something in front of the throttle blade can't create a vacuum leak. But you'd have to cork the other part I suppose and use a conventional bov. The OEM system sounds like a nifty efficiency trick, great if the aftermarket ecu can control it.

I don’t think it’ll affect it at all, just gives it abit more volume before the blower.
The MMX bypass is a brand new thing and probably isn’t on their website but is on Facebook (that’s where I saw it). They showed it as part of their Hellcat blower swap to a 6.4 kit

If I'm seeing this correct, this thing will never make boost since you removed the bypass throttle body. The boost air will be returned to air inlet. Your BOV will do nothing since it already has no boost.

Not brand new, Whipple uses them.

Should work....Rich at Fastmanefi did somthing similar.

Yes the Dominator will drive both the DBW throttle body and the bypass valve, but that is NOT what you want to do. The OEM ECU keeps the bypass closed most of the time. They open the bypass to control the rate of boost and serve as a blowoff valve on throttle release. The Dominator would drive the bypass valve proportionately (in a linear fashion) which you do not want to do.

I have done two Hellcat swaps and I replaced the bypass valve with a generic vacuum operated blowoff valve. That works GREAT and since the blowoff bleeds back into the same port that the bypass valve did, it's very quiet with no blowoff hiss. The Holley tune needs to take into consideration that the boost will come on quick and timing must compensate for any condition where the engine might be lugged at a lower RPM, but that's normal stuff.

Both cars are a blast to drive.

BTW: I have done this with both stock and Magnuson blowers and I tuned both knock sensors as a precaution because increasing the boost is very easy to do. Last one was 850 HP at the rears.

If you want more info just contact me.

I am doing a Hellcat swap into a 71 Barracuda as you all know. I am using a Holley EFI computer and harness. The original blow off for the supercharger uses a Jeep throttle body that is controlled by the computer to relieve pressure back into the intake. The Holley system cannot duplicate this function. What I have worked out, and I am no engineer, is a vacuum controlled turbo blow off valve that is plumbed back to the intake just behind the engines throttle body into an extension we fabricated. Will this work or am I overlooking something? By moving the throttle body 6-8 inches farther away from the intake, will that affect anything? I've thought about this so much I am starting to second guess myself. I know one of you out there understands I hope and can explain the technical stuff for me.

I used ms3 gold box/harnesses on all my hemi swaps. I don't know if they have them available with a program for hellcats, if not, surely they will eventually. Around 1300 for all and fully tuneable. I don't understand why people spend so much more to use a stock ecm and custom made harness of other more expensive options.

In my case, I don't like all the smaller company systems that are out there where in a few years, they may not support it any more or they may even not exist. I was going to use the Dominator until Mopar came out with the Hellcrate and the ECU / wiring harness to go with it. Unlocked and fully programmable. With what's being done by guys like HemiTuner on the factory stuff, well, that's good enough for me. Keeps my car all Mopar too. The only stuff on my car that's not Mopar are my TTI heads; Baer brakes and custom Moroso oil pan. Oh, and AlterKtion front suspension. I'm and old "old school" guy, so that pleases me.