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Old 10-03-2012, 12:38 PM   #1
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Throttle body

I want to upgrade my throttle body on my mustang gt. it has cold air intake and flow master exaust. When changing the throttle body is their anything else i should put with it because someone suggested i should put a throttle body spacer and change the sensor. Any sugestions?
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Old 10-03-2012, 12:46 PM   #2
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70mm Throttle Body

End of Discussion and No Spacer
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Old 10-03-2012, 01:48 PM   #3
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Originally Posted by Slow2V
70mm Throttle Body

End of Discussion and No Spacer
+1 Anything bigger will make you lose a little power. As far as the spacer you will have different opinions some say they work some say they don't. I can't see spending $100 on a inch of aluminum, if it does work it won't even be a noticeable gain.
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Old 10-03-2012, 03:14 PM   #4
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Spend the extra 250 and get a polished Accufab plenum throttle body combo
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Old 10-04-2012, 07:27 PM   #5
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Did bbk, bolted right in no extras required.
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Old 10-04-2012, 10:54 PM   #6
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Originally Posted by WheelStander
Did bbk, bolted right in no extras required.
Did u feel the difference?
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Old 10-04-2012, 11:23 PM   #7
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Originally Posted by Justincalero

Did u feel the difference?
I have the 70mm throttle body and plenum I notice better throttle response, goes great with a cold air intake.
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Old 10-04-2012, 11:44 PM   #8
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i had a tb spacer in my mustang and i took it off after a few weeks,i got no power increase wat so ever
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Old 10-05-2012, 12:13 AM   #9
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i had a tb spacer in my mustang and i took it off after a few weeks,i got no power increase wat so ever
I shall take that off my list then lol
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Old 10-05-2012, 02:35 AM   #10
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The difference is night and day.

Huge improvement in performance and throttle response.
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Old 10-05-2012, 10:16 AM   #11
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The difference is night and day.

Huge improvement in performance and throttle response.
Do you need to have an exhaust mod before you see any improvements? Seems like you would have to get the additional air going in, out as well. Plus, will you need a tune for this mod?
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Old 10-05-2012, 10:48 AM   #12
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I have tune cai cat del Magnaflo exhaust.
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Old 10-05-2012, 10:55 AM   #13
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Tune not required on new edge stangs and sn 95's (94-04), however you would see better gains if you plugged it in to your computer.
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Old 10-05-2012, 11:07 AM   #14
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I have tune cai cat del Magnaflo exhaust.
Yeah, I think ^that is where you would see a gain. I'm not so sure it's worth the money unless you have an O/R or high flo cat midpipe, cat back setup, and a tune.

Also, now you have more air going in. Do you need more fuel so the air/fuel mix is correct? Maybe this is where the tune comes into play.
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Old 10-05-2012, 11:16 AM   #15
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The air flow with the addition of a TB/Plenum is increased slightly just like how a CAI does, however if you are to change your MAF sensor to say a lightning 90mm MAF up from the stock 80mm MAF your car would require a tune because the MAF is directly connected with the ECU.
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Old 10-05-2012, 11:22 AM   #16
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Originally Posted by runvsofthisbull View Post
The air flow with the addition of a TB/Plenum is increased slightly just like how a CAI does, however if you are to change your MAF sensor to say a lightning 90mm MAF up from the stock 80mm MAF your car would require a tune because the MAF is directly connected with the ECU.
So the 70mm TB is most likely within the airflow spec of the stock MAF and that's why there is no need for a tune? But, it would also benefit from the tune as well, just not required?
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Old 10-05-2012, 11:28 AM   #17
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So the 70mm TB is most likely within the airflow spec of the stock MAF and that's why there is no need for a tune? But, it would also benefit from the tune as well, just not required?
Yes. Your gains would be minimal with a tune without an upgraded MAF, but hey, they are gains and I would do it, but I would consider a larger MAF and TB/Plenum & MAF to complete the intake side of things.
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Old 10-05-2012, 11:34 AM   #18
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Originally Posted by runvsofthisbull View Post
Yes. Your gains would be minimal with a tune without an upgraded MAF, but hey, they are gains and I would do it, but I would consider a larger MAF and TB/Plenum & MAF to complete the intake side of things.
Cool, good info, thanks!
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Old 10-05-2012, 12:25 PM   #19
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I bought the spacer and never put it on cause it needs to be ported to flow with my Accufab Plenum throttle body combo. If I put it on before I port it, it would probably hurt flow sense the hole in the spacer is smaller
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Old 10-05-2012, 01:40 PM   #20
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I got the 78mm tb/plen combo and noticed a huge difference...my other mods are Mac cat back/pro chamber mid, 93 tune, Bbk cai. More of a gain over 3k rpm but it is extremely noticeable. Was thinking of selling my car a while ago and a guy who came to test drive it said it had more power and torque than any other mustang he had test driven
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