Hall Effect Throttle Position Sensor for EP3's 01-05 Honda Civic Si and CTR

$ 95.00

- $ 99.00

Availability: In stock

Brand: ACUITY Instruments

Seasoned mechanics and gear heads know that more often than not, OEM replacement parts are more reliable than aftermarket parts. Unfortunately, anyone who has searched for an OEM replacement for a...

Seasoned mechanics and gear heads know that more often than not, OEM replacement parts are more reliable than aftermarket parts. Unfortunately, anyone who has searched for an OEM replacement for a ACURA RSX-S or Civic Si throttle position sensor (TPS) knows that Acura/Honda only sells them as part of the throttle body with a steep list price of over $800 USD. Aftermarket alternatives have existed for years, but all that was available until now were poorly made copies and expensive adapted versions of other sensors. That's why ACUITY designed a replacement TPS from scratch. Instead of using the OEM wiper-style design, we used modern hall effect technology to provide improved reliability and accuracy. Combine this with a tastefully designed, nylon composite injection molded housing and you have an incredibly durable design. Tested to over 2 million cycles, every design element in the ACUITY TPS was chosen to provide an improvement over the OEM design. It's no coincidence that the ACUITY TPS looks a bit different than its OEM counterpart, that's because it is. The hall effect technology used provides a contactless design that reduces wear and tear while offering a smaller form factor and reduced weight.

The Benefits of Hall Effect:

Before the introduction of drive-by-wire throttle bodies, Honda used wiper-style variable resistors to measure throttle position. These OEM sensors and the many re-branded, low-quality sensors that look like them are prone to premature wear and unsteady measurements due to engine vibrations. Designed by engineers with a background in Formula 1 and LMP racing, the ACUITY hall effect sensor uses a contactless design that is highly resistant to vibrations, meaning it will give you reliable readings for many years. In addition, since the ACUITY Hall-Effect TPS is equipped with an on-board signal processor, the voltage output is incredibly smooth and consistent. The end result is improved engine responsiveness at tip-in, improved idle, and improved throttle response, especially on vehicles with stiffer than stock engine mounts.

  • Contactless Hall-Effect technology provides increased precision and reliability over wiper-style designs
  • Fiber-reinforced composite housing is more durable than OEM sensors
  • Integral o-ring seal replaces the low-quality OEM style paper gasket.
  • Durable, rolled connector pins will not become damaged during installation like many aftermarket alternatives
  • Extended calibration range ensures each sensor can be calibrated exactly within the OEM range


  • 2002-2006 Acura RSX Type-S
  • 2001-2005 Honda Civic Si
  • 2002-2006 JDM Honda Integra Type-R

    Customer Reviews

    Based on 4 reviews
    Recommend this TPS to every EP3 owner

    Just replaced the TPS at 166K KM, what a night and day difference!!!
    The RPM is silky smooth from idling to revving to the red.

    I also bought the calibration tool, which makes it easier to calibrate.
    The exposed terminals are very close, pay extra attention not to short it, or tape the one not in used.

    A dremel extension shaft & a low-profile ratchet are highly recommended to get this job done.

    The first start up threw a check engine light, after resetting the ECM, the light is gone.

    TPS on UK Civic Gen 7 Type-S

    Used the TPS for the US civic Si. Fits perfectly as it's the same K20A3 engine. My type-S had done 90k miles and the TPS was shot. It was actually causing a Lambda fault code due to fuelling errors. The car is now much more driveable at low throttle, and seems much more eager to accelerate
    It really is like driving a different car. Two minor improvements would be to use torx or hex sockets for the mounting screws rather than Philips, as access is very tight and a screwdriver is the wrong tool. The other improvement would be to the calibration harness; I was worried about shorting the 5V to ground due to the exposed terminals being very close together when probing. I bared a different section of the cable in order to get a probe on safely. The actual finished result is faultless. Well done guys.

    Can't find a better one.

