jefff929
Pacific wonderland, wet side
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SCOMP225 wrote:How do you drop a Throttle Body Spacer down the intake manifold ? most folks know them as washersib516 wrote:I think he meant a bolt spacer - a hollow tube of sorts. flat hollow tube 
2001 Dodge 2500 QC, Diesel, Auto, 4x4 Shortbox, Stull running boards, 24.5' Prowler 5er
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Retired JSO
Florida
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Car companies pay hundreds of engineers to design and build the most powerful power plants that can get the most mileage all the while meeting the federal emission standards possible. To say they are the best yada, yada, yada.
You can't tell me some off the wall K&N, chip manufacturer, snake oil salesman can design something that does better and I promise, it won't void your warranty. Yea, right.
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Turtle n Peeps
California
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Quote:Like everyone else out there, I'm looking to eek out the most MPG on my TV. I have heard about throttle body spacers and figured I'd go here first to see if anyone has any experience with them?
MPG, no.
A hair more power? Depends.
Like Marty said, it will move the power band up somewhat. Kind of like the tunnel rams did in the old days.
Worth it? Not IMHO.
~ Too many freaks & not enough circuses ~
"Life is not tried ~ it is merely survived ~ if you're standing
outside the fire"
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david_42
Oregon
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The average modern engine cost over 100 Million dollars to develop. MB tilts their hood ornament back to improve mileage. The rain gutters were removed from all designs to improve drag. Do you really think a $2 chunk of metal would not be used if it worked?
There was tremendous room for improvement back in the 50s and 60s, but not today.
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SCOMP225
Brownsburg,Indiana
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There are many aftermarket Parts available to improve Performance and Mileage on all types of vehicles. I've installed Headers/Adjustable Transmission Modulators and 1 inch carb spacers as well as aftermarket coolers on my first MH and all added to the Performance and Mileage. The performance industries core is the re-design of OE parts to improve Performance. I personally have never used a TBI Spacer nor do I know of anyone who has, I do know after a search there are several reputable manufactures that market these spacers and most are guaranteed to perform or they may be returned. If I were interested in such a spacer I Would request to see Dyno test that confirms the before and after results on installing a spacer. Today with fuel prices being unpredictable as they are we or most of us look at anything that improves milage and or performance of our vehicles.
Chuck
1992 American Eagle
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mowermech
Billings, MT
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Learjet wrote:YZCHARLIE wrote:Like everyone else out there, I'm looking to eek out the most MPG on my TV. I have heard about throttle body spacers and figured I'd go here first to see if anyone has any experience with them?
IF they worked, why wouldn't the automaker put them on the engine?
Nuf said !
That is probably the silliest statement I have ever read in regards to aftermarket parts, and it almost always crops up.
The Mallory Company made a good living selling electronic ignition kits to replace the points and condenser on vehicles because the manufacturers didn't install it.
Several companies make good money selling (CARB certified) headers because the auto manufacturers won't install them.
Disc brakes were very common in Europe (and other countries around the world) long before American auto makers started installing them.
Same for radial tires.
Hydraulic brakes were common in the United States for a couple years before Ford finally installed them.
Chevrolet and Buick had overhead valve engines long before Ford or Pontiac started building them.
Many of us advanced the timing on our Ford and Chevy engines by 2 to 6 degrees to get better performance and fuel economy, but the manufacturer never changed the specifications (back then emissions were not an issue).
There are many other examples of the manufacturers reluctance to embrace new technology or better ways to do things.
Sorry, that excuse just does NOT work!
CM1, USN (RET)
'94 Dodge 3500 4X2 CTD, 5 speed, 4.10 LS diff., Jacobs Rambrake, 274,000 Miles
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'95 Tioga 29H Ford-based Class C
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PopsRacer
Okc, Ok
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Definitely MYTH but some make a nice whisteling sound so some people might wonder if it's a mini-turbo..... until you punch it. 
The only way to improve performance on the intake is to increase flow. That can be done by changing to a larger diameter at your bottleneck areas (usually the TBI itself) or by adding on forced induction. Sometimes adding alot of an increase can require upgrading to high performance fuel injectors. You can "spiral" the air all you want but it won't let anymore in than is already flowing in.
I've been told that they were originally created for carbeurated intakes because some old intake plenums kinda had some strong angles to cram it all in under a tight hood. Supposedly the TBS was supposed to arrange the airflow so it'd travel through the strong angles with less resistance. I was told they worked fairly well back then to make them a decent bang for the buck.
If you want the proclaimed performance increase that the TBS claims to provide, swapping the throttle body out for a larger one is one way to get the results. I think the catch is that it won't help your MPG. From my experience, increasing airflow usually hurts MPG unless some emissions are illegally removed like on race track only vehicles.
2005 6" Lifted Nissan Armada LE (Offroad Beast)
2007 Jayco Jay Flight 29BHS
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mowermech
Billings, MT
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PopsRacer wrote:Definitely MYTH but some make a nice whisteling sound so some people might wonder if it's a mini-turbo..... until you punch it.
The only way to improve performance on the intake is to increase flow. That can be done by changing to a larger diameter at your bottleneck areas (usually the TBI itself) or by adding on forced induction. Sometimes adding alot of an increase can require upgrading to high performance fuel injectors. You can "spiral" the air all you want but it won't let anymore in than is already flowing in.
I've been told that they were originally created for carbeurated intakes because some old intake plenums kinda had some strong angles to cram it all in under a tight hood. Supposedly the TBS was supposed to arrange the airflow so it'd travel through the strong angles with less resistance. I was told they worked fairly well back then to make them a decent bang for the buck.
If you want the proclaimed performance increase that the TBS claims to provide, swapping the throttle body out for a larger one is one way to get the results. I think the catch is that it won't help your MPG. From my experience, increasing airflow usually hurts MPG unless some emissions are illegally removed like on race track only vehicles.
I do believe you are thinking about the old spacers with the little fans in the bores. The fans supposedly helped vaporize the fuel droplets from the carburetor jets. The Throttle Body Spacers made today don't have the little fans in them. At least the ones I have seen for the Jeep 4.0 engine don't. I looked at the ones for the Jeep, and the larger throttle body to go with it, but the benefit didn't seem to be worth the cost, IMO.
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PopsRacer
Okc, Ok
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mowermech wrote:I do believe you are thinking about the old spacers with the little fans in the bores. The fans supposedly helped vaporize the fuel droplets from the carburetor jets. The Throttle Body Spacers made today don't have the little fans in them. At least the ones I have seen for the Jeep 4.0 engine don't. I looked at the ones for the Jeep, and the larger throttle body to go with it, but the benefit didn't seem to be worth the cost, IMO.
I don't know about the old ones because it was an old mechanic who was telling me about them.
It's the new ones like this one that I believe are a myth. They sound kinda cool but I haven't seen any gains from one yet.
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SCOMP225
Brownsburg,Indiana
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That I believe is a multi port injection not a Throttle body Injection.
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