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jas
Dodge Dakota
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6/02/2002
23:59:14
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 Subject: F&B TB
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Has anyone out there with a 4.7 auto tried the F&B 70mm throttle body? I was just wondering if it would be a good modification for my truck. I was going to combine it with a Volant air intake kit. I'm kind of new to this and would appreciate any help. Thanks.
2000 4.7L CC no mods (yet).
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Clevite 77
Dodge Dakota
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6/03/2002
00:26:36
|  RE: F&B TB
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the only problem with the 70mm is that the idle is pretty high (I've read 1000-1200 rpms at idle) I'm going with the 71mm fastman tb. It uses an OE t-body that is board and polished and also it has a thinner butterfly. At $200 + core you can't beat it.
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jas
Dodge Dakota
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6/03/2002
10:40:55
| RE: F&B TB
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Is the fast idle permanent, or just until the PCM has had enough time to adjust to the new TB?
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rtdkota
Dodge Dakota
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6/03/2002
11:03:36
|  RE: F&B TB
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The fast idle will occur with any larger TB-- though it's been a floating issue that varys from truck to truck. The 4.7L PCM is slow to adjust to this--
We offer a 30 day return policy on the F&B TBs. The Volant air system (boxed) is probably the best out there-- or use your stock 'air hat box' with an open filter.
If you have more questions, give me a call (after 5 pm pst)
619-448-5016 I do the assembly work with Bruce.
Sam
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Clevite 77
Dodge Dakota
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6/03/2002
11:09:34
| RE: F&B TB
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I guess it learns it eventually but takes quite a while, from what I hear. I don't mean to try and sell you something else, but if the dealer sees the TB they could give you a hard time as far as warranty work (if that even applies to you)
the pros with F&B from what I hear:
More power
New piece
you can still keep your original
the cons
$400
voids some warranty stuff
erratic and high idle
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CThomp
Dodge Dakota
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6/03/2002
11:25:09
| RE: F&B TB
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I guess its been about 100 miles since I put my Fastman TB on. The pcm has pretty much learned. The but dyno tells me big improvements especially on the low end. Right now i'm playing with fuel economy. So far so good. With more low end I can shift sooner and not have to push rpms so high. It's hard not to haul ass though cause the power is definitely there.
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Clevite 77
Dodge Dakota
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6/03/2002
11:36:36
| RE: F&B TB
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Stop braggin about the power gains CThomp lol
The 15th is now going to take so much longer to get to here (i get paid 15th and 30th, getting paid salary sucks lol)
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rtdkota
Dodge Dakota
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6/03/2002
11:59:42
| RE: F&B TB
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Noting voided with the F&B... Plus you keep your stock unit (you can easily swap back). If a dealer checks out a 'ported' TB, that can throw a red flag just like anything else (if anything, it should only void the warranty for the TB, nothing else).
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jas
Dodge Dakota
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6/03/2002
15:45:11
| RE: F&B TB
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Would it be better if I also got an aftermarket PCM? (would it learn faster?). Do I have to reset my PCM when putting on a new TB or Intake kit? Thanks for the help.
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R.L.Stuart
Dodge Dakota
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6/03/2002
21:05:31
| RE: F&B TB
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Get the F&B 70mm you will love it,The idle issue has more to do with the PCM on the 4.7 than the TB,I had a bad idle with my stock 68mm TB that went away when i installed the 70.
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jas
Dodge Dakota
JOIN HERE
6/03/2002
21:22:55
| RE: F&B TB
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Are you still running your stock pcm? Did you lose much low end with the 70mm? Thanks.
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