Bypass actuator

[Robby Martin]

I have 2006 Roush Mustang GT, MMR 4.6 750hp Cobra forged iron block. I hav e a tvs phase 2 supercharger. I recently had an e85 swap , tuner added 1000cc (95lb) injectors, Deatch werks 300 fuel pumps, and a larger heat exchanger, 10% innovator west overdrive crank pulley, runs good, but throttle response is crap, tuner said the computer is reading cold. He mentioned getting a different bypass actuator , he mentioned a bypass closing around 3000 rpm, Said he could accomplish this with window switch like a nitrous controller. He also mentioned a Mopar guy in New Jersey who makes some sort of bypass for the tvs 2300 that would work. It did put out 658 RWHP on Mustang dyno. You pretty much have to ease into every gear, or it falls out(throttle response). Problem is I can’t seem to get him to finish, too busy, I guess. Any suggestions would be greatly appreciated. Thank you


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[stkjock]

Is this “tuner” a well know specialist with mustangs and 3Vs?

 

[Robby Martin]

I thought maybe I could finish it up, I’m basically wondering if that switch idea is a good one.? Or maybe try and take it somewhere else, I’m just wanting it done. I’m in the Okc area, and they’re aren’t a lot of tuners around, Ford 3v anyway. I would like to just go ahead and buy what I need to get it done. My tuner is not hot e talkative type. Maybe somebody out there has heard of this problem. Thanks


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[msvela448]

I think JDM Engineering still has a second shop in Texas. They are excellent at 3v tuning. You might give them a call and schedule some tuning time.

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[Robby Martin]

Thank you, I’ll check it out.


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[stkjock]

I asked because in the 14 years I’ve been involved in the S197 platform I’ve never heard of this issue. I think a remote tune from a top tier tuner would be better, Lito,Lund, VMP for instance.

 

[Robby Martin]

Yeah, it wasn’t cheap either. I’m definitely going to get it right, or should i say, have somebody get it right. A friend told me about a place called HPP Racing in Garland Texas, that is supposed to be awesome. I will check around for sure. Thanks for the input.


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[Robby Martin]

I’ll check out the remote tunes you mentioned also.


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[msvela448]

https://www.teamjdm.com/

They do remote tunes as well. I think my car drives better than it did from Ford. Driveability is second to none. I have extensive mods... Fuel system, injectors, cams, stroker, supercharger, exhaust, gears, etc... They tuned it for everything.

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[07 Boss]

Did the TVS come with a bypass or is it constantly pumping air into the motor?

 

[RED09GT]

What does he mean the computer is reading cold? IAT, coolant, oil, or what? Does he maybe mean the engine stays in open loop?
The talk of having a window switch to control the actuator sounds fishy as well.
I would verify that all the vacuum hoses are in the right spots and that there are no leaks as well.
I'm with stkjock, I've never heard a complaint about slow throttle response with a p/d blower 3v.

 

[Robby Martin]

Did the TVS come with a bypass or is it constantly pumping air into the motor?

I believe it has a bypass, I’m kind of new to the supercharged world[emoji3] Here’s a pic

I’ve had it for about a year and a half. Still learning. Not really sure of the bypass location.


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[Robby Martin]

What does he mean the computer is reading cold? IAT, coolant, oil, or what? Does he maybe mean the engine stays in open loop?
The talk of having a window switch to control the actuator sounds fishy as well.
I would verify that all the vacuum hoses are in the right spots and that there are no leaks as well.
I'm with stkjock, I've never heard a complaint about slow throttle response with a p/d blower 3v.

I just read over some texts , and he’s talking about engine coolant being over 160* it runs fine, anything below low that it stumbles, as he says. The throttle response is non - existent at any temp. It does run better, but not how it should. I’m definitely open to all ideas. Tuners are limited around here, especially Ford. I’m in the Okc area.


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[stkjock]

Can’t tell in your images

 

[Robby Martin]

Can’t tell in your images

Yes it does. Looking now


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[Midlife Crises]

The bypass actuator on the TVS is vacuum operated. Not dependent on RPM. As already stated make sure the vacuum hose is connected to the correct port. You really only need one side hooked up to operate. It is opened with vacuum. The only complaint I have read about is some cams don’t provide a good vacuum to open the valve and you get Blower Serge trying to idle. You need a different tuner as well.

 

[Robby Martin]

The bypass actuator on the TVS is vacuum operated. Not dependent on RPM. As already stated make sure the vacuum hose is connected to the correct port. You really only need one side hooked up to operate. It is closed with vacuum. The only complaint I have read about is some cams don’t provide a good vacuum to close the valve and you get Blower Serge trying to idle. You need a different tuner as well.

I have Brenspeed Detroit rocker cams, and I will have to read up on correct port for vacuum hose. New tuner is a done deal. Looking now. Thanks


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[Midlife Crises]

I have Brenspeed Detroit rocker cams, and I will have to read up on correct port for vacuum hose. New tuner is a done deal. Looking now. Thanks


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I had to correct my statement about the bypass valve operation. Vacuum opens the valve. Sorry if I misled you.
Your using Detroit Rockers, are they the blower version or the NA version?

 

[Robby Martin]

I had to correct my statement about the bypass valve operation. Vacuum opens the valve. Sorry if I misled you.
Your using Detroit Rockers, are they the blower version or the NA version?

Blower version , it was built, MMR iron block, cams, and supercharger, at the same time, does have original heads. Does have upgraded springs , valves. Original engine left shop with no oil, what I was told. Has about 30,000, on new one.


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[MrAwesome987]

I have the same cams. The stock bypass valve should be fine. I think your problem is most likely entirely lack of a good tuner. It's possible you may need a higher thermostat as well?

 

[07 Boss]

Have Lito tune your car! Shouldn't have any issues after that.