Any Way to Limit Boost for Daily Driveability?

[Mazdanspeed]

Like the title states, is there any way of limiting the boost through the use of a boost controller to run, lets say 12 psi instead of 15.6? Just wondering...

 

[Cataphract_40]

boost controllers only increase the amount of boost you run.

If you want to limit boost maybe you could take a small drill and drill a nice hole in one of your boost tubes?

Seriously, though, you'll need some ECU adjusting to do what you're asking. I.E. accessport

 

[Mazdanspeed]

hahaha, ok then, i guess my mpg will have to remain as bad as its always been, lol.

 

[chief_wiggum]

the easiest and cheapest way to modify your boost level is recalibrating your right foot.

 

[Wagonbacker9]

the easiest and cheapest way to modify your boost level is recalibrating your right foot.

+1... lol

 

[AutoEuphoria]

What if you were to disconnect the Boost Control Solenoid...wouldn't the boost then be controlled by the wastegate alone (~10psi)?

 

[GoFast]

What if you were to disconnect the Boost Control Solenoid...wouldn't the boost then be controlled by the wastegate alone (~10psi)?

its been done before. I know there was a thread about it somewhere....

it is a very simple unplug. I believe the guy trying it blew his motor though...although, I am skeptical that this was the direct cause.

 

[Kain]

I love the innanets.

 

[eg6motion]

hahaha, ok then, i guess my mpg will have to remain as bad as its always been, lol.

lay off the pedal?

seriously, I have hit 37mpg in the ms3 via hypermiling/grandma driving.

 

[Bravnik]

Hell I average 24ish MPG with all my mods and a simi-heavy foot.

 

[matsuda]

What if you were to disconnect the Boost Control Solenoid...wouldn't the boost then be controlled by the wastegate alone (~10psi)?

Yes, it is the best way (there are no drawbacks). It takes only a few seconds to do (or undo).

Boost will be limited to ~10PSI on a stock MS3 (boost will be higher with certain mods) and the turbo will spool up more slowly.

 

[speed1585]

could you wire in a relay switch or something and run it inside the cabin like a simple on or off?

 

[matsuda]

could you wire in a relay switch or something and run it inside the cabin like a simple on or off?

Yes, it's possible.

 

[Ajburr]

Are there tunes you can load up with accessport to accomplish this? To keep the boost from rolling on too soon? Sorry for the noob question.

 

[zx2man]

sorry to beat a dead kickin screamin horse here but umm..really cant go wrong with driving style..just keep your foot off it..Honestly im running nearly 300 @ the wheels and still getting about 29-31 hwy..im averaging 26-27 mpg street-city-hwy driving..and thats with me puting my foot into it quite a few times..so if you drive conservative you should get very reasonable mpg without trying any houdini tricks on your car...just my 2 cents

 

[AutoEuphoria]

really cant go wrong with driving style

+1 This is the obvious solution. No modifications necessary. Learn to control your foot. I've had to drive around with no boost the last few weeks due to a failing fuel pump, and all it takes is some discipline and self control.

 

[mazdaspeed32007]

buy a prius. i went cross country and got 44 mpg with a hatch full of books and computer equipment.

 

[8.5MS3]

went to occ this weekend, 100 miles each way. averaged 32 mpg at 80mph. car is tuned for 18psi. learn to drive. that is all.

 

[coololddude]

Another good way to limit boost is to let your Grandma drive you around. Doesn't always work though!

 

[79535]

I just loosen the bolts on my BPV. Works great! Sarcasm just so we are clear...