Throttle body ground

[Racebrewer]

Actually, if it is an inertia dyno, it will very easily show throttle response as it produces graphs that include a time factor. At least mine does. For example, bad jetting shows up as stumbles (dips and flat spots in the graphs).

If Corksport holds it steady at 2,000 rpm and then floors it, they should get results.

John

 

[Phone]

The time-domain element on a dyno is rolled (ha) into the Engine RPM, so the response time of the throttle body cannot have an impact on power output whatsoever. Power is work over time, and the time is "revolutions per minute".

Not saying that an inertia dyno won't show the TB position, but it seems like the A:F ratio would be more worthwhile to put on the dyno chart.

 

[kwaits92]

The OP was directed towards response time.
If you hypothetically agree it could improve response time there is no need for pointless argument.
Even if it doesn't work but the user feels as if it does then what's the harm to you?
To each their own.

 

[Racebrewer]

The dyno data should also produce an engine acceleration, RPM per second graph.

Wasn't thinking of an throttle position input, although that might be interesting, especially if there was also a gas pedal position input.

A/F is just another input. It depends upon which dyno hardware/software you are using.

So much data, so little time to stare.

John

 

[Phone]

The OP was directed towards response time.
If you hypothetically agree it could improve response time there is no need for pointless argument.
Even if it doesn't work but the user feels as if it does then what's the harm to you?
To each their own.

Well, I already made the 0V is 0V argument. So it isn't going to change response time.

I clearly stated for the example of the horsepower gain, I would accept the premise that it does. It was an argument against any potential HP gains because the two aren't related at all.

To be clear: Physics dictates that there will be no improvement on response time.

 

[eyeballs]

And now for a break from the physics arguments......

I found a 19" 6 gauge battery cable from autozone for $4.99 and decided to try that before doing the 5 wire full setup. Turns out its the perfect length to go from the upper throttle body bolt to the negative battery terminal, and it already has ring terminal ends on it. I was originally planning on running the ground to the body but the cable wasn't long enough, and I figured this should be just as good.

1. Remove snorkel. The intake side was a takes longer to remove since there's a clip-thing on the bottom as well as the top.
2. With a phillips screwdriver, loosen the two clamps holding on the rubber intake elbow and wiggle the throttle body end out of the way a bit.
3. Remove 10mm bolt from the top/rear of the throttle body. It sits adjacent to the clamp you loosened. Be careful breaking it loose as its fairly soft.
4. Slide one end of the battery cable onto the TB bolt and re-insert it into the TB. Other end goes on the bolt for the neg. battery post. I tightened the bolts down "snug" and certainly did not crank down on them.
5. Re-install rubber elbow and clamps (easier said then done), and then snorkel.
6. Test drive, make sure there's no CEL which might indicate an intake leak if you forgot to put the elbow on correctly.

On my short test drive down the street I didn't really notice anything but how annoying the throttle delay is. I'll check back after some more driving. Pics aren't great due to the cell phone camera.

snorkel was left off for both photos

 

[inspekt]

When this thread began, it seemed like what everyone was interested in was improving the daily driving feel, specifically in relation to what "feels" like (but may not precisely be) a delay in the throttle response. The quantification of the exact mechanical, electronic, electromagnetic and physics issues seem less important than simply answering via butt-dyno: Does grounding the throttle body make a difference you can feel when you drive the car? I myself am interested in the answer to this question.

 

[Phone]

Holy s***, it's like 0V is still 0V!

My brain is blown!!!!!

 

[Phone]

When this thread began, it seemed like what everyone was interested in was improving the daily driving feel, specifically in relation to what "feels" like (but may not precisely be) a delay in the throttle response. The quantification of the exact mechanical, electronic, electromagnetic and physics issues seem less important than simply answering via butt-dyno: Does grounding the throttle body make a difference you can feel when you drive the car? I myself am interested in the answer to this question.

Yeah man, the plural of anecdote is totally data.

 

[Mazdamatic]

when i installed my 2.5in straight pipe my car got loud. that made it faster.

only a dyno will settle things.

 

[Phone]

only a dyno... of the butt degree

 

[CorkSport]

I really don't expect to see anything different myself on the dyno but it is fun to try new things. There is probably no chance of us doing the test this week due to the shop being busy with the MS3 doing product testing.


-Derrick

 

[kcdirtbro54]

I never expected major gains but an extra ground could never hurt anything. I certainly would never drop coin for a grounding kit, but I do acquire extra wiring from time to time I could always use for something like this.

 

[Phone]

I was talking with Corksport, and there has been a verified gain. I will start selling kits next week when I come back from out-of-town.

 

[Mazdamatic]

I was talking with Corksport, and there has been a verified gain. I will start selling kits next week when I come back from out-of-town.

if the meat aint juicy i keep it on the grill.

"ill be selling kits next week of dollar items you can find at a hardware store"

ebay is the way to go..

 

[CorkSport]

I was talking with Corksport, and there has been a verified gain. I will start selling kits next week when I come back from out-of-town.

Lol

 

[Dynotronics1]

Lol

Well, what everyone seems to miss on this is the simple fact that the throttle body on the 2( like the 3 and 5) is
A stepper motor with PID feedback. It can move no faster or slower than the ecu commands it to.

Is a jumper to ground going to make a difference? Nope. Does it hurt anything? Nope

Long ago, we tried to duplicate the reported effective gain both on the dyno and with a scope. We could not make even a slight improvement to tp movement time even using 1/0 welding cable as the ground strap.

Changing the throttle map input/ output map in the ecu is really the only way to do this

But again, if it makes you feel faster, then no harm done

 

[eyeballs]

Good to know! Some of the feedback, especially from a mazda5 owner, was extremely positive so I had to give it a shot. After a few days of driving I feel a slight improvement but probably just because I know I changed something. What I need for things like this is a "mod fairy" to come and modify my car without me knowing it, then I can have an unbiased butt dyno.

 

[Phone]

Whoa whoa whoa, slow down... are you saying that grounding a throttle body has absolutely zero impact!? My butt dyno graph says otherwise.

I am shocked, sir.

 

[CorkSport]

Whoa whoa whoa, slow down... are you saying that grounding a throttle body has absolutely zero impact!? My butt dyno graph says otherwise.

I am shocked, sir.

I still see the gains in the pucker factor myself. The chart does not lie and the interwebs are always correct!