Question for those tuned by Hermann (Cliff etc)- boost bypass mod by HBH?

[ChicagoMike]

Jymbart informed me that Hermann does the boost bypass mod under the hood on all cars he has tuned.

Is this true? I don't recall my vacuum lines being re-routed. I thought the boost bypass can be manipulated in the tune.

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[ShelbyGuy]

thats what hermann told me when he tuned my car. as far as i know, there is no boost bypass mod done on my car. nor would i do it anyway.

 

[JymBart]

Jymbart informed me that Hermann does the boost bypass mod under the hood on all cars he has tuned.

Is this true? I don't recall my vacuum lines being re-routed. I thought the boost bypass can be manipulated in the tune.

Mike, . why not call Hermann and ask about your tune? I just got off the phone with him.

JymBart

 

[Racerx66]

I believe Steggy recommends the underhood boost bypass also.

 

[1BADSNAKE]

I believe Steggy recommends the underhood boost bypass also.

does the boost bypass effect anything?

 

[Racerx66]

does the boost bypass effect anything?

The idea behind the Boost Bypass is to minimize boost "dump" between gear shifts.
Those that shift fast or power shift, probably do not experience this.

I hope that makes sense. Others please chime in with additional info.

EDIT - Here's a link to Steggy's explanation on boost loss

http://www.stiegemeier.com/blower_bypass.html

 

[1BADSNAKE]

The idea behind the Boost Bypass is to minimize boost "dump" between gear shifts.
Those that shift fast or power shift, probably do not experience this.

I hope that makes sense. Others please chime in with additional info.

EDIT - Here's a link to Steggy's explanation on boost loss

http://www.stiegemeier.com/blower_bypass.html

Im aware of the term boost bypass and yes i do power shift sometimes when i need to but i meant was can it be harmful to the blower as cause damage to it?

 

[Flyn]

Mike, R.W.T.D. has an excellent thread on the boost dump between gears on modfords.

 

[wizdawg]

Unless he did it when he was out on the road, I never saw hermann re-route any vacuum lines under the hood.

 

[JymBart]

Mike,

Now that you`ve asked, .... why not share what Hermann told you when you called him?

JymBart

 

[ChicagoMike]

Hermann said he does it manually under the hood, just switches the vac lines around.

 

[FUNDAD]

When I had my Steggy ported eaton I noticed that even after a shop turned off the Boost Bypass in my SCT tune, I would still notice during wide open throttle that the boost would start to drop. This was on the stock gauge.

I just looked it up and found RPM Outlets info on how to bypass it under the hood. So I figured what the hell.

After I did that I noticed a big difference. Probably gained at least a few more HP & TQ since she was staying in boost.

I could be wrong but I think you really have to swap those two hoses under the hood and NOT just turn it off in the tune.

 

[03Steve]

I could be wrong but I think you really have to swap those two hoses under the hood and NOT just turn it off in the tune.

Hey guys, just wanted to share a little info on this.

On an Eaton and Whipple combo, the computer can control the bypass feature. There is a small electronic solenoid on the driver's side of the blower. The computer will switch the solenoid off/on, based upon engine load.

A tuner can disable the boost bypass solenoid in two different ways. He can change a "switch" in the EEC, or he can populate the conditions for the boost bypass solenoid table with different values.

A mechanic can change vacuum lines, or simply unplug the solenoid.

The Kenne Bell bypass valve arrangement is 100% mechanical. The electronic bypass solenoid has no role, and can be removed from the car.

 

[TCG Member 5219]

I read somewhere that if its turned off in the tune, to NOT disable it under the hood. It can cause valve flutter?? Thats what I read a week ago. Cant remember where.

 

[JymBart]

For those tuned by Hermann, . it`s done in the tune and under the hood.

JymBart

 

[ShelbyGuy]

and not only that, does boost not drop off, it picks up for me. in-car cam pointed at the boost gauge doesnt lie.