Do Throttle Body Spacers Work On Fuel Injected Engines

Posted in Air Intakes System | Asked on Apr 13, 2010

I am wondering if anyone can give me a definite answer to weather or not throttle body spacers adds horse power or not. I have a 98 dodge ram 5.2L fuel injected with a cold air intake and i keep getting conflicting answers if a throttle body spacer will add horse power. Some people say it will work great with a cold air intake and others say it can actually rob me of some horse power on a fuel injected engine.

There are 5 Answers for "Do Throttle Body Spacers Work On Fuel Injected Engines"

  1. Debbie Y says:

    YOU HAVE A HIGH RISE MANIFOLD BY ADDING A SPACER YOU ARE MAKING A STOCK MANIFOLD INTO A HIGH RISE NO MATER IF IT IS CARB OR FI IF IT IS THROTTLE BODY FI .SO YES IS THE ANSWER IT WILL ADD HP TORQUE AND MPG !

  2. Van Bo says:

    I wouldn’t buy a crappy one, that might not work. If it spins the intake air and creates a vortex, that should work, and give all those gains.

  3. Juanted says:

    No it wont only on carborated engines.

  4. dodge man says:

    it can rob you of low end horse power and fuel mileage because those work best sometimes at higher speeds than lower speeds,i had one on my 99 model truck and took it off an gave it away for the simple fact that it made it worse rather than better,some people get good gains from them but most don’t,depending on the condition of the engine it can hurt it more than it helps it,good luck.

  5. eferrell01 says:

    “The “Will They Work??? Or Won’t They” debate continues although numerous studies have shown that throttle body spacers have given significant gains in performance, horsepower, torque and fuel economy especially on vehicles using Throttle Body Injection or the standard four-barrel carburetor.”
    Note the qualifier:”especially on vehicles using Throttle Body Injection or the standard four-barrel carburetor”
    Modern MPI systems are optimized for best performance already, so additions would not help, but maybe hurt performance. Also, with a TBS, you can’t put on a cold air induction system without modifying the hood for clearance.

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