400hp w210, om606 Turbo or 320cdi?

GT2256V

114

08-06-2011, 01:21 AM #122

Hi Guys,

Delighted to see this thread alive once again.....the more I look at it....the more I realise we're going to be tuning CDI's for the next 40 years!

I've been busy for the Summer as well but in the meantime I decided to perform a few modifications on my wife's W210 E320 CDI estate(Station wagon)

(1) To decat the engine.

(2) To remove the EGR(This has to be done electronically as well as being blanked physically). I got this information from another forum.

These two systems are sapping at least 40-50bhp from our CDI's....especially as they get older and more clogged up with EGR gunk.

Here are the results I wrote about on another forum;

"My wife has a W210 estate E320Cdi....fantastic car at 217,000 miles but has had the egr system cleaned a few times in its life. As the car regularly does stop/start urban running about with kids etc...the egr system is operating frequently and subsequently blocks/gums up every 18-24 months without fail!

Several times we have tried to blank/bypass/disable the egr,but the car always defaulted to limp home mode,thereby preventing us from disabling the system.

Anyways...The first job I did to the car was remove the three cats/DPF filters....then I followed the instructions on this thread and made up and installed the shunt.....then I replaced the thermostat(engine running cool)...then I replaced a leaking injector washer (#2)...and finally I poured some Lucas fuel conditioner/cleaner into the fuel tank.

And the results......totally transformed the car into a high performance machine!....I took it on a quick 260 mile round trip last Monday night and noticed the following.

(1) The car performs like a scalded cat! and pulls like a steam train.

(2) I ran at 87mph on the cruise control on the motorway and around 70mph on the national roads....The car returned 40.1 mpg....its previous average was around 29mpg.
With 260 miles clocked up,I still had in excess of half a tank of fuel when I returned home.

(3) The engine climbs to operating temp quickly(85 degrees) and stays steadily there all day long.

(4) The turbocharger spools earlier at low rpm and this is slightly more audible from the more pronounced whilstle from the exhaust system as the engine delivers prodigious amounts of extra torque earlier on in the rev range.

(5) I feel the main improvement in performance was due to it being 'decatted' and allowing the engine to 'breath' better.....But I also feel the main reason the cats were blocked up was due to the egr system leaving its gunge through the engine

(6) Not a tint of smoke whatsoever behind as I accelerate the car up a steep hill to over 100mph. On a local steep hill which I normally climb at 30mph...the car will now storm up there at 65/70mph with the traction control system cutting in as the back end starts to break loose.

(7) The car idles and runs better/smoother.

(8) I now have a very happy wife!"

These are two modifications we should complete with our CDI along with any other injectors,turbo,intercoolers etc....

" It is far easier to get forgiveness rather than permission"

Riverstick