The cycle wastegate control valve is what controls the flow to and from the wastegate. The wastegate controls the boost that the turbo can create. It's a fairly simple device. It's just a solenoid that swaps the input and output of the top pipe. This is the cycle...
Smartmods
for all your modding needs, recommended by Evilution
Kane Harrison
Cylinder Head Bolts
It is important when refitting the cylinder head to get the bolts right
Cylinder Numbering
In which order are the cylinders numbered?
Daytime Running Lights MDC
If DRLs are not standard on your car, you can buy an add on module by MisterDotCom (MDC) that adds the functionality to your car.
DDT4All – Installing & Using
Hardware Required An ELM327 OBD2 diagnostics adapter. It can be either USB or WiFi, but it specifically needs to have an original PIC18F25K80 chip, also sometimes labeled as 25K80. I'm using this one. I recommend the USB version over the wireless versions due to ease...
Debadge 2012 Facelift
Don’t like the new big badge in the grill, want to debadge the grill?
Debadge the Stereo
Remove the lettering from the stereo.
Debadge Your Smart Car
How to debadge your smart car safely and easily.
Decode The Grundig Cassette Radio
Decoding The Grundig Cassette Player This is the cassette player as fitted to some 450 fortwo and Roadsters. The decoding is exactly the same as the radio as it's almost the same unit without the tape mechanism. Firstly we need to open the case to get to the chips....
Decode The Grundig CD Stereo
I Don't Know My Stereo Code This is becoming more common now. Cars are being sold on and the code cards are getting lost. You could own the car for years before requiring the code. By that time, the code card is very lost. Your original options were to contact smart,...
Decorative Wheel Bolt Caps
The standard smart wheel bolts don't weather well so let's cover them up and make them look presentable
Delip the Air Intake
Delipping the smart air intake seems to increase throttle response, increase the speed of the gear change and give the engine a little extra power for no extra money.
Demisting The Windscreen
The smart suffers from misting windows quite badly. Here is why and how to conquer it
Detailing Your Smart
If you want your car looking better than clean
Diagnosis Hardware & Software
Let your car tell you what is wrong
Diesel 450 Engine Mounts
This is how to change the 3 engine mounts on the Diesel 450 fortwo. Side Engine Mounts Remove the bolts from the X-frame on either side and remove it from the car. You can just undo the top bolts and pull the x frame down to get some clearance however, it's easier to...
Digital Boost Gauge in a Standard Pod
Boost gauges are a nice extra but where do you put them so they fit in with everything else?
Dim/Dead Headlights
Headlights stop working but for more than 1 reason.
Dip Stick Lengths
There's a joke you see every now and then when someone says they have a low oil level. "Get a longer dip stick" How Long Is Your Dip Stick? I sometimes get asked the length of specific engine dip sticks. Either they have lost or broken their one or they are sold a...
Dipstick Tube Replace
If your car is an older smart fortwo or roadster, and you have some oil usage problems, it might not be a bad idea to check for leaks, one possibility is the dipstick tube seal.