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Old 12-24-2015, 03:50 AM   #1
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BBK Throttle Body

I was looking to upgrade my throttle body and didn't know which one I should get. I hear mixed thoughts on both 85mm and 90mm BBK. I don't plan on going force induction soon. I would like you guys thoughts on which one is better. If you have either one of these what are the pros and cons. Thanks. Info is greatly appreciated.
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Old 12-24-2015, 11:32 AM   #2
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Most will tell you they are a waste of money and if your going to stay N/A then go with the 85mm. I wanted to get one but after researching some guys only gain 1-3 HP. I guess if money isn't an issue then grab one and gain your 3HP and call it a day. After all 3 is better then 0.
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Old 12-24-2015, 03:22 PM   #3
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What if someone had a blower than is it worth it?


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Old 12-24-2015, 04:41 PM   #4
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With a blower the 90mm will be the way to go. Im not sure as to the increase in HP it will give when a blower is added. Do a search and see what you find. I searched on this topic when I wanted just the 85mm T body and most of the advice was to not buy one. Its kinda like buying a CAI for these cars, There is little gain for the money. But like said little gain is better then no gain and if money isn't an issue then buy it.
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Old 12-24-2015, 05:30 PM   #5
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How about change in throttle response? Did you guys see any improvement with an aftermarket throttle body.

I've got boss manifold and long tubes, I'm really considering a 90mm throttle body.


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Old 12-24-2015, 06:59 PM   #6
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Old 12-24-2015, 11:45 PM   #7
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I got a Vmp supercharger and they go with at 130mm tb

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Old 12-24-2015, 11:55 PM   #8
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A lot of research needs to be done. And a lot of F up assumptions in here also.


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---------- Post added at 11:55 PM ---------- Previous post was at 11:54 PM ----------

Quote:
Originally Posted by ILLY View Post
How about change in throttle response? Did you guys see any improvement with an aftermarket throttle body.

I've got boss manifold and long tubes, I'm really considering a 90mm throttle body.


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Why a 90mm


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Old 12-25-2015, 11:02 AM   #9
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Buy it, Dyno and hit the track and let us all know how it does. I think it will help. 5HP is 5HP you didn't have before the install so JUST DO IT! 85mm
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Old 12-25-2015, 01:13 PM   #10
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A 90mm throttle body is useless when the inlet opening of the intake manifold is less then 90mm. I believe the boss intake manifold inlet opening is around 85mm. so even if you try to put on a bigger TB, the intake manifold is only going to accept whatever amount of air 85mm is going to allow, think of it as kind of a choke point.
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Old 12-25-2015, 02:58 PM   #11
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How about porting the intake

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Old 12-25-2015, 03:27 PM   #12
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Originally Posted by chefron50 View Post
How about porting the intake

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That's what needs to be done to run the 90mm. Out of all the throttle body's the only one that has shown gains is the acufab


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Old 12-25-2015, 06:33 PM   #13
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Running a different throttle body would require a retune to get the most out of it. What you'll get will probably not be much, if anything at all *WITHOUT* a power adder. On a mostly stock N/A setup its pointless. This is because as others have mentioned the inefficiencies in the intake and exhaust systems will restrict airflow to a greater degree than the throttle body. So the best thing would be to improve those systems instead of the throttle body. Unless you go with a supercharger or somthing of the sort. Then you will want to improve airflow all around as you will see better/ more gains there than if you were N/A
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Old 12-26-2015, 12:08 PM   #14
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Originally Posted by Rapinator126 View Post
A lot of research needs to be done. And a lot of F up assumptions in here also.


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---------- Post added at 11:55 PM ---------- Previous post was at 11:54 PM ----------




Why a 90mm


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Because I don't know if a 85 mm would be a noticeable improvement over the stock 80 mm.


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Old 12-26-2015, 12:14 PM   #15
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Because I don't know if a 85 mm would be a noticeable improvement over the stock 80 mm.


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Well a 90mm is 100% pointless unless you have a boss manifold with a lot of porting and cleanup done to it.
Research a lot of it.


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Old 12-26-2015, 01:26 PM   #16
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Quote:
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Well a 90mm is 100% pointless unless you have a boss manifold with a lot of porting and cleanup done to it.
Research a lot of it.


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I do have a boss manifold, just not ported. Also have long tubes with off road x pipe. Still trying to figure out if I will benefit from it with my setup. I want a better throttle response more than hp.


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Old 12-26-2015, 01:29 PM   #17
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BBK Throttle Body

Quote:
Originally Posted by ILLY View Post
I do have a boss manifold, just not ported. Also have long tubes with off road x pipe. Still trying to figure out if I will benefit from it with my setup. I want a better throttle response more than hp.


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Won't do anything for your. Your car wont benefit from it, unless you have a legit NA build. Spend the money elsewhere.


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Old 12-26-2015, 02:22 PM   #18
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I know everyone will disagree but I put on the 85mm and I agree it's probably not worth the money but the car runs so much better with it, a lot better throttle response and smoother accelerating, I'm not so worried about the hp gain as I was the overall better feel of the car, and you will notice it the minute you start your car, a lot of people on here comment on mods that they don't have...
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Old 12-26-2015, 02:35 PM   #19
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^ lol at the people who get the "it works" mindset after a useless mod.


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Old 12-26-2015, 02:38 PM   #20
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Say what you will
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Old 12-26-2015, 02:39 PM   #21
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Say what you will

Only mod and build these cars for people on the daily. As well as mine. I will put anything on someone's car if they pay for it.


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Old 12-26-2015, 04:07 PM   #22
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So I can bring my car down for a Cummins swap?

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Old 12-26-2015, 04:33 PM   #23
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So I can bring my car down for a Cummins swap?

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I'll do it. Let's do a 12v swap though.


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Old 12-26-2015, 04:39 PM   #24
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BBK Throttle Body

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Old 12-26-2015, 08:07 PM   #25
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Won't do anything for your. Your car wont benefit from it, unless you have a legit NA build. Spend the money elsewhere.


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This is it. The above has been repeated a few times in this thread. If you really want to get a larger throttle body OP, fine then do it. It does not change the fact that it will do nothing for your current setup. You can spend your money and do what you want. I would re-iterate that it is a waste of money, and it will cost you more time and money to get the same, or close to OEM drivability. Because you are not going to have access to all the data that would need to be entered into SCT/HP/ your tuner of choice. So to recap, spend money on a TB (on your current setup which is mostly stock) is a complete waste when evaluated for performance. It becomes neutral, or even negligible after lots of tuning when evaluated for performance. Net, you are out money for the TB + time AND money for tuning the car for basically factory drivability.
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Old 12-28-2015, 11:18 AM   #26
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Let me do it >>>>> When a manufacturer states that a part gives 10-15HP its very misleading for the consumer. Im guilty of buying into the hype myself. But even more misleading is forums like this at times. For example some will say they gained power and ET and some will say it did nothing. The manufacturer fails to explain how they get the power from there parts most of the time. Im sure with this BBK TB the test car had supporting mods and then a retune for he TB and that's how they got a gain. So installing it and doing nothing else, more then likely will give nothing. Then we have the placebo effect aka "butt dyno" where people think the car gained but have zero proff, where there car idle raised by 100rpm and they says it runs smoother. We need more well written write ups with installs and dyno numbers or ET's before and after. But we don't we have word of mouth. SO......... if you can find a TB for cheap then buy it and set it aside until you get some other mods and then toss it on but IMO its a lot of money for 5HP. Ive been in the market for one but cant find it cheap enough.
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