hi i got a sc 02 hd is there a bad side to doing the boost bypass mod

 

Its been done on my truck, only good things to be said.

 

I've heard a couple say things about it, but nothing has ever been posted to support what has been said. I've done mine...it's all good.

 

any bad gas mpg or worry about it messen up the motor ruff running

 

here is a free boost bypass mod for the track, unplug when you arrive, plug in when you leave.

 

Are there any negative effects from leaving that plug unplugged? Mine's been off since I bought it... two and a half years or more. No codes or anything but is my mileage maybe being affected or am I putting unecessary strain on anything? Thx.

,Marc

 

It won't affect your mileage.
Most of us who are modded have it turned off in our tune anyway.

 

To answer the question, you need to know why Ford did it in the first place. It wasn't a practical joke by a rogue engineer.

"As for WHY we have a device that would kill boost on the truck, here goes . . . The PCM monitors everything that is going on with the drivetrain. There are several "failsafes" (7, I believe) that if the PCM sees, it will kill boost to the motor, in order to decrease power output. The main reason people started disconnecting the boost solenoid, is a failsafe called Brake Torque. This failsafe occurs when the PCM sees the brake pedal applied, and the throttle at WOT, also known as a burnout. When you are at the track, and you do a burnout, then make your pass, and the truck hits second gear and kills boost, then you run a 16 second ET, that's because of the Brake Torque failsafe . There are several other ones, such as excessive misfire, high ECT temp, malfunctioning sensor default, high trans temp, rev limit, and a few others. Contrary to what some believe, there is NO overboost failsafe. The PCM does not sense boost, and there is no sensor on the truck that reads boost."

So it's designed to protect your engine under those circumstances. If you defeat it, you lose the protection. So the question is how important is that protection to you?

There is no right or wrong answer. For me, I've never dumped, so why defeat it?

 

Tim you've never dumped ? Man you must be ready to EXPLODE ......



I guess the Boost By Pass Mod should be looked at kind of like Torque Reduction and the Rev Limiter. For a stock truck and someone not looking to squeeze every ounch of ET out of it "ok I guess you can live with it".
You meaning someone esle NOT ME, I would have sold my truck in 2 weeks if I wasnt able to turn off tq reduction and raise the limiter. Is it more stress on the Motor and Trans "HELL YA IT IS", but is it better for ET and Racing --> OH YA.......

As Tim explained Jacov, it will usually only mess you up AFTER a good smokey,
for those racing that is a concern so basically everyone turns it off....
I believe the KB's dont even have a By-Pass right ???
So is it needed ? "NO"
Do you want to disconnct it ? you really only have to at the track.
Some of us are just Boost Monsters and dont want to take a chance ANYTIME
GUILTY AS CHARGED

 

so if you can just un plug the wires could you put it on a swich in the cab / under the dash

 

You know no ones every asked that and I dont know if anyones tried it,
but I would imagine if you got the right wire WHY NOT ?