We offer telephone support.

Our tuning boxes also do not have to be TUV approved like many competitor units manufactured in Germany, resulting in a significant cost saving which can be passed on to you, the customer.

Every unit is individually tested to tight specifications.  We test units on a wide variety of vehicles and have developed and rigorously tested every unit we sell for the application it was designed for.

Our tuning boxes are designed to give smooth, useable power increases.They don’t cause the car to pour smoke, go into limp home mode, or overstress the engine to the point at which you risk damaging components. The default map provided on our tuning boxes increases torque without increasing maximum fuel pressure, protecting your fuel system from additional wear.

We provide detailed fitting instructions for every application we sell a product for: When comparing us with our competitors ask yourself this: If they claim to have tested their system on a variety of cars, why have they installation instructions for only a few vehicles? We promise you that dyno testing is much harder work than taking a few photos…

All of our products carry a 28 day money back guarantee, so you can purchase with confidence knowing that if our products do not perform to your liking, then you can send them straight back for a full refund.

You may ask why our products are so reasonably priced? The real question should be why are the other options so expensive?

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SW Diesel
Average rating:  
 132 reviews
 by Scott
LDV T60max Pro

Like all chips I was a little pessimistic, however after getting a mate to help me install it and we gave my Ute a test drive all we could say to each other was DAMN!!! Only have had it installed for 2 days so can’t wait to see what improvements happen with fuel use. My wife after taking her for a drive was just don’t get caught speeding or racing. Overall highly impressed and Steve was a dead set champion. Thanks mate for having such an amazing product! My Ute is so much better.

Again thanks Steve

 by Peter Klein
Isuzu NPR300

Had this chip put in 6 weeks ago and have trialled my truck loaded at gross 9 tonnes and have noticed increased power and better than 10% fuel saving compared with previous trips when unchipped.

Installation was very easy, Steve was very happy to help immediately with an enquiry over phone regarding installation.

Very happy with chip performance and after sales service. Thanks Steve. Highly recommend.

 by Peter Novak
SW diesel v6 ranger

Compared to the dp chip Ihad on my previous bi turbo ranger the difference is huge. After having it on the highest setting with the dp chip it ran well ,plenty of long trips no problems but didn't notice a great deal of difference between factory setting and highest setting unlike with sw diesel on the v6 ranger ,a huge difference between map c to map e and after towing with it ,was more economical than would've thought providing your not too heavy on the right foot, but you dont need to be . Map e might'nt be everyones choice but if you drive it sedately most of the time and use it when needed ,economy is not that bad. Its a very good product I'd say and Steve provides good backup. Peter

 by Peter
Isuzu NQR Motorhome

Wow purchased to improve torque in the 1500 to 2100 rpm range. Am gobsmacked the difference in torque, pulls harder in this rev range, changes gears up earlier and changes down later. Really impressed with the positive power difference

Did not buy for fuel economy but appears to running 10% less fuel but early days.

Great customer support. Highly recommend.

 by Robert Fishburn
SW Diesel - Mazda BT50

Purchased a SW Diesel chip for my Mazda BT 50 M17 Ute at the Wodonga Caravan show recently and finally got it fitted with the help of a small handed mate as one plug was very hard to remove. I noticed straight away the difference in towing our 2.8 ton caravan. The motor ran smoother sitting on just under 100 kms/hr. and not struggling when coming up to hills. I haven’t done any detailed fuel tests yet but did notice it seems to have improved the fuel economy on our recent trip.

I have been telling all my colleagues how impressive it is and would highly recommend it to anyone who is looking for more power out of their diesel motor 👍

 by Nathan

Steve was super helpful and excellent customer service! The chip makes driving and towing so much easier. Highly recommend!

 by David
Unleashing the Power Within

I found the SW Diesel chip has unleashed the power already there but held back by Nissan. Turbos' spool much faster reducing boost lag and even ensuring much smoother auto gear changes due to power response immediately following the change. Even comes with better turbo whoosy noises. Support is excellent from Steve with quick and help assistance.

 by Greg
Putting the sport into the Pajero Sport

Purchased this from the Sydney caravan show at Rosehill racecourse. Initially my Pajero Sport was fitted with a DP chip which I was very disappointed with.

As soon as I installed the SW Diesel chip I noticed the difference straight away. Acceleration is noticeably more rapid. Towing a 1.5 ton trailer is less stressful now. It will hold the speed much more easily in top gear.

Highly recommended product. Don't waste your money on other gimmick products like I did.

 by Kim Fitzpatrick
Landcruiser 70 series

I bought a Toyota Landcruiser 76 Series last year to tow a large caravan (~3.5T).

I have been very disappointed with the sluggish performance of the Toyota, even though it has a 4.5L V8 engine. I expected much better from Toyota.

Yesterday, I met Steve from SW-Diesel at the Caravan show at Rose Hill in Sydney and we discussed the pros and cons of the various options. I have listened to "experts" on diesel tuning for 12 months and had become frustrated by the conflicting opinions. Steve seemed to know what he was talking about, so I bought a kit at the show and fitted it today.

Wow!!! The difference in performance is astounding and there are more options to increase power further if needed (which I don't think will be necessary).

I have not yet assessed the impact on fuel consumption but remain optimistic.

I have two minor criticisms. The first is that the instructions could add a few more details and perhaps slightly clearer photos. The second is that Steve must have very small hands as I had to ask my co-driver (wife) to undo and reconnect the rail to harness plug. Clearly this is Toyota's fault, not Steve's.

Having now been through the process, I would recommend this mod to other Toyota 70 Series owners.

 by Ray Forbutt

Just installed the performance chip into my 2022 Musso, the change in performance is very noticeable. I am a novice at mechanical work and with one message to Steve I had a phone call in less than 5 minutes. Great service Steve.

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