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Throttle body spacers, they do not work!

4513 Views 3 Replies 2 Participants Last post by  NIS_TITAN06
I've been seeing a lot of people over the years purchasing Throttle body spacers or have bought a Titan with one installed.

This spacers do absolutely nothing from a performance aspect.

This are Titan TB spacers.

Let me explain why. The throttle body spacers are designed in theory to spiral/spin the incoming air flow... ok cool, well that doesn't do anything because the intake manifold design.

Our intake manifold is a large plenum with top fed runners that are 16'' in length to the cylinder head (not including port distance to valve)

Inside of titan intake manifold

Now that you have seen the inside of the manifold, this should shed some light on why spiraling incoming air flow would be negated by the fact it has to be dispersed into 8 runners and travel 16'' before it meets with fuel spray from the injectors.

Once air travels all that way it meets here. Notice the fuel injector spray pattern.

I went a little over bored with the explanation. However, save your 100 bucks as Throttle body spacers do nothing for performance.

Unless you drill/tap them for nitrous jets... anyways...!

Hope this helps!
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Accelerator Pedal Release Position Learning

1. Make sure that the accelerator pedal is fully released.
2. Turn ignition switch “ON” and wait at least 2 seconds.
3. Turn ignition switch “OFF” wait at least 10 seconds.
4. Turn ignition switch “ON” and wait at least 2 seconds.
5. Turn ignition switch “OFF” wait at least 10 seconds.

Throttle Valve Closed Position Learning

1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch is “ON”.
3. Turn ignition switch is “OFF” wait at least 10 seconds.
Make sure that the throttle valve moves during above 10 seconds by confirming the operating sound.

Idle Air Volume Learning (Throttle Position Learning)

1. Perform “Accelerator Pedal Released Position Learning”.
2. Perform “Throttle Valve Closed Position Learning”.
3. Start engine and warm it up to normal operating temperature.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Conform that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
6. Repeat the following (steps 7a, 7b) procedures quickly five times within 5 seconds.
7a. Fully depress the accelerator pedal (HARD)
7b. Fully release the accelerator pedal.
8. Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the Check Engine Light (CEL) stops blinking and turned ON.
9. Fully release the accelerator pedal within 3 seconds after the CEL is ON.
10. Start engine and let it idle.
11. Wait 20 seconds.
12. Rev up the engine two or three times and make sure the idle speed and ignition timing are within the specifications.

I was informed that the first two throttle pedal and throttle valve learning procedures are actually both completed when doing the first procedure. This was told to me by the "Nissan doctor" nick 5523 motorsports
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whoops, well that stuff helps too above lol. I will leave it there. Actually using it for a screenshot to something else!

Those steps above are actually good to do every 6 months to a year or sooner.
They work holding down paper when it's windy ������
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