Diesel Power Tunings box of Witchcraft

[tlzeebub]

Having read KLP's post about chipping his 250td I thought i'd have a look and see what was available for my 300td, I ended up buying a box from Diesel Power Tuning and all I can say is OH MY GOD, the difference is unbelievable, previously I'd always laughed at the fact my car has switchable traction control but now it,s actually controlling the traction, unless i switch it off

 

[beachhut]

Hi tlzeebub

How much better, and what about fuel. How much did the box cost including fitting.

 

[ibrar]

Does this box switch traction control on/off or has it given an increase in hp?

 

[Dieselman]

Does this box switch traction control on/off or has it given an increase in hp?

Increase of Power and torque. Both up by about 30%.

It would be interesting to know the EGT figures now.

 

[tlzeebub]

Hi tlzeebub

How much better, and what about fuel. How much did the box cost including fitting.

It raises BHP from 177 to 215 and torque is incresed by 50 somethings, fuel consumption is marginally better, I paid £300 for it and fitted it myself, the difference is amazing

 

[Dieselman]

Have you had the outputs checked on a rolling road.?

Just interested as you may not have been generating 177Bhp to start with.

Was there any soldered connections to make and what has your insurance company said about the additional power hike.?

 

[tlzeebub]

Increase of Power and torque. Both up by about 30%.

It would be interesting to know the EGT figures now.

Dieselman what would be the most economical way of measuring EGT and what should it be? Regards Chris

 

[Dieselman]

You need an EGT gauge and probe.

You have introduced additional fuelling into the air so EGT will have gone up significantly.
700c is the absolute limit before damage occurs.

With modified car you should fit additional warning instruments for peace of mind.

A boost gauge would also be a good idea to see how the boost has increased at low revs due to the increased fuelling.


EGT gauges:
http://www.egauges.com/eg_typeI.asp...l&Letter=All&Needle=All&Diameter=All&Manf=All

 

[Ratz]

Do they have any experience/data on reliability?

Also does it work by replacing the existing engine management or fooling it?

 

[tlzeebub]

Have you had the outputs checked on a rolling road.?

Just interested as you may not have been generating 177Bhp to start with.

Was there any soldered connections to make and what has your insurance company said about the additional power hike.?

Havent had it on rollers, I know its the right thing to do but it always seems cruel to the motor/transmission, but i'll seriously consider it.
There were five wires to solder and even for a numpty like me i managed it ok.
Havent informed insurers yet, will ring em this PM

 

[Dieselman]

Do they have any experience/data on reliability?

Also does it work by replacing the existing engine management or fooling it?

It amplifies the output voltages to the pump control to increase the fuelling.

 

[maddog]

I've had my tuning box (Van Aakken) on my car for about 35,000 miles and nearly 5 years , most of the time its putting LESS fuel into the engine because the economy went up after fitting it

They claim to push the power up by 43hp and torque by a similar pecentage but thats not the full story , the car runs smoother and certainly cruises on the motorway better, i havent bothered dyno'ing it as its an auto its difficult to do but the 0-60 time was reduced by about 1 second, top speed is meant to be imporved but thats irrelavant to me anyhow.

Tuning boxes arent just about the full throttle performance but the day to day driveability.

 

[Dieselman]

I've had my tuning box (Van Aakken) on my car for about 35,000 miles and nearly 5 years , most of the time its putting LESS fuel into the engine because the economy went up after fitting it

It will be adding more fuel per stroke, it's how they work.

The economy gains are due to using higher gears, better efficiency and possible economy gauge corruption.

 

[maddog]

If the mpg goes up then its using less fuel you cant have it both ways

The car also smokes less on full throttle than it used to so there is clearly less unburnt fuel in the exhaust

 

[Ratz]

If the mpg goes up then its using less fuel you cant have it both ways

The car also smokes less on full throttle than it used to so there is clearly less unburnt fuel in the exhaust

If you go to the Diesel Power website they explain the way their system works as follows:

"Because of the very high compression ratio of diesel engines, typically 20:1, the cylinders contain more air than is needed for normal operating conditions. By slightly increasing the pressure at which fuel is injected we make better use of ALL the air available which dramatically increases both power and torque. Also because the engine is now operating more efficiently you will need to use less throttle for the same conditions, hence the engine is more fuel economical."

 

[tlzeebub]

According to DPT the box for my car lengthens the amount of time the injectors are open hence more fuel, and on the cdi engine it increases the fuel pressure to the injectors, more fuel again.

 

[Dieselman]

If the mpg goes up then its using less fuel you cant have it both ways

The car also smokes less on full throttle than it used to so there is clearly less unburnt fuel in the exhaust

To get less fuel just back off hte accellerator pedal.