BMW 3 Series Diesel Chip Tuning Boxes

Advanced diesel chip tuning boxes guaranteed to boost performance for the BMW 3 Series range.

When you opt for a CHIP Express™ digital tuning system, you are choosing an innovate and bespoke tuning solution that has been specifically programmed and setup for your particular engine. As such, it works in harmony with all of the built-in engine safety parameters of your BMW 3 Series. Choose the safest system you can, from a respected and trusted company, and start enjoying significantly improved performance and economy!

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Feedback From Our BMW 3 Series Customers

Mark from Godalming with a BMW 3 Series E90 318d 143 said: Just wanted to write in to thank you for a fantastic product which increased the drivability, power and efficiency of my new BMW 3 series and gives me the same power as the next model up! A great 'plug and play' product which can be fitted and removed in a couple of minutes. I was concerned that it wasn't going to work but I shouldn't have worried. Couldn't recommend your product enough as well as your excellent customer service.
John from Goole with a BMW 3 Series F30 330d 258 said: I originally fitted my chip to my 325d BMW, after sending it back for re-programming it was then fitted to my BMW 330d, I found the power and fuel economy to be exceptional. I am now changing to a VW Amarok 2.0 BiTDI due to work and I have just sent it back for re-programming again. I have found the service Chip Express provide to be first class in the years I have been using their chip and have just recommended them to a work colleague, who is seriously considering fitting one to his car.
Koutsoudis from London with a BMW 3 Series E90 320d 163 said: A Very easy installation. Feels like I am driving another car. Great job guys and just one more word... PROFESSIONALS!
Vassilis from Peristeri, Greece with a BMW 3 Series F30 316d 116 said: I purchased chip tune 6 months ago. The difference was obvious. It does what it says. I tried the same car without CHIP Express. I cannot drive without it!
Ulrik from Auckland, New Zealand with a BMW 3 Series E90 335d 286 said: Been absolutely loving your product in my BMW 335d for 80,000km. Thanks again for giving me 4 years of smiles from ear to ear and more horsepower than one knows what to do with... most of the time!
Allan from Kilwinning with a BMW 3 Series F30 / F31 320d 190 said: I ordered my CHIP Express yesterday and it arrived first thing this morning. Great service. I was dubious about the fitting as I know absolutely nothing about car engines and seriously considered taking it to the local garage to ask them to fit it. But on reading the other reviews I thought I’d have a look under the bonnet to see if I could have a go. I have a new BMW 320d xDrive and on following the instructions sent with the chip it took me LESS THAN 10 minutes to fit it and secure it in the pouch in the engine bay with the Velcro cable ties. The car runs perfectly and the difference is noticeable immediately. It’s an automatic and I no longer get a jerky drive off, acceleration is also smoother and faster. I would recommend this to anyone thinking of upgrading their vehicle performance. If I can fit it anyone can! Thanks CHIP Express for a great product.
Mike from Siilinjärvi, Finland with a BMW 3 Series E90 320d 163 said: I thought about this purchase for about a year. Since fitment I'm so happy, the car is totally different in a REALLY positive way, my 4 cylinder engine now has 6-cylinder torque output, as a result the throttle response is immediate and my consumption has also dropped by 0,9l/100km, now that's impressive! Keep up the good work guys.
Don from Auckland, New Zealand with a BMW 3 Series G20 / G21 320d 190 said: Greetings from NZ. Just a heads up that the new chip unit that you shipped was in my mail box this morning! Have now fitted it and once again WOW WOW WOW, and as I am now onto my 3rd CHIP Express, thought I was used to the additional power and smoothness, but it never ceases to amaze me!
Matt from Filderstadt, Germany with a BMW 3 Series E90 335d 286 said: I bought the CHIP Express diesel tuner for my BMW 335d Touring 5 months ago. The car performs flawlessly on the Autobahn here in Germany. The tires now break traction under hard acceleration if provoked, its great! I will always recommend your product. Tschüß.
John from Ashton Keynes with a BMW 3 Series E90 335d 286 said: Just a quick note to say many thanks for the prompt delivery. I fitted the device this afternoon and am very pleased indeed with the results - as you said, the throttle response is much more linear and consequently the car is significantly easier to drive. My wife has just been out for a drive and is also delighted with the results, so many thanks.
Matthew from Pinner with a BMW 3 Series E90 330d 245 said: A very very good product. A noticeable difference in economy (roughly 5-10%) and you can 100% feel the additional performance. Makes a huge difference in the lower rev range reducing turbo lag. It makes driving swiftly effortless, with the added benefit of improved economy. I have had my car from new in 2011 and installed the unit almost as soon as I'd purchased it. I have had multiple services at BMW service centres over the last 5 years and removed the unit beforehand (just in case) and they have never noticed. I'm not sure if they have an issue with these kits or not, but my experience with BMW is that they'll do anything to get out of a warranty repair, so just to be on the safe side. CHIP Express on the otherhand have given absolutely amazing customer service and support. This is hugely appreciated and gives me further confidence in the product and company, I will never run a turbo diesel without one again!
