01271 344452 
 
 
 
diesel specialists north devon.
 
diesel power filters garage barnstaple.
 
 

Diesel Performance Tuning 

Tunit is an electrical product that can be fitted to all modern Diesel Cars, 4x4s, Commercial and Agricultural vehicles, motor-homes, marine vessels to improve fuel economy and increase performance. Fred Sanders Garage Services in Barnstaple is one of the few Tunit fitters and specialists in the North Devon area. 
 
The Tunit works by careful and safe modification of signals sent from the engines own control computer to the engine. Accelerator, air, fuel and load readings are accurately used to calculate improved signals that are delivered to the engine with digital precision and speed. The result is a smoother power and torque gain. 
 
More power is delivered throughout the rpm range and more importantly lower down were needed for improved take off and acceleration. This produces progressive gains without sudden surges or dropping of power. The turbo or other mechanical parts are not directly altered, so there is no strain on this or other engine components. 
 
Increased Power & Torque 
12% Better Fuel Economy 
Reduced Emissions by up to 27% 
9 Position Adjustment 
Fred Sanders Garage Services in Barnstaple is a specialist Tunit supplier and fitter, for more information about Tunit click here to visit their website. You can even spread the cost of having your Tunit product fitted and start saving on fuel! Click here to see Tunit payment options. All Tunit units come with a full 5 year product warranty. 
 
 

Diesel Performance 

Over 2,000 diesel applications, non-invasive installation and adjustable tuning. Cost effective performance tuning. Fits all make of diesel car for better performance and fuel savings. 

4x4 Performance 

Pulling power is essential. From fun off-roading to serious working 4x4 vehicles. The Tunit will improve the torque where you need it to pull those heavy loads. Fuel economy can be improved by 7-10%. 
 

Commercial Performance 

Fuel economy is the name of the game for vans etc. 7-10% fuel savings on most vehicles. The increased torque results in fewer gear changes whilst optimising fuel delivery against throttle position. 

Agricultural Performance 

Agricultural equipment such as tractors and combine harvesters benefit from extra power. More power means more efficient ploughing, bailing, or spreading. 
 

TUNIT I 

The Tunit I is extremely compact in size and weight. The two variants of it are interchangeable with many other vehicles. The Tunit I fits VW, Audi, Seat, Skoda and more. This tunit like all models is quite unique in it's ability to be easily adjusted to each individual vehicle. Fitting is usually carried out in 10-15 minutes, and adjustment is easily accessible although comes pre set like all models. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 
 

TUNIT II 

The Tunit II is extremely flexible, it will fit almost any vehicle prior to common rail engines and although it does not come with matching manufacturers plugs its great strength is that it can be used on almost any Tdi or non Tdi engine other than the latest common rail type engines. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT III 

The Tunit III is extremely flexible, it will fit almost any vehicle prior to common rail engines and although it does not come with matching manufacturers plugs its great strength is that it can be used on almost any Tdi or non Tdi engine other than the latest common rail type engines. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT IV 

Tunit IV is used on some older semi electronic pumps, such as those fitted on Peugeot / Citroen 2.1 TD and Ford Transit. An old tunit now but still very effective, it is attached by seven fine wires in parallel to existing wires leading to the ECU. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT C11 / TUNIT C20 

More pulling power! Cut fuel costs! Commercial diesel tuning with Tunit not only increases power by 20% but also more importantly saves fuel. This is achieved by the increase in torque allowing more efficient gear changing - shorter gear range changes and fewer gear changes. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT V-CR 

The Tunit V-CR covers the majority of modern diesels and in its different forms fits all common rail engines. The size of a mobile phone and complete with original manufacturer’s plugs, it comes pre-programmed and can be altered by manual adjustment or laptop tuning. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT V-PD 

This tunit suits all PD or single unit injection systems. It comes complete with original manufacturer's plugs and is easily fit in under 20 minutes. Once fit it is un-obtrusive and original in appearance. The power and torque gains are more than impressive giving incredible performance. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

TUNIT V-VP 

The Tunit V-VP is suited to all engines with variable pumps. These are mostly the Japanese engines up to 2001, although some manufacturers still prefer this injection system. The Tunit comes complete with a detachable harness and either a connection to fit to the ECU or wires that attach to your existing wiring harness. 
DIMENSIONS (mm) 
35 X 55 X 20 
WEIGHT (g) 
40 
EMC EMISSIONS 
POWER CONSUMPTION (g) 
12 
 

NEW FOR 2014: THE TUNIT ADVANTAGE 

The Tunit Advantage now offers even more power and even more fuel savings than any other model in the Tunit range. 
 
ADVANCED HARDWARE 
PERFORMANCE PLUS SOFTWARE 
KEY FOB ADJUSTMENT TOOL 
5 YEAR PRODUCT WARRANTY 
 
 
To visit the Tunit Fuel Saving Calculator page click here. and to find your vehicle make and model click here 
to see what Tunit savings you will make. 
 
If you have any questions about Diesel Performance Tuning and Tunit call Fred Sanders Garage Services North Devon on 01271 344452 or email info@fredsanders.co.uk or click here to complete the form on our Contact Us page and we will do our best to help. 
 
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