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ported throttle body/help

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Old Sep 29, 2008 | 10:52 PM
  #21  
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rel3rd is right it does feel as if i have better throttle response. The polishing smooths out the rough texture that the aluminum has inside the throttle body bore. Plus it looks sweet when your done lol
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Old Sep 30, 2008 | 10:33 PM
  #22  
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Originally Posted by l_kusler
Why not just buy the 90mm intake, tb and conversion harness if its that important? What does BBK Charge for a couple more mm? $370?
Good point i was thinking mine was a 75mm but your right its 78mm.. i guess its really not that bigga difference, ive been 11.1's on the stock one.
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Old Oct 1, 2008 | 01:10 PM
  #23  
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Originally Posted by 05RST2NV
Good point i was thinking mine was a 75mm but your right its 78mm.. i guess its really not that bigga difference, ive been 11.1's on the stock one.
I always thought big, bad throttle bodies were somewhat over-rated anyway.

With one of my other vehicles, I've been 10.24@133 (10.53@128 in vid) with a teeny-weeny 65mm throttle body and a smallish (for 500+rwhp) 80mm maf meter.

I think the LS style intakes are much more of a problem than the throttle bodies...

http://www.youtube.com/watch?v=TcJi1kn3Shg
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Old Oct 1, 2008 | 01:48 PM
  #24  
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Originally Posted by rel3rd
I always thought big, bad throttle bodies were somewhat over-rated anyway.

With one of my other vehicles, I've been 10.24@133 (10.53@128 in vid) with a teeny-weeny 65mm throttle body and a smallish (for 500+rwhp) 80mm maf meter.

I think the LS style intakes are much more of a problem than the throttle bodies...

http://www.youtube.com/watch?v=TcJi1kn3Shg
Did you try a larger TB and MAF in that Stang?

Are there any differences in porting a cable driven T vs a DBW TB?
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Old Oct 1, 2008 | 02:12 PM
  #25  
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Originally Posted by AdioSS
Did you try a larger TB and MAF in that Stang?

Are there any differences in porting a cable driven T vs a DBW TB?
80mm maf is about the biggest there is/was when I had that car.
I did try 65, 70 and finally a 75mm throttle bodies in the 6+ years I had that car. No difference in ET, MPH or Dyno numbers, but I did actually lose some noticeable (when locked in OD at cruise speeds) low end with the 75 on there...

Same issue on another Ford I owned, after that one. Everyone always seemed to be of the opinion that you couldn't over intake or over throttle body an engine, but my last Mustang (before I returned to my GM roots ) lost noticeable bottom end torque as well. From 4000 rpm launch it wasn't noticeable though.

http://www.fquick.com/images/vehicle...jpg?1204479450

As you can see in the linked specs above, I had 65mm TB and 73mm MAF and shortly after ran 75mm TB, 80mm MAF and a much better flowing intake...The car gained nothing, but lost low end torque big time. It's almost like it's the complete opposite of the LS based vehicles. I keep reading that nobody claims to lose any low end with the big 90/92mm TB's and matching intake, but that isn't the case on any car I've ever owned up to this point...and there's been MANY.
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Old Oct 1, 2008 | 02:55 PM
  #26  
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Originally Posted by budhayes3
14% sounds about right for TPS voltage at idle, I've never seen a TPS at 0%

Im a dummy... i was talkin about my truck and my buddys TA... Cable TB....
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