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Old 10-15-2013, 04:42 PM   #1
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throttle body

Am thinking about adding an throttle body and spacer any idea on how much more HP it would add
Also do I need to add headers for this upgrade? Thanks
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Old 10-15-2013, 06:34 PM   #2
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.5hp and no.
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Old 10-15-2013, 07:09 PM   #3
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.5hp and no.
That's kinda high, are you sure.....
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Old 10-15-2013, 08:41 PM   #4
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0.5 is a little high for a spacer - which is a better paper weight than it is a performance item. Think about it, moving the throttle body a half inch is going to accomplish???????

This isn't like a carburetor where moving the carburetor up changes the length of the runner. The fuel is injected in your car into the cylinder and not mixed with air at the carburetor.

You could add a foot of metal between the intake manifold and the throttle body and you won't notice any difference.
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Old 10-15-2013, 08:41 PM   #5
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I honestly think it adds nothing
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Old 10-15-2013, 10:15 PM   #6
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+1 ^
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Old 10-15-2013, 11:06 PM   #7
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What about a new throttle body itself? The one that's larger than the stock.
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Old 10-15-2013, 11:35 PM   #8
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I've been confused about this issue. is the part of the intake manifold that mates up with the throttle body the same diameter? because if it is, then upgrading the tb would cause air to flow from larger to smaller diameter which... logically would cause turbulence or flow restriction right?
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Old 10-15-2013, 11:44 PM   #9
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Use your money elsewhere. Unless you plan on porting the intake
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Old 10-16-2013, 12:43 AM   #10
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I felt a good difference from stock to 78mm on my 02 gt guess it's just different for different models. Less worth it if you dont plan on boosting.
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Old 10-16-2013, 08:00 AM   #11
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It's true I mean it does serve the purpose more like a paper weight I saw American muscle has a big to for about 400.00 but I was just thinking if it's would it when yo think about the HP gain as compared to the price. I have a 07 v6 automatic the only upgrade I got is a CAI any other recommendations on upgrad es
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Old 10-16-2013, 11:53 AM   #12
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Exhaust
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Old 10-16-2013, 11:55 AM   #13
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Exhaust I was thinking more of the mid pypes
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Old 10-16-2013, 12:04 PM   #14
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Yea you can hear headers, midpipe, axle backs
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Old 10-18-2013, 07:19 AM   #15
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Quote:
Originally Posted by JimC View Post
0.5 is a little high for a spacer - which is a better paper weight than it is a performance item. Think about it, moving the throttle body a half inch is going to accomplish??????? This isn't like a carburetor where moving the carburetor up changes the length of the runner. The fuel is injected in your car into the cylinder and not mixed with air at the carburetor. You could add a foot of metal between the intake manifold and the throttle body and you won't notice any difference.
That's direct injection. Our fuel is mixed in the intake port just before the intake valve....and I've got a spacer and the only things you'll notice are mainly a cool sound and a little more responsiveness from the throttle but not really any power
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Old 10-18-2013, 09:54 AM   #16
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Watch what tb and spacer you get if you do decide. Bigger tb with a stock sized spacer hurts proformance more than anything. For that kinda of mondley just spend a little more and do tge pypes midmuffler exaust. So much more worth it
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Old 10-18-2013, 09:57 AM   #17
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Watch what tb and spacer you get if you do decide. Bigger tb with a stock sized spacer hurts proformance more than anything. For that kinda of mondley just spend a little more and do tge pypes midmuffler exaust. So much more worth it
Completely!
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Old 10-18-2013, 05:09 PM   #18
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Idk about you guys but when I installed my 75mm tb and plenum I noticed that I had a lot better throttle response.

I don't think it adds hp though.

I bought them on my quest for full bolt ons yay!

---------- Post added at 03:09 PM ---------- Previous post was at 03:08 PM ----------

Btw I also got a tune for them also

I was under the impression my car would run like garbage without it
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