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Old 04-06-2007, 03:22 AM   #1
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Default adjustable boost on the fly

hey guys is there some switch that could be rigged up to lower boost? like if i had my system tuned for like 12 psi but i wanted to detune it for if my buddy was gonna barrow my car (hypotheticaly) like could you have a servo on the waste gate to make it open earlier? would the fuel system recover, or are u just stuck with hi boost (oh darn ) come to think of it it would probably save on gas cause you wouldn't have to run such a rick ratio... anythoughts?
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Old 04-06-2007, 03:42 AM   #2
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it's called an electronic boost controller.
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Old 04-06-2007, 05:49 AM   #3
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You can make your own with 2 boost settings. All you need is a 12v nematic solenoid with 2 mbc's. Hook it up to a switch and your all set.
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Old 04-06-2007, 08:31 AM   #4
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Quote:
Originally Posted by MiataNuTca View Post
You can make your own with 2 boost settings. All you need is a 12v nematic solenoid with 2 mbc's. Hook it up to a switch and your all set.
This is the simplest route... but with 1 MBC. His 1 setting can be the stock internal/external WG rate... and then mbc can be his other boost setting.
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Old 04-06-2007, 08:50 AM   #5
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I have mine set up with a high/low switch. I feed the vac/pressure line to a solenoid that normally lets the flow go to the wastegate(8psi). For higher pressure, it feeds to a Hallman and then to the wastegate(15psi). The switch is a toggle next to the parking brake.
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Old 04-06-2007, 10:06 AM   #6
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you could use some nylon tubing to move your MBC inside the cabin. Never tried it but I think that'd work.

Nylon tubing is a pretty small diameter plus it doesnt expand, making useage over long distances feasible.
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Old 04-06-2007, 06:22 PM   #7
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cool guys thanks, i knew there was some way to do it, i just didn't know how.
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Old 04-06-2007, 09:20 PM   #8
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There is also the $200 Tullos Technology EBC as an option, it uses the GM boost solenoid.
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