ECOTUNE BMW E39 525d / 530d Decat Downpipe

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

Fits all E39 525D & 530D Saloon and Touring models regardless of year.
 
This is a direct replacement for the standard primary dual catalytic convertor and down pipe 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 316 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.
 
THIS KIT IS DESIGNED FOR OFF-ROAD USE ONLY AND MAY NOT CONFORM WITH CURRENT EMISSIONS LEGISLATION.

This part is strictly for off-road or motorsports use only. This part will not pass MOT and is not legal for on-road use. Purchase at your own risk and discretion.

Ecotune do not assume responsibility for the use of this part on public roads in the UK or abroad where emissions controls have been removed. It is the customer’s responsibility to ensure compliance with the rules and laws of the area of use.
We would like to advise that it is illegal to remove any emission control devices or increase the exhaust noise limit on vehicles permitted to drive on public roads in the UK and most other countries around the world. Please check the rules and laws relating to this in your country.

Any parts supplied or work carried out by Ecotune are strictly for off-road use and may fail an MOT test. This means that we cannot accept any responsibility for vehicles being driven on public roads where removal of emission control devices is prohibited. If you carry out this work at our premises, we would not be able to road test afterwards...