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Discussion Starter · #1 ·
I keep hearing talk about a wider throttle body.
Can anyone tell me the easiest way to do this. Do you get one from the junk yard and install it or do you buy a kit? I heard it will improve HP, how much? how about the cost? Thank You.

Sue
 

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Discussion Starter · #2 ·
> I keep hearing talk about a wider throttle
> body.
> Can anyone tell me the easiest way to do
> this. Do you get one from the junk yard and
> install it or do you buy a kit? I heard it
> will improve HP, how much? how about the
> cost? Thank You.

> Sue
 

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Discussion Starter · #3 ·
Waste of money

> The wider TB are waste of money because of the
stock air flow meter. It does not matter if
you have a Ram air K&N filter and a wider TB
because in the middle is the air flow meter.
It cause a bottle neck. The air flow meter is 50
cm,the stock TB is 50 cm,the wider TB are 60 cm
and the ram air K&N are about 76 cm wide.
Take off the black rubber duct that attaches to
the stock air box from the side headlight. The
opening of the duct was about 40 cm wide. It was
10 cm smaller then the air flow meter,and it has
the same effect as an ram air k&N filter and its free. The only way to benfit from a ram air and
wider TB is to buy a fuel injection management
system that gets rid of the air flow meter and have a 60 cm pipe to the Ram air and TB with a air mass sensor in it.You will have to bore the
intake the same size as the TB. I heard that
the turbo air flow meter and TB are wider but
make it run rich. I'm not a expert just my options.

I keep hearing talk about a wider throttle
> body.
> Can anyone tell me the easiest way to do
> this. Do you get one from the junk yard and
> install it or do you buy a kit? I heard it
> will improve HP, how much? how about the
> cost? Thank You.

> Sue
 

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Registered
Joined
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107,597 Posts
Discussion Starter · #4 ·
Re: Big Throat TB and Turbo AFM

> stock air flow meter. It does not matter if
> you have a Ram air K&N filter and a wider TB
> because in the middle is the air flow meter.
> It cause a bottle neck. The air flow meter
> is 50
> cm,the stock TB is 50 cm,the wider TB are 60
> cm
> and the ram air K&N are about 76 cm wide.
> Take off the black rubber duct that attaches
> to
> the stock air box from the side headlight.
> The
> opening of the duct was about 40 cm wide. It
> was
> 10 cm smaller then the air flow meter,and it
> has
> the same effect as an ram air k&N filter and
> its free. The only way to benfit from a ram
> air and
> wider TB is to buy a fuel injection
> management
> system that gets rid of the air flow meter
> and have a 60 cm pipe to the Ram air and TB
> with a air mass sensor in it.You will have
> to bore the
> intake the same size as the TB. I heard that
> the turbo air flow meter and TB are wider
> but
> make it run rich. I'm not a expert just my
> options.

> I keep hearing talk about a wider throttle

I think that in isolation, that is without any other modification the TB is only a slight improvement. It at least sounds better. And while it is true that the AFM provides the restriction that would seem to negate any benefit it is also true that using the Turbo AFM which is 15% bigger than the stock NA AFM will take care of that. The AFM is a potentiometer that reads flap position to determine how much air is getting to the engine. It only reads flap position not actual air mass like the air mass sensors. Therefore, using the Turbo AFM will not make the car run richer, but conversely because it provides more air for a given flap position it will make the car run leaner. A caveat though, this is not a straight bolt in. I have instructions on how to do it on my web site, PlanetZ. Not complete hold your hand and help you with your mistakes mind you, but if you are fairly mechanical you should be able to get through it. E-mail me if you would like directions to PlanetZ.
 
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