The spacer is CNC-machined from 6061-T6 billet aluminum and uses a serrated/helix entry that creates turbulence in the intake manifold. The manufacturer lists it for the Acura MDX, RDX, RLX and TLX V6-3.5L, so it fits the 3.5L TLX as a plug-in upgrade between the throttle body and intake manifold. Buyers searching for a 2015-2020 TLX 3.5L throttle body spacer, V6 throttle spacer, or whistle-free helix spacer should note that the manufacturer's dyno-proven gains of up to +5 HP and +10 lb-ft of torque are its own claims. Those numbers are the main justification for the price over a plain spacer, but results are debated. Owners on user forums have said that spacers of this type can deliver a noticeable change, while other enthusiasts consider the gains close to zero.
The helix entry is also the reason to choose this kit over a plain spacer. The manufacturer states that the unique serrated/helix entry design creates turbulence and reduces whistle sound. For installation, one TLX owner on a user forum reported the swap took about 30 minutes with no modifications. Confirm the spacer and gasket orientation against the kit's instructions before tightening, because the manufacturer's sheet for a related Silver Bullet spacer shows the engraved side facing the throttle body.
The manufacturer lists this spacer for the Acura MDX, RDX, RLX and TLX with the V6-3.5L engine, so the TLX is a listed application. Confirm your model year and drivetrain against the fitment tool before ordering.
The manufacturer says the serrated/helix design reduces whistle sound. A TLX owner on a user forum described the spacer as howling, so expect a change in intake sound and judge it by ear.
The manufacturer's dyno claims are up to +5 HP and +10 lb-ft of torque. These are manufacturer figures, and user forums are split on whether spacers of this type produce a measurable gain, so results will vary.
Installation involves removing the intake tube, unbolting the throttle body from the manifold, placing the spacer and gasket between them, and reinstalling the throttle body with its hardware. One TLX owner reported it took about 30 minutes with no modifications. Because a spacer moves the throttle body and everything attached to it, user forums on other Acura platforms warn that the extra spacing can shift the intake and stretch sensor wiring, so check clearance with any aftermarket intake before you tighten the bolts. Use the torque value in the kit's instructions, since the specification for the TLX was not confirmed in this research.
