Throttle Body Spacers?
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Senior User
Joined: Nov 2006
Posts: 294
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From: Northern New Mexico
Throttle Body Spacers?
Anyone have an opinion as to the value of the aftermarket throttle body spacers for the 5.4 liter engine? I am guessing this would only be useful if an aftermarket air induction system is also added to improve air flow and, in a perfect world, a pair of headers.
OR, is this all just hype?
OR, is this all just hype?
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Joined: Feb 2005
Posts: 1,344
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From: NYC
From what I heard they are not a good upgrade. From many accounts on this site, TB spacers do not provide any gains and do not add MPG. I decided to stay away even after installing a CAI(which did not provide any increases either).
IMHO, you would probably be better off doing a tune up if you haven't done so already. Spending the money on some coil boots + spark plugs and perhaps cleaning out your throttle body/fuel system will cost about the same(if you do the work yourself) and i am sure that you will notice a change. How many miles on your truck?
IMHO, you would probably be better off doing a tune up if you haven't done so already. Spending the money on some coil boots + spark plugs and perhaps cleaning out your throttle body/fuel system will cost about the same(if you do the work yourself) and i am sure that you will notice a change. How many miles on your truck?
Senior User
Joined: May 2003
Posts: 329
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From: Wichita, Kansas
They are junk. I installed an Airaid TBS (along with a K&N FIPK) and all it got me was a nice high-pitched whistle and no real performance gain. Even the FIPK didn't produce any real performance gain. I slapped back on all of the stock intake stuff and put on a Flowmaster exhaust system so at least I sound mean.
The only way to really get an Expy to perform better is a Supercharger but who wants plop down $2K for that? Not me.
I will enjoy what I have and keep it as nice as possible for as long as possible.
The only way to really get an Expy to perform better is a Supercharger but who wants plop down $2K for that? Not me.
I will enjoy what I have and keep it as nice as possible for as long as possible.
Senior User
Joined: May 2004
Posts: 252
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From: Denton, TX
I've had one in mine for about 4 years now and the only difference I notice is the whistling sound. That's about it.
Only paid 20 bucks for it locally, though, so no biggie.
Only paid 20 bucks for it locally, though, so no biggie.
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Senior User
Joined: Nov 2006
Posts: 294
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From: Northern New Mexico
Thanks for the warning. I had a feeling it made no great sense. Forgot to add that I drive between 7,800 and 11,300 feet. A supercharger would be a great addition.
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