    Can't find a better Tps on the market for Ep3 and dc5 k20a series cars. Response is amazing and so is the accuracy of this unit much better than oem or other replacement options.definitely suggest getting the calibration harness Made calibrating this a cake walk.

    Great Product. Quickly shipped

    Great Product. Quickly shipped. Was having stutter/hesitation due to a failing TPS sensor. Checking out the readings with K pro Hondata software and determined that the TPS was going. Read the reviews on amazon for this product and gave it a shot. Fixed the problem immediately. My car now runs smoother and accelerates quicker then before. Would recommend to anyone with K series TPS issues.

    Please note that all shipments ship the business day (mon-fri, except on holidays) after they are received. 

    Next-Day Shipping Policy:

    Shipments are sent only after payment has been received. ACUITY Instruments LLC reserves the right to delay shipments temporarily if credit card fraud is suspected. ACUITY Instruments LLC ships all orders on the next business day. This means that if you purchase the "next day" shipping option, next day shipping will go out the next day, meaning a total transit time of 2-days. Similarly, 2-day shipping takes 3 days since the order is filled the next day. If you require faster shipping, we recommend you contact one of our vendors that carries inventory.

    Shipping Options:

    Everyone loves lots of shipping options! We offer USPS First Class, Priority, and Priority Express for shipments to most countries and states. We also offer UPS Ground, 2-Day, and other options for most US states and territories. Please remember, all orders ship the day after they are placed. 

    Shipping Insurance and Signature Policy:

    Acuity insures all packages it ships. This insurance covers damage to or loss of the product while in transit only. This does not cover theft of the package after delivery. Because of this, a signature is required for delivery of all orders over $100 (before shipping costs). If you will not be available to receive the shipment, many carriers permit the recipient to leave a note on the door instructing them to leave the package. If you choose to do this, please remember that Acuity Instruments LLC cannot insure packages that are stolen.

    Free Shipping Options:

    Occasionally we offer shipping specials where orders over a certain amount are free. If we are offering this, you will see the free shipping option in your cart at checkout. If no options is visible at checkout, then either there is currently no free shipping offer or you are not in a zone that qualifies for free shipping. Most states in the continental USA qualify when a shipping special is being ordered. There is no choice of carrier for free shipping, but typically we will ship your order will likely ship using either USPS or UPS. If you'd like a faster delivery, you can opt out of the Free Shipping option in favor of a faster, paid, shipping option.


    Taxes on International Shipments:

    It is against Acuity's policy to falsify tax documents during the shipment of goods to locations outside of the USA. The tax documents for your shipment will reflect the price you paid for the parts. Please do not contact us requesting us to falsify tax documents so that you do not have to pay taxes on the shipment as we cannot do this.

    Guaranteed Times by Carriers and Related Reimbursements:

    On some shipping services, like USPS Priority Express, the service provider (USPS, UPS, DHL etc) will offer a shipping reimbursement if the order does not arrive on time. ACUITY does not assume responsibility for tracking these matters. If you suspect your service may have a delivery-time guarantee and was delivered late, please contact us with the order # and delivery info. Please note that a full refund is typically not provided by the carrier. ACUITY does not offer full reimbursement of shipping costs, but ACUITY will pass on 100% of any reimbursement for shipping costs from the carrier to the customer.

    Domestic Transit Times:

    For orders shipping within the continental USA, USPS First Class shipments will usually take around 5-7 business days for delivery. USPS Priority usually takes closer to 2-4 business days, and Priority Express usually takes about 2 business days. Your exact transit time will vary based on your location. 


    International Transit Times:

    USPS First Class International shipping is very economical, but the transit time can be very slow. Please allow up to 4 weeks for delivery of orders shipped via USPS First Class International. USPS Priority mail is typically faster, normally taking closer to 2 weeks. USPS GXG is faster still, typically taking only about 1 week. Your exact transit times will vary depending on your location, and it is possible that your exact transit time will exceed the values provided here. We also offer UPS international shipping options for many countries.