tDR Posted March 22, 2012 Share Posted March 22, 2012 Just ordered up one of these as my new daily driver, have gone for the Estate in Executive SE trim with maximum family oriented practicality in mind for Scuba diving trips and cross Europe trips Skiing etc. Hoping it'll do the job well with lots of comfort and shouldn't leave me wanting on the gadget front as comes with decent standard kit. One potential frustration though, it's replacing my Alfa 159 Ti which has a 210 BHP / 320 lb/ft torque 2.4 litre 5-cylinder turbo diesel lump. The Merc has a 170 BHP / 295 lb/ft torque 4-cylinder 2.1 litre twin-turbo diesel lump, so a chunk down on power though only slightly down on torque thanks to the twin-turbo's. I noticed when ordering that the E250 CDI looks to have the exact same engine hardware and that it may be just different ECU mapping that sees them put out 201 BHP / 369 lb/ft torque, which would likely feel faster than my Alfa with the extra torque. Does anyone have any experience of remapping these (best place to go, likely gain etc.) or knowledge of the potential hardware differences between the E220 and E250 CDI that could be a limitation? There are a number of off the shelf diesel tuning 'boxes' around that plug into the engine loom in line with the fuel rail and basically up the fuel pressure to see gains - I tried one on my Alfa and didn't like how crude it was, yes it felt more powerful but it took away the creamy smoothness the car had standard so I junked it as it made it have what felt like some gaping holes in the power band which in turn made it feel more laggy and not so nice to drive. Would rather have a proper remap or at least a more elegant solution than whacking the fuel pressure up to 11 spinal tap style, though worried about traceability by Mercedes when in for servicing and resultant warranty implications. Thoughts on a postcard! Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
johnny g Posted March 22, 2012 Share Posted March 22, 2012 Give Simon at e-Maps a call. He did my X6 at my house. Very professional. If the Merc is anything like BMW, then it'll be a smidge more than the ECU. For example, the 118d and the 120d both have 2.0d engines. ECU and injectors are different. Maybe Merc are like that too? Simon will 90% know, and get you an answer. Quote Link to comment Share on other sites More sharing options...
sideexitsupra Posted March 22, 2012 Share Posted March 22, 2012 Sorry to tell you the 250CDi is a twin turbo rather than the single in the 220CDi. I have a C250CDI. I think DMS do a 200+ remap for the 220. Have seen it on an advert but its not on their website. Unfortunately no-one seems to be doing anything for the 250CDi as far as I can see. Quote Link to comment Share on other sites More sharing options...
Tyson Posted March 22, 2012 Share Posted March 22, 2012 Sorry to tell you the 250CDi is a twin turbo rather than the single in the 220CDi. I have a C250CDI. I think DMS do a 200+ remap for the 220. Have seen it on an advert but its not on their website. Unfortunately no-one seems to be doing anything for the 250CDi as far as I can see. The 220 is a twin turbo.... Quote Link to comment Share on other sites More sharing options...
ozz Posted March 22, 2012 Share Posted March 22, 2012 I used a plugin box on my sorento diesel - there was a definite performance increase and you could switch it pretty much on the fly however it did cause issues, sometimes not running right, other times cutting the engine if you revved too high (once it did it whilst I was overtaking, another time in the fast lane of the motorway, very scary). Made the car better for towing as well but eventually we turned it off for safety. If I was to do it again I'd go for a remap. Quote Link to comment Share on other sites More sharing options...
Thorin Posted March 22, 2012 Share Posted March 22, 2012 I thought the 220 was only single turbo, OM611 engine? Quote Link to comment Share on other sites More sharing options...
Tyson Posted March 22, 2012 Share Posted March 22, 2012 I thought the 220 was only single turbo, OM611 engine? No the 200 is a single but the 220 and 250 are both twin turbos. This can easily be checked on MB website if you still don't believe me. Quote Link to comment Share on other sites More sharing options...
