This site uses cookies and other tracking technologies to assist with navigation and your ability to provide feedback, analyse your use of our products and services, assist with our promotional and marketing efforts, and provide content from third parties.

ECOTUNE BMW E46 330D Decat Downpipe

ECOTUNE BMW E46 330D Decat Downpipe

(No reviews yet) Write a Review

Need Some Advice? Speak to one of our experts.

PLEASE NOTE: Whilst we do hold limited stock of our Ecotune downpipes, if this item is out of stock it is made to orderPlease allow up to 10 working days from time of order. 

Fits all E46 330D models regardless of year.
This is a direct replacement for the standard catalytic convertor and downpipe that are fitted to the car from the factory. This downpipe will not interfere with any sensors or cause any ECU faults. If you are unsure or require assistance, please don't hesitate to contact us, we will be delighted to assist.
Stainless Steel Downpipe
Built for performance, economy and longevity!

Performance - You will enjoy reduced turbo lag and a noticeable performance difference throughout the entire rev range! The original downpipe has a near 90 degree angle into a restrictive "heat soaked" cat which is replaced with a smooth bend and unnecessary under bonnet heat is reduced. Turbo lag is reduced and the reduction in turbo temperatures has a direct effect on the air intake temperature. This promotes a cleaner burn and with the correct software, a higher power remap can be applied safely in the knowledge that your turbocharger is running cooler.
Economy - You will experience around a 2 MPG improvement over the original restrictive catalytic convertor depending on your driving style due to the reduction in your turbo and intake temperatures.
Longevity - Your upgraded dowpipe is over-engineered in 304 Marine Grade stainless steel and the flexible coupling in 304 Grade stainless steel, your new downpipe should outlast the life of your vehicle. You should also expect your turbocharger to have a longer life as temperatures are greatly reduced.
Perfect Fit - This downpipe was carefully developed using the Genuine BMW factory item as a template then improvements were made to flow where possible.
Noise - The only difference to the sound from your exhaust is a very gentle whistle from your now de-restricted turbocharger. This in no way has an effect on the exhaust note.
Quality - Built with over 20 years experience in all kinds of fabrication and welding you can be assured that the quality of your new performance downpipe will be second to none!
Guarantee - A lifetime guarantee is offered on the pipework and as the uprated stainless steel coupling is a flexible part, we offer a two year warranty on the flexi section.

Trade in – We offer a £80 trade-in on our old genuine BMW part! Simply send your old part back to us, include a note with your name and your contact details. We will inspect your old part, make sure it is genuine. Once we have done this, we will refund the £80 back to the bank details you paid with. If you have any questions, please don’t hesitate in contacting us! We are happy to help.

Returns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Related Products

Contact & Phone Orders

Ecotune UK Ltd.
Unit 10, 36 Dalziel Road,
Hillington Park Industrial Estate,
G52 4NN
Call us: 0141 882 4669

Shop with Confidence

SagePay & PayPal Payments

Finance Available

Call our team to discuss financing by Klarna.