Mark from Godalming with a BMW 3 Series F30 320d 184 said: Had a CHIP Express chip in my BMW E90 318d 143PS for 18 months and been absolutely delighted with it. I returned the chip for an upgrade when I changed my car to a BMW F30 320D xDrive M Sport. The upgrade was done in super quick time and the installation quick and painless as usual. After about 2000 miles of driving in all conditions I'm pleased to say that the chip works even better than before! My MPG has gone up by about 12-15% and I can push about 600 miles out of a tank (up from just over 500 before the upgrade) and the difference in the acceleration in all gears (including Sport mode) is fantastic. It's a completely different car, which is now more efficient and more powerful - feeling basically like the next model up in the range! Many thanks for such a fantastic serivice and product!
Dr Mahmoud from Waterford with a BMW 3 Series E90 320d 177 said: Many thanks for your prompt delivery (ordered Friday, received Monday in the Republic of Ireland). May I suggest that you change the name to TORQUE Express! I already had a tuning box which produced a max of 215PS for my E90 320d BMW (177PS). Whilst decent enough, there was considerable piston slap under hard acceleration. The CHIP Express tuning system provided a much quieter and smoother power and torque delivery without fuss! The system is intelligent in the way it soon adapts to your driving style and the way the vehicle is being driven so you do not get the sudden jolt you might get with other boxes under hard acceleration. I am really impressed with the overall performance of my 3-series and I think you set the benchmark for diesel tuning systems. The CHIP Express system is indeed a template for diesel performance enthusiasts. It really is that good. I rest my case!
Rod from Ballymena, Ireland with a BMW 3 Series E92 320d 184 said: Got chipped and so far so good. Torque is noticeably up, much more low rev pull. Economy is also up by 2-3 mpg. Auto box is now even smoother for gear changes. Hope the MPG improves even further as my driving style gets used to the less heavy acceleration now required since chipping.
Terry from Northampton with a BMW 3 Series F30 318d 143 said: I found the 318d was cheaper than the 320d with better spec thrown in. The car was ok to drive and lively when I needed it, but I wanted the power of the 320d. The dealer informed me the engine is the same in both models but they're just chipped differently. It got me thinking and my search started for a reputable product to fit to my one year old car. I was a bit nervous but ordered the chip on Friday and was delivered 9am Saturday morning. The photo guidance is really easy to follow and everything just clicked in. I took it for an initial drive round the block on and checked for engine lights or black smoke, but things were good. I've been on two out of town trips since the weekend and not only noticed the extra torque (car will accelerate from 40mph in sixth gear) but my MPG has gone from 52 to 61. The way the car drives has completely changed as the power range, it used to be mostly between 2000 to 3000 revs, and it now drives more like petrol cars I've had with revs going all the way to 5000 without straining. Now when I put it in sport mode it takes off like a bat out of hell! Thank you!
Mark from Sittingbourne with a BMW 3 Series F30 320d 184 said: After much thought and even more research I bought my first CHIP Express tuning system about 6 years ago for a new BMW X3. It was straightforward to fit and made a significant improvement to swift progress (!), smoothness and (even more impressively) economy. When I changed to an Audi I contacted CHIP Express who exchanged (professionally, quickly and at a great price) my existing unit for a new one. Same brilliant results. I'm about to return to BMW (a 2015 3-Series 320d xDrive) and have done the same again. Brilliant Company offering a product that really delivers on all that it promises. P.S. Product brilliance notwithstanding - the customer service is absolutely first class.
Andrew from Thame with a BMW 3 Series E90 320d 177 said: I have a 58 reg BMW 320D AUTO and I have recently fitted one of your Chip Express tuning systems to it. Ill be honest in that the car certainly did not need any more power than it already had. I have had four previous turbo vehicles re-mapped and was always very impressed with the results in terms of power and economy gains. Having read alot of negative comments about tuning boxes I was very sceptical about trying one. I decided to take the plunge though, for the fact that with this system I can remove it (in 5 minutes!!!) for when the car goes to the dealer as it is still under warranty. I can honestly say that this system is equally as good as a remap, but with the added bonus of being able to remove and fit in minutes. Also I now find that the Auto box shifts up gears at lower revs and holds gears under strain much easier. And WOW it really moves now!! Its easy to forget your only driving a 2.0 litre diesel. All in all I am very impressed and would recommend you to my friends and family. Fantastic product!! Well done.
David from Darlington with a BMW 3 Series E90 320d 177 said: Wow, I just cannot believe the difference. It is like driving the 3lt diesel with 50mpg+. I don't know how you have managed it and it shows that for whatever reason BMW are not getting the best out this engine in std tune. Thanks very much and have recommended to all my diesel driving friends.
James from Annery with a BMW 3 Series E91 330d 231 said: Great product! Fitted first chip to my BMW 320d made it so better to drive no with no flat spots plus better on fuel by about 5mpg. Now fitted second chip to my BMW 330d which pulls like a train which so much more torque, very happy with service, a top company!