CJ Posted March 22, 2012 Share Posted March 22, 2012 No the 200 is a single but the 220 and 250 are both twin turbos. This can easily be checked on MB website if you still don't believe me. I see you have taken off your Supra anorak today and replaced it with a MB one Quote Link to comment Share on other sites More sharing options...
Thorin Posted March 22, 2012 Share Posted March 22, 2012 No the 200 is a single but the 220 and 250 are both twin turbos. This can easily be checked on MB website if you still don't believe me. Edit: hmmm, seems it does say it's a twin. Thought it was the same engine as in the Sprinter which I'm pretty sure was only single, maybe that was the older model. Quote Link to comment Share on other sites More sharing options...
Tyson Posted March 22, 2012 Share Posted March 22, 2012 I see you have taken off your Supra anorak today and replaced it with a MB one Never !!!! I just put it over the top Quote Link to comment Share on other sites More sharing options...
dan294 Posted March 22, 2012 Share Posted March 22, 2012 The first facelift 2007> 220CDi's were single Turbo I believe. The new ones are twin turbo. They are both on Siemens / Delphi injection systems, so not particularly tuneable compared to the earlier Bosch systems. Mercedes have had issues with Injectors on the Siemens systems as well. Moreso on the 250CDi I believe though. Quote Link to comment Share on other sites More sharing options...
tDR Posted March 22, 2012 Author Share Posted March 22, 2012 Give me some credit, I did do a little homework I know it's a TT. I'd read about the injector recalls saying many were replaced under warranty - something to do with glue on seals leading to leakage. Sounds like I can gun for 250 CDI levels of power / torque with a remap, though the injectors in either model may be a limitation with going higher? I did see DTUK have a tuning box module that also does boost pressure rather than just fuel pressure - any feedback here? They reckon E220 to 210 BHP / 361 lb/ft with this module and also claim the E250 will go to 240 BHP / 433 lb/ft. If the hardware is the same between the models of E-Class it makes me wonder could the E220 not go to these higher figures? DTUK also offer a new 'revolutionary' pedal box module - basically fudges drive by wire throttle signals to ramp up acceleration levels for a given pedal position, to me seems a bit of a gimmick as is effectively the same as having a short travel accelerator pedal as far as I can figure out?!? Pendle Performance is recommended on MB World forum for Merc remaps, though don't list this car and probable gains on their website - have enquired with them and DMS who were the same story. Will check out e-maps. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
tDR Posted March 24, 2012 Author Share Posted March 24, 2012 None of the remappers have gotten back to me for whatever reason - Pendle were the only ones to respond to my enquiry, asking for more info on which model I have, then went radio silent also. Looks like a DTUK fuel and boost pressure tuning box module is my only real option so far. Quote Link to comment Share on other sites More sharing options...
dan294 Posted March 24, 2012 Share Posted March 24, 2012 None of the remappers have gotten back to me for whatever reason - Pendle were the only ones to respond to my enquiry, asking for more info on which model I have, then went radio silent also. Looks like a DTUK fuel and boost pressure tuning box module is my only real option so far. A lot of the mappers will stuggle with it being a Siemens ECU. I've seen 212BHP and 370lbs/ft from a Single turbo 220CDi on our rollers with a different tuning module on before. Quote Link to comment Share on other sites More sharing options...
tDR Posted March 24, 2012 Author Share Posted March 24, 2012 Which module were those results with? Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted March 24, 2012 Share Posted March 24, 2012 Does dude still do diesel remapping? Quote Link to comment Share on other sites More sharing options...
sideexitsupra Posted March 24, 2012 Share Posted March 24, 2012 The 220 is a twin turbo.... My bad fella. The difference between the 220 and 250 is huge. My car sprung an oil leak after a couple of weeks and I was given a 220 as a loner. It was noticeably slower, rule of thumb would say it felt about 10% down. Which pretty much equates to the difference. My biggest gripe with the drive train is the auto box. It is too keen to kick down when all you want to do is ride on the crest of the torque. Have started knocking it into manual mode on the motorway which seems to solve the problem. Quote Link to comment Share on other sites More sharing options...
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