ECU Remapping

[Dieselman]

what should be the target EGT?

As cool as possible and certainly not past 1100 C when under full load. You wouldn't want to drag a caravan uphill showing 1100 C for long.
Cruise temps will be in the 400-700 C range.

 

[Dieselman]

Also (Dieselman?) what effect do the changes have on the particle filter systems on the EU4 cars?

Good question. The FAP will certainly have to work a lot harder and may block.

 

[jdrrco]

My W211 E270 CDI (EDC16) has recently been remapped by Celtic Tuning and boy, what a difference!

I deliberately asked for an economy-prioritised remap, rather than a power one, but the power is huge too. They reckon they can increase the 270CDI ECU from 177bhp to 230bhp and from the response in mine, I have no problem believing it.

All turbo lag has gone, as has auto-gearbox lag (you know what I mean) and the pick up is steady, sustained and smooth. My Subaru Outback had 250bhp but it was delivered in a huge chunk in the small of your back through a notchy auto box. The remapped E is fast, very fast, but so, so smooth.

Mpg has improved by about 9-11% (if I'm not playing too hard) which is great news too with BP Ultimate at 105.9p per litre up here. Just looking forward to Loire Valley wine trip in 2 weeks with long French N-roads and cheap diesel!

It took a while to get the appointment sorted as one of the directors has been in and out of hospital over the last few months, but the guy who did the remap was very friendly and explained what was going on as he did it and showed me the new map on screen, having saved 2 copies of my original map, just in case.

I would certainly recommend them and I got an amazingly good deal on the price (pm me for more info if you want to know more), partly because of having to wait but also for mentioning this forum. Although I doubt they would match the deal they did me, it's worth squeezing a little if you can!

 

[stats007]

Do a search for Celtic Tuning - we did approach them for a group discount but they declined to contact us.

 

[jdrrco]

Do a search for Celtic Tuning - we did approach them for a group discount but they declined to contact us.

Not true. Here's the thread where they offered a group discount.

http://www.mbclub.co.uk/forums/showthread.php?t=25545

 

[stats007]

It's perfectly true - it seems offering one and carrying it out is another matter. A month after that thread we approached them with a list of 10 cars - they still haven't replied. It was discussed here.

 

[jdrrco]

It's perfectly true - it seems offering one and carrying it out is another matter. A month after that thread we approached them with a list of 10 cars - they still haven't replied. It was discussed here.

If you actually read the thread you have linked to, you will see that Celtic were not approached with a list of 10, but by 2 individuals, me and gotamerc.

As I said in my earlier posting, their MD has been recovering from chemotherapy and so, had not been good at getting back to me or gotamerc. However, I persevered with them, got my car remapped by them and saved over £200 in the process.

Sometimes a little patience pays off!

 

[stats007]

I myself approached them with the same list of 10 cars that I had approached Torquing BHP with. I started that thread and spent some weeks talking to members about their cars and trying to get different discounts - originally with Torquing BHP and then with Celtic after speaking to gotamerc. I still get calls from Torquing BHP regarding new models they can do - Celtic told me they'd get back to me and since then they haven't. I know where I'd place my business!

 

[jdrrco]

I myself approached them with the same list of 10 cars that I had approached Torquing BHP with. I started that thread and spent some weeks talking to members about their cars and trying to get different discounts - originally with Torquing BHP and then with Celtic after speaking to gotamerc. I still get calls from Torquing BHP regarding new models they can do - Celtic told me they'd get back to me and since then they haven't. I know where I'd place my business!

Fair enough. Personally I'd rather have the extra £225 in my pocket!

 

[stats007]

You get what you pay for - though it sounds like they were generous towards you. Diesels are much easier to tune than NA petrol engines - maybe that's why they weren't so keen to quote as the list only had 3 diesels in it?

 

[se97mlm]

As cool as possible and certainly not past 1100 C when under full load. You wouldn't want to drag a caravan uphill showing 1100 C for long.
Cruise temps will be in the 400-700 C range.

Are you talking about temperature before the turbine? If so, then 830°C is the absolute limit.

 

[Dieselman]

Are you talking about temperature before the turbine? If so, then 830°C is the absolute limit.

Oops sorry, I meant farenheight, and actually 1300F although some tuners claim that upto a Max of 950C.(1700F).

From steves auto pages.

"With roughly 35 diesel turbo charged vehicles passing through our workshops countrywide every day, we are well aware of what is happening to components on or inside a engine which are exposed to excessively high EGT's for long periods of time.
We also know that 90% of diesel turbos today run with EGT's around 830ºC, some even as much as 950ºC.
People who tend to be in a hurry or those who tow or even drive with heavy loads are the ones who are most affected by high EGT's.
The worst is that the engine won't necessarily fail after only a few incidents of high EGT; in our experience we find the vehicles to show their damage a at higher mileage although destruction starts at the very first exposure."

As I've always ssaid, if you modify the fuelling of a diesel you MUST fit an EGT gauge.

 

[mstar01]

i have a c250td, and i got a reply from celtic tuning "unfortunatly we cannot remap your car"

short and sweet.

any reccomended tuners? in the midlands?

 

[mstar01]

i pressed why now i got this reply:

the reason is due to the age of the vehicle. Pre 1999 ecu's are unable to be
remapped due to the lack of communication modules within the hardware. We
can gain 35bhp 65lbft torque easily but would require the ecu to be chipped.
If you wish to have it chipped by all means we can arrange that for you.

We operate our chip tuning service via postal/courier systems and would
require you to be without your vehicle for 3 days in total. The cost is £320
all inclusive.

I am not technical guys but basically are they saying they would replace the ECU? is this safe compared to the tuning box method?

 

[jdrrco]

I'm no techie either, but what I've had done is a remap, where they plug a laptop pc into the ECU and talk to it. As I understand it, for older cars, this isn't always an option, so instead they can "chip" them, where they remove the ECU circuit board and solder an extra microchip onto it. They aren't replacing your ECU, just altering it slightly.

It is usually not a problem, as it's been done for years, but the mail-order idea seems a bit of a faff. I suggest you look up "superchips" on Google and find a place local to you where they can do it while you wait. It's fun to watch too!

 

[mstar01]

yes i am a bit puzzled about the "postal/courier systems" they said... however i am not sure if the gains are worth the potential risks? maybe no risk at all, but is this a safe method?

Also JDRRCO how did u do urs? u must know what ur doing if you did it urself

 

[stats007]

Mail order would mean your car is out of action for the duration. Superchips will do 'piggybacking' using a mobile service but whether the map is any good is another matter.

 

[blassberg]

yes i am a bit puzzled about the "postal/courier systems"

maybe you post your car to them?

 

[jdrrco]

Also JDRRCO how did u do urs? u must know what ur doing if you did it urself

 

[mstar01]

jdrrco i think your right i got a very confusing email from angel tuning, they said "you do not have a modern "common rail" CDi Mercedes, its the older "turbodiesel" with a mechanical pump, the gains, even if the ECU could be remapped would be minimal."

where superchips said it can be done. how confusing arhhhhhh