Throttle body ground

eyeballs

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2012 Mazda 2 Touring SG 5MT
Anyone try it yet? 3 and 5 owners report significant gains in throttle response. If I have time one of these days I'll test it out.
 
Anyone try it yet? 3 and 5 owners report significant gains in throttle response. If I have time one of these days I'll test it out.

Agreed - I would love to see a how-to on this if anyone is finding it to be a positive/noteable change on the 2!
 
Its super simple. Just get some decent wire (8-10 guage should be OK) and a pair of ring terminals. Measure out the desired length for however you want to route the wire. You'll be connecting one terminal to a bolt on the throttle body, and the other to a bolt on the body (factory ground location, strut top bolt, etc). Crimp and/or soldier the ends on, and attach your ground wire.

Grounding kits are an extremely common modification, this is just a more targeted approach which seems to help throttle response on some of mazdas other drive by wire applications.
 
I just found an extra piece of 8g wire in my toolbox. If I can find a couple extra ring terminals, I'll throw it on and see.
Kwatts, if you see this and I have extra, I'll make one for you too buddy.
 
You'll be connecting one terminal to a bolt on the throttle body, and the other to a bolt on the body (factory ground location, strut top bolt, etc).

Reminds me: once I was autoxing a car with a half-dead battery. Forgot to turn my radio off when going to work the course, and 2 hours later the car wouldn't start. Not to worry -- the whole paddock of automotive enthusiasts, right?

Quickly found a guy with jumper cable, attached (+) to the battery terminal and (-) to the strut top bolt. Crank -- and nothing (starter clicking, but not cranking). Had to tow the car home (thought the starter was dead).

At home, with no pressure, measured everything, took out the starter (it was fine), charged the battery. As it appeared, there was nothing wrong with the car except dead battery, but there was quite a resistance between the strut top bolt and the car ground. Go figure!
 
I decided I'm going to try and get a full kit. I contacted flex innovations to see if they can make some custom wires for me. If not, I might try the kit for the 3 that they have for $40 shipped. If they're still around. HKS has a kit on ebay for $25 but I really don't want a bunch of red wires in the engine bay.

Somehow I've changed my driving habits into gas conservation style and have been averaging 38.4mpg around town. I'm curious to see if a grounding kit will make an improvement (in addition to reducing the throttle delay). I have no idea how long I'll be able to drive like this though...not much fun (but quite relaxing).

edit: they are still around...and still reply very quickly to emails! I just need to measure out the lenghts for the wires and the bolt sizes for the terminal rings.
 
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Would love too see a how-to, I don't quite understand the mod. I'll definitely give it a shot if it works though haha
 
I decided I'm going to try and get a full kit. I contacted flex innovations to see if they can make some custom wires for me. If not, I might try the kit for the 3 that they have for $40 shipped. If they're still around. HKS has a kit on ebay for $25 but I really don't want a bunch of red wires in the engine bay.

Somehow I've changed my driving habits into gas conservation style and have been averaging 38.4mpg around town. I'm curious to see if a grounding kit will make an improvement (in addition to reducing the throttle delay). I have no idea how long I'll be able to drive like this though...not much fun (but quite relaxing).

edit: they are still around...and still reply very quickly to emails! I just need to measure out the lenghts for the wires and the bolt sizes for the terminal rings.

Eyeballs, make sure to update us on that (and basic how-to if possible) - I'm really curious to try a kit out myself if you notice a change in throttle body response! Fingers crossed!
 
Thanks for the protip, I'll still spend a few bucks and a few minutes under the hood to find out myself when I have the time.
 
Next time we have the 2 on the dyno we can do a back to back test if you really want to see if it makes a difference.
 
Yeah, be sure to test the factory ground to make sure that it's at 0V. And then wire in your own ground wire, and make sure it's 0V.

It makes complete sense that having a local ground would vastly improve throttle response, because the ground would only be a foot away versus multiple feet. This is 100% necessary because electrons only travel at the speed of light.
 
Oh, just in case if you know what you're going to be gaining:

1 foot / c = 1.01670336 nanoseconds
6 feet / c = 6.10022017 nanoseconds

Sounds about right.
 
Not sure I get it. But I do know that a Throttle Body Ground has been done before both of you (Phone and really?) decided to chime in and be real Class A characters and TBG's will continue to be done afterwards.

And to criticize Corksport because they are willing to provide proof of a gain or not is a lot better than simply stating your an "Electrical Engineer".
 
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Thread cleanup

Yeah, be sure to test the factory ground to make sure that it's at 0V. And then wire in your own ground wire, and make sure it's 0V.

It makes complete sense that having a local ground would vastly improve throttle response, because the ground would only be a foot away versus multiple feet. This is 100% necessary because electrons only travel at the speed of light.

Actually, electrons do not travel at the speed of light.

But anyways, Phone, we need a little better constructive posts around here. I've looked at most of yours, and they really aren't useful.

The OP in this thread basically summed it up already. Mz3 and 5 owners have had good results with it. They say it improves throttle response in that the throttle lag is reduced. Lets just say the factory ground is sub par.
 
if im 6 nanoseconds faster than the guy next to me at the drag i win. so im down for 6ns gain. (thats what he means right?) anything i can do to help me live my life better a quarter mile at a time.
 
Corksport is a great vendor, he's nice. I have no beef with him. I do mind all of the people who are buying into snake oil, though. If he wants to put a 2 on a dyno, that's fantastic; he has the means to do so and it's helpful to the community and he can be seen a valuable resource.

However, let's take a look at what I was saying and take a look to see what a dyno would show:

I am going to take the premise "Adding an extra/external ground to the throttle body will improve response time." Response time is a function of time, I am willing to go along with the hypothetical that it will improve response time. That is my assumption for this individual case.

A dynamometer measures force, the moment of force (torques), or power.[1] The power output of any given engine has a lot of parameters; however, it can essentially be boiled down to Air vs Fuel mixture at a specific frequency of time in relation to the motor (RPM). So at any given RPM, depending on the amount of air and fuel a motor can take in, an engine will produce a specific amount of power. This can be altered (positively or negatively) by changing certain parameters, for example: switching out an air filter to one with more surface area has the potential to move more air into the intake. With more air entering into the engine, you can add more gas; therefore, more power.

The throttle body on a car has a maximum limit of how many units of air it can move over time; it has a specific size and only so much air can enter it when it's fully open. This will not change with relation to the time domain. Ever.

How does this affect the power output? It won't. The power out has the potential to come sooner in relation to time; however, it does not have the potential to be affected by the time it takes for the throttle body to open. It is an apple and oranges comparison. The throttle body's size doesn't magically change when a ground is or isn't added. It's the same throttle body. I am more than willing to put money on the fact that power output will not change with a grounded throttle body.

Lastly, I'd like to thank Rockin03MP5 for not taking the time to think about the physics involved with grounding a throttle body and not having tangible proof that grounding a throttle body will change something. I am sorry that you feel that re-creatable processes has no place on this forum.

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[1] - Wikipedia: Horsepower http://en.wikipedia.org/wiki/Horsepower
 
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