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Old Sep 11, 2004
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Overboost Protection....

I was just reading the book Maximum Boost by Corky Bell, and he suggests this as an overboost protection device

could this really help???



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Old Sep 11, 2004
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It will work. EVEN easier way to solve the problem, just buy a GReddy Profec B Spec 2 EBC and set the warning function. DONE!
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Old Sep 11, 2004
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^ the method showed is a lot cheaper than a GReddy Profec B Spec 2 EBC tho...
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Old Sep 11, 2004
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umm, let me see. You are running WOT, and the boost goes up to the amount of the switch. Then, the switch engages and cuts your fuel pressure off completely. Causing a severe lean condition, and your pistons melt to the side of the block, the rods go through the side, and the bearings spin in complete fun.

Yeah, this would work great! Not to mention that these switches are not completely accurate.

A blow off valve only purges excessive air from the system, not fuel. So the system only gets rich and bogs a bit. No fun engine damage.

You don't always get what you pay for, but you always eventually pay.
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Old Sep 11, 2004
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Originally Posted by Gotti
^ the method showed is a lot cheaper than a GReddy Profec B Spec 2 EBC tho...
Why would you run without an EBC?

It just makes sense. Once again, your gonna spend $3-4000 and not spend another $350 for a good EBC?

Remember you get what you put into it.
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Old Sep 11, 2004
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i have a E-O1 but dont really know how to tune it, cuz it spiked at 16psi
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Old Sep 11, 2004
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Originally Posted by CivicMexicano
i have a E-O1 but dont really know how to tune it, cuz it spiked at 16psi
Can't help you on the E-01. I only use the Profec B

I didn't like the little LCD screen and the capability of being able control boost from it. I felt safer with just the seperate units.
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Old Sep 11, 2004
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Originally Posted by dezod
Why would you run without an EBC?

It just makes sense. Once again, your gonna spend $3-4000 and not spend another $350 for a good EBC?

Remember you get what you put into it.

not everyone is a dealer and gets parts at cost.

I spent alot and i hit a wall. I can't afford anymore parts right now. I need a clutch and i just simply can't afford it

I was using ohmysac's MBC.......it worked great, but i lost the ball inside of it. So, now i am just using the wastegate actuator rod to control my boost.
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Old Sep 11, 2004
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Originally Posted by civic01vtec
not everyone is a dealer and gets parts at cost.

I spent alot and i hit a wall. I can't afford anymore parts right now. I need a clutch and i just simply can't afford it

I was using ohmysac's MBC.......it worked great, but i lost the ball inside of it. So, now i am just using the wastegate actuator rod to control my boost.
$350 is not my cost, it is average retail cost. These units are such minimal mark up it would make you sick on how little we ACTUALLY make on these. You have to pay to play. I'll hook you up with a nice deal on a clutch. Lemme know!
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Old Sep 11, 2004
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Originally Posted by civic01vtec
not everyone is a dealer and gets parts at cost.

I spent alot and i hit a wall. I can't afford anymore parts right now. I need a clutch and i just simply can't afford it

I was using ohmysac's MBC.......it worked great, but i lost the ball inside of it. So, now i am just using the wastegate actuator rod to control my boost.
Nothing wrong with a MBC - I'm using the Hallman pro - awesome MBC! Holds rock solid boost....
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Old Sep 11, 2004
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my turboXS dual stage is working awesome, no problems at all...im goin to go with a profec B in 3 weeks when i dyno my car again...but im not loaded with cash either, but i keep my car straight, i rather be ripped off in price than quality
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Old Sep 11, 2004
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Fuel cut on a Civic... do we want to analyze how many things are wrong with that picture? Ka-boom!

Not much is wrong with ignition cut, until you have all your fuel exploding in your exhaust housing of the turbo, or the nearest exhaust leak. Not to mention what the ECU will do to compensate for the total lack of spark. But this is still a much better solution than fuel cut, and a good idea. Most aftermarket ECM's include boost-dependent ignition cut, does the E-Manage?

EBC's are not required, and most EBC's are no more accurate against overboost than a manual boost controller. Besides... if you're overboosting with an EBC, something has already failed, and that means the EBC is going to be able to do jack squat to stop the overboost situation except sound a buzzer. A warning light hooked up to a boost switch or a boost gauge with warning capability is better.
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Old Sep 11, 2004
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dezod, maybe I'd rather pay $80 for an MBC that works fine...than forking out another $250 for an EBC. Plus, MBC's are a hell of a lot easier to install.
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Old Sep 12, 2004
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Originally Posted by RiceBurnrEX
Fuel cut on a Civic... do we want to analyze how many things are wrong with that picture? Ka-boom!

Not much is wrong with ignition cut, until you have all your fuel exploding in your exhaust housing of the turbo, or the nearest exhaust leak. Not to mention what the ECU will do to compensate for the total lack of spark. But this is still a much better solution than fuel cut, and a good idea. Most aftermarket ECM's include boost-dependent ignition cut, does the E-Manage?

EBC's are not required, and most EBC's are no more accurate against overboost than a manual boost controller. Besides... if you're overboosting with an EBC, something has already failed, and that means the EBC is going to be able to do jack squat to stop the overboost situation except sound a buzzer. A warning light hooked up to a boost switch or a boost gauge with warning capability is better.
Just get a pop-off valve - problem solved. Another member talked about this already....HKS makes one...
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Old Sep 12, 2004
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I paid EXACTLY $297 for my Profec B....got it off ebay...BRAND NEW!!
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Old Sep 12, 2004
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Most factory turbo'd cars have a stock fuel cut, my mazda had one at 10 psi, that had to be removed though
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Old Sep 12, 2004
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Originally Posted by civic01vtec
I was using ohmysac's MBC.......it worked great, but i lost the ball inside of it. So, now i am just using the wastegate actuator rod to control my boost.
how did you end up losing the ball?
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