writeup-%3D.html

if my experiment works well, mayby i will build another set with the capristo valves.
ExhaustSystems » Exhaust Valves » Exhaust parts » Car Models » Capristo Automotive

I've had this done to mine:



A pipe that connects just after the CAT's, and goes straight to the tail pipes. Same on each side. The sound is incredible and it was very cheap to do ($150 in dollars, all in).

And was wondering if there were small electronic valves that I could put on the pipes where they attach the pipe after the CAT's. Trouble is I can't find any that are small enough as mine are 1" pipes, and the ones I can find are vacuum actuated and not electronic. I'd happily fit a vacuum solenoid with a switch on the dashboard, but where on earth do you get a vacuum supply from to go into the solenoid? If there's a good way of supplying a vacuum feed to a solenoid, then yeah, I'd do it

[Meir]

From the picture it’s hard to tell the diameter of the bypass pipe, but if the pipe is 1.5" you can go with the 2" valve and use a reducer. I personally don’t like the electric version of these valves, but it can be done with both.
2.0" Electric Exhaust Cutout Downpipe Kit E-Cut Catback Valve Manual System | eBay
If you look at the link I posted before, the guy shows in detail the hookup of the vacuum system and the electrical portion of the control.
Not too complicated.
I started with 2” -1.75” reducer so the bypass pipe is 1.75, and the valve is 2”.
2” is the smallest valve I could find. I’m currently straggling with the 180 degree U pipe that I will probably have to fabricate, or change the plan and go with 2”-1.5” reducer and 1.5" piping.
You can see more about project here:
General piping question
I still need to work on my fabrication and welding skills so I’m learning.