Great service from tdi tuning, took my 318d in for a box installed and im happy with the results, very noticeable increase in mid range torque on the default setting, looking forward to ramping up to map 7 over the next few days. Was in and out in under an hour including a short test drive. Cheers guys.

Had my box fitted today at Manchester branch 5*service Buzzin I am Noticeable difference straight away #power#torque#bhp Happy defo recommend

After some problems with being sent the wrong wiring harness (an issue they have now resolved in their dispatch process) & it taking a few days to get the correct one, TDI Tuning has been very helpful and professional and followed up with great customer service. The CRDT4 Twin Channel Tuning Box on my Mazda 6 2.2d Sport is outstanding. Turbo Lag reduced and flat spots in the rev range removed. Car pulls much harder,faster and for longer when accelerating. Overall nicer to drive. Fuel economy, can't comment on yet, but as this isn't my 1st Tuning Box I'd be surprised if there was any benefit in mpg unless you drive like a nun... because let's be honest.... you don't 'really' buy these things for fuel economy do you 😆 I can say the CRDT4 from TDI Tuning is better than the Twin Channel Pro Boost Tuning Box from BlueSpark automotive it replaced in my car. It has smoother power delivery & feels like more power (both tested on default middle setting), the BlueSpark box you could feel jerkiness in acceleration as the box kicked in over certain revs - making slow round town driving a bit less comfortable. TDI's box is much smoother. It's also a better design as you can change settings with the press of a button vs taking the whole thing apart with Allen keys to change anything on Bluesparks. All in all very happy so far with the purchase !!!!

Installed the box myself into my Audi A6 2.0TDI , easy install and worked straight away. Engine feels much smoother now and accelerates better. Fuel economy is up on the computer however Im waiting for a long motorway trip to judge properly. Excellent service right from placing the order to make sure I was ordering the correct box for my car. Definitely recommend! Now what can I tune next!!!

Crtd4 box for my Range Rover td6 took about 15 mins to fit and does everything I wanted it to do excellent work lads I would recommend all day long

Excellent product and great customer service. Much better than the Mountune MP275 on my mk3 focus ST.

Excellent service.

I have been using one on my skoda octavia for about 3 years now no problem with it at all much improved torque so great for safe overtaking and on a recent 400 mile trip averaged 65mpg on mixed roads

Very quick delivery, installed box within 5 mins on Mondeo 2.2tdi thanks to included photo. Very happy with it. First drive and car felt smoother. Already seeing fuel gains too. Done 40 miles mixed but mainly town driving and mpg already 2mpg higher than previous.

Thanks to TDI tuning, fitted the Box yesterday and wow my M135i is crazy quick and a big thanks to the after sales team for your support cheers Andy Regards Stewart

I have had 2 different boxes off these guys first a crdt2 twin channel on my a5 coupe black edition and it was fantastic massive performance upgrade giving it almost 235bhp it was a 2.0 diesel. Know on my new A5 sline 66 plate the new triple channel box took it from 190 - 240 bhp again a massive difference no faults smooth gear changes and immediate power if your getting a box or remap these guys are the ones to go to.

Very good. works good on my audi my mpg went up

The Mercedes E350 is not a slow car by any means. After giving it to the boys at tdi tuning it came back a completely different car. The car pulls like a steam train throughout the whole rev range and just wants to keep pulling. I also took the car to the French Alps last summer and with a change of pin position to the box , the mpg was outstanding. I couldn't be happier with the product and would recommend it to anyone thinking of using tdi tuning. Great product boys.

Had my E220 Merc done by these guys in Manchester. I have to say, Rob & Stuart were absolutely spot on. So helpful which puts my mind at ease. The performance increase at the moment is awesome. I didn't want something super quick, I just wanted less Turbo LAG and smoother power delivery. I got everything. Car drives brilliantly and is more like the E350 I have driven in the past. Spot on. Would recommend, not only because of the product, but because of the staff.

Just like to say that I have just purchased one of these for my 2010 Nissan Navara. The service is brilliant and the product is first class. Also would like to say thank you to Stewart and Rob at the Manchester branch for their technical support on the fitment. Only took me 15 minuets once I was sorted hardest job was getting the grille off . Thanks again Guys.

Just like to say that I have just purchased one of these for my 2010 Nissan Navara. The service is brilliant and the product is first class. Also would like to say thank you to Stewart and Rob at the Manchester branch for their technical support on the fitment. Only took me 15 minuets once I was sorted hardest job was getting the grille off �. Thanks again Guys.�

Skoda VRS 230 petrol, had the tuning box fitted to my GTD so needed a remap to go on my new car so when I heard about Manchester opening it worked out great. The guys were great and remapped and fitted it for me in about 45 mins, now running it on full power 279 bhp it pulls like a train. Great product and great service cheers.

Just installed my tdi tuning box to my fiat motorhome and it's made a big difference no more lag it goes up hill in 6th gear pulling like a train very happy with this product. Geoff henman chesterfield