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  #13  
Old 02-15-2011, 11:21 AM
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Re: cold air intake

4" BWoody on my 08 Hemi

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Old 02-15-2011, 04:57 PM
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Re: cold air intake

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Originally Posted by lll2for3lll View Post
I'd buy a Fastman TB before I buy a CAI.

Edit: And did I mention that the Fastman TB will save gas. You'll save gas by actually using less power. And it's cheaper than a CAI.
I'm being honest, but explain what a Fastman TB does. I truly don't know. Also how much gains do you get out of it? Is it worth it? I assume it voids engine warranty etc etc.

Fill me in, or someone
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Old 02-15-2011, 07:17 PM
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Re: cold air intake

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Originally Posted by White Chocolate View Post
I'm being honest, but explain what a Fastman TB does. I truly don't know. Also how much gains do you get out of it? Is it worth it? I assume it voids engine warranty etc etc.

Fill me in, or someone
It's a replacement throttle body that eliminates all of the gas restrictions that the OEM throttle body has. It's kinda like an aftermarket exhaust. It gives better gas flow to the engine.

I called and talked to Dan Fastman himself. He said that you would think it kills gas milage but it doesn't. It increases it because you use less power. For about $250 to $300, better than any cold air intake. I'd do the Fastman first and then the CAI.

I don't know exactly all the exact benefits we would get with our WK's but I do understand the what a throttle body does.

I hope somebody that has on will respond.
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Old 02-15-2011, 08:36 PM
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Re: cold air intake

I have it installed on my wk 08 4.7 and the result was less hesitation/better throttle response and less downshifting (or use of tow/haul) on the hills. No change in mileage better or worse (maybe a 0.2mpg improvement).
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Old 02-15-2011, 08:51 PM
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Re: cold air intake

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Originally Posted by melibokus View Post
I have it installed on my wk 08 4.7 and the result was less hesitation/better throttle response and less downshifting (or use of tow/haul) on the hills. No change in mileage better or worse (maybe a 0.2mpg improvement).
Any major gains in horsepower or torque?
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Old 02-15-2011, 09:59 PM
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Re: cold air intake

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Originally Posted by lll2for3lll View Post
Why don't you and your "white chocolate" go to another thread. Lol. J/K. In my opinion and experience with a Subaru STI, I wouldn't do an intake alone.
big difference.. the reason for the STI intake, is that its a turbo car and messes up the air fuel ratio.

Its been discussed here to no end. The intake will show performance gains for a while, as more air will lean out the mixture

After the ecu learns its there, it will richen it up a bit.

So many companies steak claims saying that youll gain xx horsepower doing this compared to xx from this other company, really you cant go too wrong. If i did it over again, id go with a bwoody because its a true cold air intake, unlike the short rams

Air intake was my first mod on the jeep too. Thats where it all started

expect an hour or two if you have never done it. But its a learning experience and pretty much any intake will come with instructions
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Old 02-16-2011, 09:12 AM
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Re: cold air intake

<Any major gains in horsepower or torque>

I haven't spent the cash to get it dyno'd but it's clear that eliminating or reducing downshifting on climbs after installation of the TB has made a big difference - and that continues after 8K miles. I will add a CAI to it but will hang on for Bwoody a while longer, I expect the CAI to be less restrictive and allow the larger TB to perform even better. I can't see how this would cause any warranty problems except on the TB itself. It's the same physical TB model but has been bored to a larger diameter (74mm), tapered further at the edge (77mm) and any restrictions removed/reduced. It's a 10min easy job to install.
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Old 02-16-2011, 09:20 AM
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Arrow Re: cold air intake

Quote:
Originally Posted by melibokus View Post
<Any major gains in horsepower or torque>

I haven't spent the cash to get it dyno'd but it's clear that eliminating or reducing downshifting on climbs after installation of the TB has made a big difference - and that continues after 8K miles. I will add a CAI to it but will hang on for Bwoody a while longer, I expect the CAI to be less restrictive and allow the larger TB to perform even better.
Yep, I'd definitely do a Fastman TB before a CAI. But I'd definitely do both and not just a CAI alone.
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Old 02-16-2011, 09:21 AM
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Re: cold air intake

Quote:
Originally Posted by lll2for3lll View Post
It's a replacement throttle body that eliminates all of the gas restrictions that the OEM throttle body has. It's kinda like an aftermarket exhaust. It gives better gas flow to the engine.

I called and talked to Dan Fastman himself. He said that you would think it kills gas milage but it doesn't. It increases it because you use less power. For about $250 to $300, better than any cold air intake. I'd do the Fastman first and then the CAI.

I don't know exactly all the exact benefits we would get with our WK's but I do understand the what a throttle body does.

I hope somebody that has on will respond.
i'm pretty sure the throttle body deals with the air going into the engine, not the gas, a ported throttle body allows more air to be sucked into the engine, and if the blade of the TB is sharpened, it allows the air to get in easier, it has nothing to do with gas restrictions, just air restrictions
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  #22  
Old 02-16-2011, 09:23 AM
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Re: cold air intake

Quote:
Originally Posted by GR33N D3M0N View Post
i'm pretty sure the throttle body deals with the air going into the engine, not the gas, a ported throttle body allows more air to be sucked into the engine, and if the blade of the TB is sharpened, it allows the air to get in easier, it has nothing to do with gas restrictions, just air restrictions
That's what I meant. Sorry.
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Old 02-16-2011, 09:29 AM
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Re: cold air intake

oh ok, just had to make sure...i want one, because im sure with a CAI it makes a huge difference, but FWIW, a powerwire wont do much
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Old 02-16-2011, 10:28 AM
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Re: cold air intake

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Originally Posted by White Chocolate View Post
I'm being honest, but explain what a Fastman TB does. I truly don't know. Also how much gains do you get out of it? Is it worth it? I assume it voids engine warranty etc etc.

Fill me in, or someone
Look up the Magnuson-Moss act. If something fails, its up to the dealership to prove that the aftermarket part you put on your truck caused the failure.
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