Factors influencing size are; Power output, RPM, cylinder head design, cylinder capacity, position of the throttle body in the inlet tract and position of the injector. A smaller bore leads to better throttle control and response (never underestimate) and improved fuel mixing. The system should be considered in total - from (at least) trumpet flange to cylinder and proportioned accordingly.

Twin bodies are the most straightforward solution for tuning production engines, Direct-to-head where available, or via a suitable manifold. Direct-to-head-bodies represent the simplest and neatest solution. They are harder to match to the inlet ports if this is required for the engine in question, but have the advantage of being angled for best results, unlike a carburettor manifold. Single bodies represent the no-compromise solution. See similar questions...

Yes, the LS1 has a different cam, which makes the car have a bit of lope at idle. People have reported that replacing the factory spark plugs with better ones like NGK TR55s and wires smoothened out the idle a bit. See similar questions...

A small amount of coolant is passing through the small hoses connecting to the throttle body. The main reason is so that during the winter months, the higher temperature of the coolant will keep the throttle body warmer thereby preventing icing. That's where the problem lies during the other months. By warming up the throttle body, you're warming up all of the air passing into the engine and thus losing some power (since cooler, denser air makes more power). See similar questions...

A Throttle Body Spacer is an add on to your air/fuel intake area. Originally used in the days of vehicles with carburetors, a throttle body spacer would allow additional fuel/air mix to be present to allow for additional power, or was used to "disturb" the air in such a way so that the fuel would form smaller droplets. See similar questions...

That also is a custom setup per owner. Some are manual throttles (meaning the operator raises and lowers) and are connected to the engine via a throttle cable. Most use aircraft throttle cable because of its flexibility and because it does not take much force to pull the inner cable through the outer cable. These manual throttles all have some type of manual throw. Mine is a brake lever, others use go-cart twist grips, 3-wheeler throttles, etc. Other types of throttles are electronic. See similar questions...

A stock throttle body inlet is 48 mm in diameter. The matching inlet on the intake manifold which it's attached to is about 52 mm. Therefore, you can safely buy a 52 mm one (like that from TPIS) and bolt it on in place of the stock one without any other modifications. Anything larger (like the 58 mm job from Lingenfelter) would require the intake manifold to be bored out to handle in the increased volume of air. See similar questions...

Although performance levels will vary among different applications and driving styles you can expect the following gains with the use of a throttle body spacer: See similar questions...

Throttle body spacers are generally quite easy to install. Most of them can be installed within 30 - 45 minutes with common hand tools. If you purchase throttle body spacers which are manufactured by reputable companies such as Street and Performance Electronics and AIRAID you will get a complete kit, including all hardware and gaskets making installation that much easier. See similar questions...

The throttle body spacer adds velocity by effectively improving the vacuum response to the TBI or carburetor. The throttle body spacer, effectively increases the runner length of the intake manifold while at the same time increasing the overall plenum volume. This, in turn, also acts to prevent any of the air-fuel mixture from hitting the bottom of the intake manifold and bouncing back up to scatter in the intake manifold increasing overall performance and throttle response. See similar questions...

Specialty Equipment Market Association (SEMA) is an automotive aftermarket association that represents the industry in many matters. It's especially an important body in legislative matters and as such functions as a major lobby to state and federal legislative bodies in America. Article 1: You have the Right to buy high-quality reliable aftermarket performance and specialty parts, accessories, and styling options. See similar questions...

Some inlet manifolds may have a hole directly behind the throttle body for the EGR feed pipe. The EGR system is not used in this application and the hole will need to be plugged to prevent a vacuum leak. See similar questions...

Your car needs to be in good mechanical shape. Problems such as overheating, overdue maintenance and pinging will NOT be solved by increasing engine power! Do a compression test and a leakdown test to make sure the engine is healthy. Perform all scheduled maintenance such as fuel filter changes. Make sure your handling and brakes are sorted out. Before installation, run a couple of tanks of premium fuel through the car. See similar questions...

Sorry, we prefer not to release information like that! Sometimes we will give out prerelease information on our R/C Forum, if you pay attention there you might find out some "secret" info. See similar questions...

Yes, it's crucial to have the right system installed. All conversions are dependent upon the age and type of vehicle you have: an older carburettor vehicle will have a different system to a modern fuel-injected one. Again, it's vital that this is done by an approved installer. New cars already converted will already carry a warranty. However, as part of conversion, some companies will include a warranty as part of the service. If not you can buy it for £70-£90 per year. See similar questions...

Yes it does - very much. It is crucial to have both the right system for your car and to have it fitted by a mechanic trained both to LPGA standards. Modern LPG conversions suffer no noticeable loss of performance. Engines will run smoother and be slightly quieter. The conversion adds a second independent fuel system, making the car bi-fuel or capable of running on either petrol or LPG. This requires a second tank, usually installed in the spare wheel well. See similar questions...

Yes ? Dennig Cars Worldwide specializes in selling vehicles nationally & internationally. We deliver the best vehicles that the market can offer directly to client's wherever they reside. See similar questions...

Not at all, a car wrap is not translucent; so you cannot see through it. This allows you to totally transform your vehicle and hide minor imperfections such as dents, scratches and stone chips! See similar questions...

This is a common question made by people that don't fully understand the operation of the system. The throttle body spacer is not meant to keep the throttle body cool, but is meant to keep the intake manifold insulated from the heat of the throttle body. Remember that most throttle bodies are heated by engine coolant to keep ice from forming in cold climates. This heat transfers from the throttle body to the intake so that the intake is now effectively heated from both ends. See similar questions...

It depends upon the type of throttle body spacer, the type of cold air intake and the type of vehicle. Your best bet is to purchase your throttle body spacer from the same company that manufactured your cold air intake. For example Street and Performance Electronics and AIRAID both manufacture a line of throttle body spacers and cold air intakes which are completely compatible. See similar questions...