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What others are saying...

“Be assured, this is NO gimmick. Arrived yesterday (less then 24 hours after the order was placed) and fitted today. The fitting was easy especially with the photos and instructions sent with the chip. The first thing I noticed was the responsiveness of the engine from a standing start, no more lag. I then went on a 30 minute drive both motorway and sideroads and my average fuel consumption went UP from 33.3mpg to 38.7mpg. My motorway speed varied from 60 to 85mph and the sideroads from zero to 40mph. I am so pleased with the whole result. This is worth every single penny paid. Thank you!”


Edwin from Bridgend

Ford Kuga MK2 2.0 TDCi 163

“As do many, I took the 'if it sounds too good to be true, it probably is' approach to performance chips. But CHIP Express were recommended by an impeccable source who had had experience with their product on my model of car - a Citroën C6 with the 2.7 HDi twin turbo diesel. Following a first rate response to a query, the product has delivered in spades. Ten days and more than 1000 miles of mixed town, country, low and high speed driving later I am certainly getting more than 10% more from a gallon, and probably 15%, and the performance is markedly better. Low speed response is immediate and has eradicated what I took to be baked-in lag in a big automatic turbo diesel, and mid-range acceleration is silky smooth, including up inclines. A very good car has been turned into the excellent car I had hoped for all along.”


Simon from Ketteringham

Citroen C6 2.7 HDi 204

“Many thanks for your fantastic service! Unit ordered Sunday, delivered Tuesday am!! Unit now fitted and, as promised, the car is transformed. Winding country lanes tackled quite happily in fifth gear. Cruising on much smaller throttle openings and immediate response on acceleration. The car behaves as a mini car should behave. I had some initial doubts about spending quite a large amount of money on this item but it is worth every penny and would not hesitate to advise anyone to do similar.”


Alan from Coventry

Suzuki Swift 1.3 DDIS 75

“I must say l'm delighted with the improvement from your chip, its on the standard settings and the difference in the car is amazing!!! I have a smile on my face every time I get in the car, and there is about 5-7mpg improvement. With the mileage l do, l can see myself getting my money back in no time at all. So if your a doubter like me, don't be because its one of the best things l've ever bought!!!”


Ian from Manchester

Audi A6 MK4 3.0 BiTDI 313

“A friend recommended one of your "gadgets" a year ago and being not-very-techno (but Scottish and keen to save money!) I bought one. The gizmo has TRANSFORMED the performance of my Land Rover Freelander 2 TD4 AND improved the fuel economy by a genuine 15%; so much so that I have bought another one for our Freelander 2 SD4 which is now a REAL Q-car! (And of course saves fuel...) I have never written a review before (though strangely I do read them and take notice of them, whilst half-believing that they are written by the owner's chums!) so to have made me pick up pen & paper so to speak - I MUST be delighted! Thanks for making technology so simple and so successful!”


Andrew from Lochwinnoch

Land Rover Freelander (2) SD4 190

“May I congratulate you on this diesel tuning product as it has made a noticeable difference to my Land Rover Discovery. I have tried other diesel tuning boxes for my previous vehicles (Kia Sorento, Peugeot 206 and Vauxhall Vectra)... and they all produced slight engine stuttering under certain load conditions. The CHIP Express system does not show any evidence of this and is equal to the likes of an ECU remap (which I have also had done before) for smoothness and noticeable power gains. This would be the only diesel tuning product I would recommend.”


James from Callington

Land Rover Discovery (3) 2.7 TDV6 190