DMS Remap

[weyzi]

hi all

had a 330d dms and made a big difference to power over standard thinking of getting csl remaped anyone know if its worth doing?

[shimmy]

hi all

had a 330d dms and made a big difference to power over standard thinking of getting csl remaped anyone know if its worth doing?

ive had a few on the CSL over the years

most werent worth the money tbh, as you wont get much power out of it at all. 10-15bhp max BUT if you get the right one these days you can get certainly a little bit of power, better drivability, more even torque curve pulling through to the red line better as well as delimit and memory sport extras

nothing like the advantages you get on a oil burner turbo though!

[weyzi]

ive had a few on the CSL over the years

most werent worth the money tbh, as you wont get much power out of it at all. 10-15bhp max BUT if you get the right one these days you can get certainly a little bit of power, better drivability, more even torque curve pulling through to the red line better as well as delimit and memory sport extras

nothing like the advantages you get on a oil burner turbo though!

cheers shimmy for info

[Nords]

Matt, are you talking about the 330d or CSL with +40bhp at the top; I'm assuming the 330d although the 6200 rpm suggests the CSL. If the CSL, someone has been pulling your chain!

All newish diesel or petrol turbos can produce great results from a remap, a naturally aspirated, high output engine like the S54 won't give anything at peak, however just as Shimmy says, better drivability and possibly torque lower down.

Probably the main advantage (for trips to the ring etc), is the removal of the limiter. Most CSL remaps will remove this, if done by the factory.

[shimmy]

I agree that modern Turbo Diesels respond really well to remaps however I can vouch for DMS's re-map on a CSL as it's a very well written program and minimum 19 BHP gains are available throughout the range + an amazing 40 BHP gain :supz: (from standard) @ 6200 rpm, which is clearly noticeable from behind the wheel. :whistle:

Matt

can't wait till Wednesday to see how your 395bhp CSL pulls away!

[_Nathan_]

Lol @ minimum 19bhp everywhere in the rev range, how much extra torque is required for 19bhp at idle?

[shimmy]

Lol @ minimum 19bhp everywhere in the rev range, how much extra torque is required for 19bhp at idle?

Nathan you unbeliever!

Matts got graphs to prove it!

[_Nathan_]

Nathan you unbeliever!

Matts got graphs to prove it!

Well at 900rpm you'd need an extra 110Lb/ft to get 19bhp :whistle:

[shimmy]

Shimmy m8... mines only 379 BHP :whistle:

But you said it had a massive 40bhp gain Matt, :smokin:

[_Nathan_]

@ 6200 rpm all standard, health CSLs are producing around 320 bhp. U do the maths :whistle:

Are you claiming 360bhp @ 6200rpm?

[_Nathan_]

So it is making 280lb/ft at 6200? Impressive. Still think your earlier statement needs amending :blalalala:

[_Nathan_]

RR graphs are bollocks, don't trust any of them, even if they say 334 bhp @ 6200 it means nothing as they can be frigged.

Main thing is you are happy that it drives better, still think that your 19bhp everywhere statement is wrong

[shimmy]

Everywhere and anywhere!

[AlexGTT]

I'm sorry but I don't have much faith in chassis dyno's. Seen and had way too many tall stories on my own cars over the years. Great tool for checking safety, working on and setting up after market ECU's and generally producing safe mapps in relation to AFR's, ignition plots, etc.

But as far as power figures are concerned, they are just a good reference to progress made on a given day of mapping work. The actual figure I always take with a pinch of salt.

You could knock me down with a feather if you actually achieved 40bhp difference in one point of a power graph on an N/A engine without standalone ECU such as Motech and feckin' fortune of internal work. A turbo motor, sure, that's easy but N/A circa 340-360bhp engine..............no way unless it was deliberately de-tuned. I don't doubt your graph but there's a very easy way to make it look like that and the mind is a very powerful tool when it's convinced of something.

Besides, a healthy CSL will show about 320-325bhp and about 275ftlb at 6,200rpm anyway.

[_Nathan_]

Just admit it doesn't make 110lb ft more than a standard map at 900rpm and I'll leave you alone

I also think the on track stuff is so dependant on corner exit that it isn't that useful a comparison, my standard map car had gained on remaped cars on the straights and also been left by other standard mapped cars. Some "reputable" tuners maps have been shown at other places to have removed power low down to give the impression of more power further up and in fact were worse that the stock map, yet the original graphs from the remapping session showed a gain hence my distrust.

At the top end we are talking about a roughly 5% difference in power which is too slight to be conclusive in a drag race IMO. Worn tyres with smaller circumference have a difference on the effective gearing, you can have a 3% difference in car weight just through petrol levels etc etc, just too many variables.