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E36/7 Z3 (1996-2002)
E36/7 Z3 Roadster, Z3 coupe, Z3 M Roadster and Z3 M Coupe talk with our gurus here.

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  #1  
Old 06-11-2012, 08:27 AM
Benjamin757 Benjamin757 is offline
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1998 z3 2.8; throttle body spacers?

I've read about this. Not so concerned about hp and torque gain, but does it really increase your fuel milage? Would'nt mind that. Anyone have any input?
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  #2  
Old 06-11-2012, 09:00 AM
RacerXTreme7 RacerXTreme7 is offline
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Snake oil garbage.

~Mike....
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  #3  
Old 06-11-2012, 09:19 AM
Benjamin757 Benjamin757 is offline
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limited, one sided and not useful info. thanks anyway fellow statesman
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  #4  
Old 06-11-2012, 09:29 AM
wifesauto wifesauto is offline
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save your money..................btw..........snake oil garbage
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  #5  
Old 06-11-2012, 09:37 AM
Blacklane Blacklane is offline
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I am certainly skeptical. In the days of carburetors, these things were supposed to better "mix" the fuel/air, now they're upstream of the injectors so are supposed to "increase air volume." I don't think they do much more than lighten the owner's billfold.

I'm reminded of a conversation I had with an automotive company engineer who said that they investigate and reject all sorts of engine add-ons and mods. Given the enormous competitive pressure to produce a powerful, fuel-efficient engine, they would gladly add something that actually worked. However almost none of the miracle ideas actually do.

Given the complexity of the throttle body system, the intake valve timing, the injector timing, etc., I can't imagine the BMW engineers slapping their forehead saying. "Why didn't we think of adding another spacer in there?"

However, I have no actual experience with these devices (nor fuel line magnets, the "turbinator," or similar gadgets). Maybe you would be willing to take some before-and-after measurements of fuel economy and performance and report back to the rest of us.

Popular mechanics reviewed a bunch of these products a few years ago and came up with this conclusion:

THE MORAL OF THE STORY
We've tested nowhere near all of the fuel-saver gadgets on the market, and I'm sure purveyors of others will be waiting in our lobby soon. But not one of the items we tested worked. At all. There's no ignoring the laws of physics, people. Your vehicle already burns over 99 percent of the fuel you pay for. Less than 1 percent is squandered as partially burned hydrocarbons and carbon monoxide before the exhaust hits the catalytic converter for the last laundering. Even if one of these miracle gadgets could make the combustion process 100 percent complete, the improvement in mileage resulting would be 1 percent. Any device that claims quantum-level increases needs to be examined with considerable skepticism.
http://www.popularmechanics.com/cars...ileage/1802932
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  #6  
Old 06-11-2012, 10:49 AM
Benjamin757 Benjamin757 is offline
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thank you thats more like it. Much appreciated.
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  #7  
Old 06-11-2012, 11:43 AM
RacerXTreme7 RacerXTreme7 is offline
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Quote:
Originally Posted by Benjamin757 View Post
limited, one sided and not useful info. thanks anyway fellow statesman
Your welcome ignorant consumer!

~Mike....
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  #8  
Old 06-11-2012, 12:27 PM
Benjamin757 Benjamin757 is offline
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and they say VA is for lovers......
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  #9  
Old 06-13-2012, 06:37 PM
tohbi tohbi is offline
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used to be, a spacer under the carburetor was supposed to increase torque.

a friend studied carburetors and told me the only way to increase mileage significantly was to preheat the fuel.
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