Quote:
Originally Posted by RunningTooHot
I like the idea of using the factory switch as a low-key add on. Great idea!
On my 123, I installed a *really* simple home-brew setup that can be made with a small one-way brass valve with a simple ball & spring inside. I got it from Graingers, but it's been many years ago so my memory is fuzzy.
It delays the boost pressure signal from reaching the wastegate until boost has built up enough to overcome the valve's pressure setting. That allows the wastegate to stay seated longer before opening, as they have a tendency to open a bit and bleed off before full boost is achieved. If you combine the "new" valve AND adjust your wastegate to factory specs, you get a much nicer throttle (?) response. There would be no need to switch between the two functions, as you would not exceed the factory boost specs. (if that's what you set your wastegate at.)
|
Yeah, I bought the one just like what you made, it was only $20 so i said what the hell.
Amazon.com: Subaru WRX Manual Turbo Boost Controller: Automotive
And you're exactly right about the tendency to bleed off before full boost is achieved. That in itself is worth the performance gain alone. I'm not gonna lie, its pretty cool. It wouldn't be as noticeable if you had to go in and install the mbc then uninstall it to see the difference. Or to adjust the wastegate then adjust it back. Its an obvious difference in acceleration when the, dare I say, "Sport button" is activated.
