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Is it time for a ported tb or not

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Old 02-24-2004, 03:12 PM
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Default Is it time for a ported tb or not

check sig....... Im about to add a set of A.R.E. stg 2 heads in about a month, im wondering if its about time to get a ported tb (i can get Jantzer ported tb from a friend for $70- thats why im wondering) But i also heard that ported tb's give "tuners" headaches, and that stock tb's are good on 9 and 10 sec cars


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Old 02-24-2004, 03:25 PM
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The aftermarket MAFs are what cause problems for tuners. Instead of reading incoming O2 accurately, they are actually lying to the PCM in order to lean out the mixture. Bigger displacement and FI engines need a bigger base throttle body platform because of the increased volumetric efficiency. Yeah the stock throttle body is fine for NA stock cube motors. However, these NA 346ci motors can use the increased intake and flow characteristics provided by a ported/polished stock tb. Plus you are def gonna want as much flow as possible so as not to choke the new heads.
Old 02-24-2004, 03:41 PM
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Originally Posted by BadAndy
The aftermarket MAFs are what cause problems for tuners. Instead of reading incoming O2 accurately, they are actually lying to the PCM in order to lean out the mixture. Bigger displacement and FI engines need a bigger base throttle body platform because of the increased volumetric efficiency. Yeah the stock throttle body is fine for NA stock cube motors. However, these NA 346ci motors can use the increased intake and flow characteristics provided by a ported/polished stock tb. Plus you are def gonna want as much flow as possible so as not to choke the new heads.

(this question sounds NooBish- but its not!)

So it's safe to say i SHOULD see some gains with the ported tb, when i put the heads on? (in other words with my set up would you spend $70 on a ported tb?)
Old 02-24-2004, 04:40 PM
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Yes and hell yes. Since you are using heads that have a greater flow, you will see even more gains than on stock heads.
Old 02-24-2004, 04:59 PM
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a ported tb is a must even on a stock car
Old 02-24-2004, 05:05 PM
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I noticed an increase when I went from the stock TB to a BBK 80 mm (not really worth the extra money over a ported unit) on a basic bolt on (not even headers) car.
Old 02-24-2004, 07:24 PM
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Port it yourself for $5 and be done with it. You can remove the material with a dremel, and fill the holes with aluminum epoxy. It is easy and fun!

Here is how mine came out:
http://www.tatommy.com/images/homeporttb.JPG

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Old 02-24-2004, 08:43 PM
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[QUOTE=TaTommyWS6]Port it yourself for $5 and be done with it. You can remove the material with a dremel, and fill the holes with aluminum epoxy. It is easy and fun!

QUOTE]


I cant........... i have this disease called LAZYitus...(plus i work 6 days a week)
Old 02-24-2004, 09:26 PM
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im about to pick up a ported TB this weekend.. i hear its good for 10rwhp on a stock cube engines. i figured i have more exuast going out, so i wanna get more flow going in. since i just installed my headers, it should be a nice piece and boost my HP a little
Old 02-24-2004, 10:09 PM
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Well I don't know about 10rwhp on a car without heads or at least a cam, but at the very least it will pick up some power and improve throttle response.
Old 02-25-2004, 07:43 AM
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"There's always room for pie"
Old 02-25-2004, 11:55 AM
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For as cheap as you are getting it, I beleive it is a no brainer. Especially on a H/C car. Every little bit helps.
Old 02-25-2004, 01:42 PM
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It's usually worth 7-10rwhp on a heads/cam car, and 3-5rwhp on a bolt on car.
Old 02-25-2004, 06:42 PM
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yea im all bolt on for now, i can see a cam in my future so im gunna just get it now. im also getting it for a great deal without a core




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