69MM BORED OUT THROTTLE BODY FOR HOLDEN MONARO V2 SERIES I, II L67 S/C 3.8L V6

Installing a bored out throttle body is a very cost-effective way to bump up the performance of your Ecotec or L67 supercharged 3.8L V6 engine by increasing airflow by 14%.

Designed and manufactured by a team of qualified mechanical and automotive engineers, so you can be assured of the outstanding quality and workmanship of these re-manufactured throttle bodies. The photo does NOT do these throttle bodies justice!

Through different testing procedures, gains of around 10hp at the rear wheels have been recorded if used in conjunction with extractors/exhaust and cold air intake. A greater power gain can be achieved with additional mods such as a larger cam and supercharger etc.

On top of this power increase, it will also make your engine sound meaner (i.e. more air rushing into the engine) and offer a much better throttle response.

Please note that we don't manufacture these throttle bodies in 70mm as we feel that they are unsafe in long term since the wall thickness is too thin and may fail over time.

These throttle bodies have been fitted to a number of cars including David Wilzig's ITT.38L, which was the FASTEST V6 IN AUSTRALIA, pulling 9.981 seconds @ 137.88mph down the quarter and making 750hp! So these products have been well proven to work even on the most extreme cars.

As you can see on the before and after dyno graphs, a VY Commodore with manual transmission, extractors/exhaust and chip have made 161.2hp at the rear wheels. After changing leads, spark plugs and installing our larger throttle body power jumped to 176.9hp at the rear wheels.

Power Run - Standard Throttle Body

Power Run - Larger Throttle Body

Please note that our throttle bodies use a brand new 69mm brass butterfly to match the bored out throat. Other products on the market are merely a cleaned up version of the factory item and still use the original butterfly which leaves the main restriction to airflow in place. This is done to mislead people into thinking that they are selling a larger throttle body when they actually are not! To be sure, it is best to ask for photographic proof that the butterfly diameter is what they claim it to be.

Measured Throttle Body

Vehicle Fitment Guide

Notes:

• These throttle bodies are not polished.
• Vehicles equipped with automatic transmissions will require a tune as the shift points are altered by fitting this throttle body. We can provide a re-calibrated PCM or memcal to suit.
• For customers with either Caprice/Statesman WH or Monaro V2.II models later than 09/02, we recommend to check the throttle body to determine if they have VX or VY type. If you are unsure, please send us a picture of the IAC mounting boss on top of the throttle body to determine it for you.
• Mace bored out throttle body to suit Holden VY 3.8L V6 can be purchased through another listing.

Please remember to check out our other performance products for sale

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Returns Policy

At Mace Engineering Group, we take great care in packaging of your products appropriately to ensure that they arrive in perfect condition. If for any reason your product is damaged during shipment, please contact us immediately to arrange for the return of your product(s) within 14 days. We will then provide you with a replacement product as soon as possible.

If you receive a product with manufacturing defect, it must be returned within 14 days. After appropriate testing, if it is found that the defect is due to misuse, willful damage, unauthorized repair or tampering with the product by the customer, return will not be accepted by Mace Engineering Group. Strictly no returns/refunds will be given due to buyer's change of mind or remorse. This is in compliance to the ACCC warranties and refunds.

Re-Stocking Fee & Refunds

If a purchased item is returned due to buyer's remorse or misorder, 10-15% re-stocking fee will be applicable at our discretion, depending on the item.

Paypal has changed its refund policy and will no longer refund the fees deducted for the original transaction, therefore, Mace Engineering Group will deduct the 2% fee while making a partial or full refund other than the restocking fee, if applicable

Postage cost is non-refundable.

Domestic Orders

• Orders typically take 1-2 business days to prepare and process prior to dispatch.
• Freight may take 1-7 business days from the date of dispatch to delivery within Australia.
• Orders can also be picked up directly from us on business days. Please email us.
• Orders are neither dispatched nor delivered on weekends.

International Orders

• Shipping will be calculated automatically based on the delivery address.
• Orders outside of Australia may take up to 10 days.
• You will be responsible for any applicable taxes and/or duties and will need to be paid upon delivery.

**Saturday and Sunday ARE NOT business days**

Product Warranty

Mace Engineering Group products are covered by a 1 year warranty, unless otherwise specified in the ad or written agreement from Mace Engineering Group.

Terms of Warranty

Customer must return the defective item(s) first, with a full description of the problem. Appropriate tests will be conducted to determine the authenticity of the defects and claims. Once, Mace Engineering Group is satisfied, identical items(s) will be sent out to the customer.

Please ensure proper packaging of the product to prevent any damage while in transit, as goods are at owner's risk.