Tuning Box + Rolling Road

[230K]

Dear All,
I have a E220 cdi first registered 27/08/99.
what BHP do I have ?

I fancy one of those box of tricks.

Thank Merc 808

Obviously not enough


230K

 

[vixpy1]

I have ordered one for the E300TD, will report back with findings!

 

[mark.t]

tune box

what with my perky engine from Esso fuel and hopefully a tuning box..better get a slot at runway 1 at manchester airport t

 

[Richard W]

Thanks Charlie, good result yesterday on the Golf!

Sorry to hijack the thread, but I'm pleased with 155bhp from a 115PD Golf, by simply changing a boost control valve and adding a Tunit box!

 

[vixpy1]

Right.. Tuning box fitted to the E300TD.. first impressions very good...

Time to get her on the rollers i think!

 

[mark.t]

the suspense is killing me

 

[vixpy1]

Right.. power at the wheels has risen from 134.3 to 154.4 bhp.. So, from 179bhp to 206 peak bhp..

Torque at the wheels is up 55ft lb' s at 2800rpm... tailing of to a 20ft lb increase at the top end. The actual figs on the torque are a bit off because of the diesel generating max torque at about 1800rpm, with the damn autobox we can't start the run till about 1500rpm, meaning the turbo is'nt spooled by 1800rpm. But both runs were done in the same fashion, so the increase is the same as it would be on the road.

It flys!

Now.. got to work out how to post the graph.

 

[230K]

Hi

How does she drive is there more shove at low rpm? How would it compare to a standard 320cdi?
Are there any flat spots? what miles have you?

Also keep us posted on the mpg i would be very very surprised is the economy is better.

Tandem or tunit?

Sorry about all the questions just excited :bannana: :bannana:

230K

 

[vixpy1]

Hi

How does she drive is there more shove at low rpm? How would it compare to a standard 320cdi?
Are there any flat spots? what miles have you?

Also keep us posted on the mpg i would be very very surprised is the economy is better.

Tandem or tunit?

Sorry about all the questions just excited :bannana: :bannana:

230K

Lots more shove at low rpm, also much more eager to get going! Not driven a 320.. but i would say that it should be comparable.

Will keep an eye on Econamy... rubbish at the mo because i keep ragging it everywhere !

Tamdem tuning box.

 

[Dieselman]

Lots more shove at low rpm, also much more eager to get going! Not driven a 320.. but i would say that it should be comparable.

Will keep an eye on Econamy... rubbish at the mo because i keep ragging it everywhere !

Tamdem tuning box.

Didi thei require hard wiring in and any leads to be cut in the process?

 

[vixpy1]

Didi thei require hard wiring in and any leads to be cut in the process?

Yes, it requires soldering onto the main ECU plug (the big one). I did'nt need to cut any wires, just stripped, spliced and soldered.

 

[230K]

Hi

Interesting that Tandem claims of a bhp increase from 177 to 204 is almost identical to what you got.

They quoted me £249 + £10 next day delivery. Should we try for a club discount folks.

230K

 

[vixpy1]

Update.. With the chip the car is Sooooooo much fun, you can really hustle it down lanes now..

Great!

 

[glojo]

Update.. With the chip the car is Sooooooo much fun, you can really hustle it down lanes now..

Great!

I don't want to appear a kill joy, but all the country lanes I have experience of are not areas where you want to 'hustle'.

Remember the old adage,

Always drive at a speed that you can stop in the distance you can see to be safe!

Good luck with the chip,
John

 

[230K]

Update.. With the chip the car is Sooooooo much fun, you can really hustle it down lanes now..

Great!

Some of us understand

Is there any more smoke than before? Sounds like fun i am so tempted but with 200000 miles on the car i am afraid of killing her, what do you think vixpy1?

230K

 

[vixpy1]

Some of us understand

Is there any more smoke than before? Sounds like fun i am so tempted but with 200000 miles on the car i am afraid of killing her, what do you think vixpy1?

230K

Under full load there is more smoke, but thats because i've adjusted it to give alomst full power, you could turn the box down a touch and there is no more smoke than normal. However, chatting to a guy in the industry last week, he said more smoke was not really a bad thing.

200K? I'm not sure, Ask me in 100K

 

[se97mlm]

I am going to throw the cat among the pigeons now and explain why fitting these "tuning-boxes" could cause major problems and expense

The amount of fuel injected into the cylinder is controlled by the length of time the injector is open, and the pressure that the fuel is at. so to get more fuel in, you can either lengthen the drive pulse to the injector or increase the rail pressure.

All the tuning box does is lower the voltage reading from the rail pressure sensor, fooling the ECU into thinking the rail pressure is lower than it is. The ecu then increases the output of the HP pump to increase the rail pressure to what it thinks is the correct value. SO now you have a pressure in the rail much higher than in should be.

Granted, over most of the rail pressure map this is not too much of a problem, but if you drive a lot at 100% load (foot to the floor) and at engine speeds greater than 4000rpm, you run a great risk of breaking your pump. This will put shards of metal into your rail and wreck the injectors. If the pump seizes, it can take the drive components to it as well.

RESULT = 4 figure bill

You have been warned!

 

[230K]

I am going to throw the cat among the pigeons now and explain why fitting these "tuning-boxes" could cause major problems and expense

The amount of fuel injected into the cylinder is controlled by the length of time the injector is open, and the pressure that the fuel is at. so to get more fuel in, you can either lengthen the drive pulse to the injector or increase the rail pressure.

All the tuning box does is lower the voltage reading from the rail pressure sensor, fooling the ECU into thinking the rail pressure is lower than it is. The ecu then increases the output of the HP pump to increase the rail pressure to what it thinks is the correct value. SO now you have a pressure in the rail much higher than in should be.

Granted, over most of the rail pressure map this is not too much of a problem, but if you drive a lot at 100% load (foot to the floor) and at engine speeds greater than 4000rpm, you run a great risk of breaking your pump. This will put shards of metal into your rail and wreck the injectors. If the pump seizes, it can take the drive components to it as well.

RESULT = 4 figure bill

You have been warned!

This may be true for cdi engines but the 300TD which we are chatting about has an engine driven in line pump and 6 (non electrical operated) injectors.



Also vixpy1 is there an adjusting screw on the kit for more or less fueling?

230K

 

[se97mlm]

If you increase the injected quantity on any Diesel engine you will increase the peak cylinder pressure which in turn can lead to melted pistons and valves.

We have had this testing engines on dyno with surprisingly little increases in fuelling (~5mg/stroke)

It is your money though, I only want to share my very real experience as a Mechanical Engineer who calibrates Diesel engines for a living. And to pre-empt the "i know lots of people who have done this without incident" type comments, you always hear of someone's uncle who smoked 60 a day and lived to the grand old age of 90, but it doesn't mean you will too!

 

[glojo]

It is your money though, I only want to share my very real experience as a Mechanical Engineer who calibrates Diesel engines for a living. And to pre-empt the "i know lots of people who have done this without incident" type comments, you always hear of someone's uncle who smoked 60 a day and lived to the grand old age of 90, but it doesn't mean you will too!

Thanks for a very informative input. This forum is very lucky to have this type of input.

Regards,
John

""Some of us understand ""