mcx second blowoff valve

[madsledder]

I have a mcx rear mount with a big bov in the front, but i'm wandering if a second one in the back would help keep the turbo spooled?

 

[rxrider]

Signal line from the vacuum source behind carbs would be rather long, signal delay may be a problem. Might be a lot better with anouther BOV installed in the plenum of the Intercooler, after the IC core. Although you run a big BOV you may not get the performance you want out of it. I would suggest buying a Vortech Race Bypass, it has lightning fast response to throttle changes.

 

[robertyoke]

are you using mcx's blow off that came mounted on the innercooler?

just putting in a softer spring in in that bov made a huge diffrence in keeping spool up and reducing bark.

 

[rxrider]

First I used only the Vortech, removed the mitsubishi BOV and installed a plate over the hole where it used to be. Although the Vortech worked flawlessly it was not able to remove pressure in the plenum fast enough resulting in pig rich conditions so I reinstalled the Mitsu in the IC and ran it like that for most of the last season. The pig rich condition were improved on, but not totally cured. This year I'm taking the pressure signal from carb boots to cure the rich condition when wacking the throttle shot and WOT again.

The little mitsu can be blown open so a softer spring is not the way to go when running high boost, it will blow open, the Vortech will not blow open regardless of boostlevel.

 

[TBird]

What rxrider says, he's da man!