friend, please get a hold of what is direct injection, and why you are able to run lean on direct injection with HIGHER COMPRESSION RATIO, because the burn in the combustion chamber is clean , as all the valve closes before any burning happens, that also result in a cooler combustion chamber. That is why the new turbos run high compression ratio with lean a/f ratio,
As for the MSS65 ecu, its a tripple processor unit that is very capable of doing what its meant to do, over capable i would say
Cheers, don't get me wrong too :P
Quote:
Originally Posted by DaveCM5
It's true that the knock control on the M5 ECU is much more refined, but it was designed with the assumption of a naturally aspirated motor. And also, it takes more than a good knock management system to keep an engine from pre-ignition if it has too much dynamic compression.
Do you think that BMW will use a 12:1 or greater compression ratio on the F10 M5 turbocharged engine? I doubt it. The twin turbo 550i has a 10:1 ratio, which is still kind of high, but that probably reflects the more sophisticated engine management unit.
Don't get me wrong. I think your kit is a very nice supercharger kit, and it develops an outstanding amount of power. And with 130 kits installed on M3s as you suggest, with no reported problems, that probably means your kit is well designed and thought out.
But as you pointed out, we're not talking about a $4000 chevy motor here. I just think that since I doubt you'll be replacing someone's S85 engine for free if it gets damaged from pre-ignition with your blower installed, people should be made aware that for maximum durability the proper method of supercharging an engine is to lower the static compression ratio in order to maintain a dynamic compression ratio less than 13 or 14:1, otherwise you could have a diesel (ie: pre-ignition).
Of course, the people who are going to pay for your blower to put on thier M5/M6 for the most part probably have enough money that it's not much of a concern for them anyways. I wish I was so lucky so as not to be concerned.
-Dave
PS to JontySafe: If I lived in a place like Norway where the temperatures were cold alot of the time I might not worry as much. But I live in Florida, where the temperature is 95'F most of the time. Intercoolers struggle here.
As for temperature, i stay in a place whereby its hot all long (no 4 season, only hot and rain) and currently is 33degrees celcius outside. by simply driving on the track with full throttle will bring the m5 to engine oil overheat in 1 lap. and well, i am signing up for the ess kit when it comes out :P
As for temperature, i stay in a place whereby its hot all long (no 4 season, only hot and rain) and currently is 33degrees celcius outside. by simply driving on the track with full throttle will bring the m5 to engine oil overheat in 1 lap. and well, i am signing up for the ess kit when it comes out :P
We recommend the RPI oil cooler for sever temperature track duty.
If I was to purchase the flashtune can the map for this kit in the future be emailed and used via the flash programmer?
You can use the ESS DirectFlash unit to load new calibrations after the kit is installed (race fuel, headers, etc), but the ECU has to be sent in to us when the kit is first installed as the S85 SC runs a different ECU operating system especially designed for the operation of this kit.
friend, please get a hold of what is direct injection, and why you are able to run lean on direct injection with HIGHER COMPRESSION RATIO, because the burn in the combustion chamber is clean , as all the valve closes before any burning happens, that also result in a cooler combustion chamber. That is why the new turbos run high compression ratio with lean a/f ratio,
As for the MSS65 ecu, its a tripple processor unit that is very capable of doing what its meant to do, over capable i would say
Cheers, don't get me wrong too :P
I did some reading on Direct Injection. I stand corrected. I guess that's the new thing, and you are correct that it allows higher compression ratios. Audi has a 10.5:1 supercharged motor and Nissan apparently has a 13:1 supercharged motor (albeit a 1.2L). That's very impressive. I can't wait to see how your supercharger setup works out.
You can use the ESS DirectFlash unit to load new calibrations after the kit is installed (race fuel, headers, etc), but the ECU has to be sent in to us when the kit is first installed as the S85 SC runs a different ECU operating system especially designed for the operation of this kit.
Hi Asbjorn,
This is a concern for both M5aud and myself regards shipping the ECU (we both plan on have the SC kit fitted at the same time/same place), if any thing happens to our DME ecu's we could both have a nightmare getting our cars running again due to the sercuirty systems in place and the marrage of other ecu's in the car to it. Can the ECU be devorced from the car on removel so if they did go astray we could program a replacement to get back up and running?
Can the TCI (SMG trans ECU) be flashed here or does this need to come back to you as well?
One way around it might be to get you over after the installation is complete on both cars then fly you out, sign off the install and program?
This is a concern for both M5aud and myself regards shipping the ECU (we both plan on have the SC kit fitted at the same time/same place), if any thing happens to our DME ecu's we could both have a nightmare getting our cars running again due to the sercuirty systems in place and the marrage of other ecu's in the car to it. Can the ECU be devorced from the car on removel so if they did go astray we could program a replacement to get back up and running?
Can the TCI (SMG trans ECU) be flashed here or does this need to come back to you as well?
One way around it might be to get you over after the installation is complete on both cars then fly you out, sign off the install and program?
Regards
Jay
Losing control units using reputable freight companies is almost unheard of, and if it ever should happen you can simply go to BMW and order new ones paid for by freight insurance. It is no problem at all to replace the control units in the E60 M5. We ship ECU's all over the world on a daily basis, and we have never had any significant freight issues.
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