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Old 12-17-2010, 08:54 PM   #1
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Default FM Boost Controller vs Ebay Ones



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Are these all the same? If not, what makes one better than the other?
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Old 12-17-2010, 08:58 PM   #2
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I don't think it makes that much of difference (1 is from Flyin Miata the other is from Ebay). The two are very simple to make and you could make them cheaper from you local hardware store then buying one and paying for shipping.
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Old 12-17-2010, 09:32 PM   #3
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I have the one on the bottom. Paid 15 shipped and it works great. I laugh at people that pay more than 20 bux for an mbc
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Old 12-18-2010, 12:03 AM   #4
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They all suck. Lemme know if someone makes one with big ports.
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Old 12-18-2010, 12:30 AM   #5
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I have the FM one which I bought used. Works great, although I'd rather have the ebay one. Why? Because I wouldn't have to disconnect it to change the setting.
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Old 12-18-2010, 01:33 AM   #6
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Controllers with hex socket heads aren't as practical as the '****' styled ones.
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Old 12-18-2010, 05:17 AM   #7
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Anybody have experience with the in cabin models? Searching reveals only one, unless I'm using the wrong search terms.
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Old 12-18-2010, 05:23 AM   #8
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Quote:
Originally Posted by turotufas View Post
Controllers with hex socket heads aren't as practical as the '****' styled ones.
I have not a single time used a hex socket on mine. There is no difference at all: I had both styles. They work the same and you can turn either with your fingers and both tighten down with a wrench (the nut).
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Anybody have experience with the in cabin models? Searching reveals only one, unless I'm using the wrong search terms.
I've heard its not good to have it that far from the source.
But I've seen it done and it works.

If you're looking for in-cabin to be able to run different settings its kinda bad/not precise: you'll never be able to adjust it perfectly from one setting to another.
Just get an ebc or bcs in that case.
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Old 12-18-2010, 05:32 AM   #9
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Or he is talking about a remote mounted adjustment ****, boost controller still stays in engine bay.


Hallman MBC with remote adjustment
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Old 12-18-2010, 05:40 AM   #10
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No I understood what he was saying.
My thing is: how many times are you really going to need to adjust it?
The pro rx is like 120+ or so (probably more now).
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Old 12-18-2010, 05:47 AM   #11
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For reasons of safety, I would suggest "no" to the in cabin controller. Unless there was some way to ensure it wouldn't get bumped or accidentally turned. Buddy had one in his Beemer and had that happen. He said car was really fast and looked down and saw 20psi instead of 15psi.
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Old 12-18-2010, 06:16 AM   #12
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I dunno why I want one. The 5 feet of vacuum line or whatever it'd be doesnt sound good though. I wasn't talking about a remote adjustment, although I like the sound. Is there a way with a in cabin adjustment like the one I linked to be disconnected when you're not tuning? I just get annoyed when I'm within 1psi of my goal but I don't want to stop, lift the hood, adjust, and repeat. I'd like to hook up a **** for tuning purposes and then take it off.
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Old 12-18-2010, 12:04 PM   #13
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FM doesnt sell that one anymore do they? FWIW you can build it for under $20 yourself.
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Old 12-18-2010, 12:14 PM   #14
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Quote:
Originally Posted by curly View Post
I dunno why I want one. The 5 feet of vacuum line or whatever it'd be doesnt sound good though. I wasn't talking about a remote adjustment, although I like the sound. Is there a way with a in cabin adjustment like the one I linked to be disconnected when you're not tuning? I just get annoyed when I'm within 1psi of my goal but I don't want to stop, lift the hood, adjust, and repeat. I'd like to hook up a **** for tuning purposes and then take it off.
you have MS just do the ebc mod and be done with it.
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Old 12-18-2010, 12:47 PM   #15
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he has ms-i and the EBC with ms-i is not that great.
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Old 12-18-2010, 01:26 PM   #16
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Quote:
Originally Posted by 18psi View Post
I laugh at people that pay more than 20 bux for an mbc
I laugh at people who buy them. Ordered enough parts to build 5, kept mine, sold the rest and made a profit.
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Old 12-18-2010, 01:48 PM   #17
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EBC in general is more hassle than it's worth. People who claim otherwise are gay communists.

Just get a good ball-n-spring MBC, take the reference from a point after the intercooler but before the TB, set it and forget it.

I wish I still had the little eBay-sourced unit I had which was similar to the one in the second picture of the first post. I ripped it out and replaced it with an expensive TurboXS MBC when I was fighting a boost sag problem, which was before I had my "Eureka!" moment and realized that the problem wasn't the boost controller but rather the location of the reference signal. (I was still trying to use the little nipple on the compressor outlet at the time.)

I'd have liked to have had the opportunity to do an A-B comparison between them.
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Old 12-18-2010, 02:13 PM   #18
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Quote:
Originally Posted by Joe Perez View Post
EBC in general is more hassle than it's worth. People who claim otherwise are gay communists.
I will again bring up the topic of TPS CONTROLLED BOOST. Getting 12 psi of boost at 30% throttle doesn't a finely driveable car make.

And a properly implemented EBC will work very well at preventing overshoot:

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Old 12-18-2010, 02:47 PM   #19
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Quote:
Originally Posted by 18psi View Post
I have the one on the bottom. Paid 15 shipped and it works great. I laugh at people that pay more than 20 bux for an mbc
This. Works great.
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