1M Coupe DMS remap ..........Any experiences ?
Discussion
ChrisBuer said:
My car is having an upgraded intercooler fitted on Monday (mid-pipes are already fitted) and will be going back to DMS the same day for a re-tweak.
It'll be interesting to see if they can liberate any more power. I'll report back next week
Which intercooler are you going for ? Am tempted to upgrade mine too...It'll be interesting to see if they can liberate any more power. I'll report back next week
Kananga said:
Which intercooler are you going for ? Am tempted to upgrade mine too...
I've got a Forge FMIC
http://www.forgemotorsport.com/content.asp?inc=pro...
terryb said:
Chris, how does the car feel now and what effect does the mid pipes have on the sound?
In a word - FAST!It feels more responsive, holds boost longer and just feel generally stronger throughout the rev range.
The mid-pipes have changed the sound slightly. There is more of a metallic, "straight through" sound to the car now and it gurgles more when you pop a few revs
For the cost of doing it, I think it's a worthwhile upgrade. I have also changed my mind about swapping the intercooler. I had no intention of swapping it originally but one came up at a good price so I thought "why not".
Rob was impressed and I think I can also say surprised at the improvement both of these small mods made. The car now feels perfect and I have no intention of tuning any further. I'm really very pleased with it indeed!
Did you do a dyno run when the car was standard? If yes what did you get, circa 350-360 bhp? Seems that standard cars put out more than the stock 335 bhp quoted. Am I reading the graph correctly that your car puts out 480 ft lbs of torque (vs 332 ft lbs standard = + circa 150 ft lbs / 45% increase!)? With those kind of increases your car must feel substantially quicker than a standard car and the standard car feels seriously quick anyway!!
ChrisBuer said:
In a word - FAST!
It feels more responsive, holds boost longer and just feel generally stronger throughout the rev range.
The mid-pipes have changed the sound slightly. There is more of a metallic, "straight through" sound to the car now and it gurgles more when you pop a few revs
For the cost of doing it, I think it's a worthwhile upgrade. I have also changed my mind about swapping the intercooler. I had no intention of swapping it originally but one came up at a good price so I thought "why not".
Rob was impressed and I think I can also say surprised at the improvement both of these small mods made. The car now feels perfect and I have no intention of tuning any further. I'm really very pleased with it indeed!
It feels more responsive, holds boost longer and just feel generally stronger throughout the rev range.
The mid-pipes have changed the sound slightly. There is more of a metallic, "straight through" sound to the car now and it gurgles more when you pop a few revs
For the cost of doing it, I think it's a worthwhile upgrade. I have also changed my mind about swapping the intercooler. I had no intention of swapping it originally but one came up at a good price so I thought "why not".
Rob was impressed and I think I can also say surprised at the improvement both of these small mods made. The car now feels perfect and I have no intention of tuning any further. I'm really very pleased with it indeed!
SRM355 said:
Did you do a dyno run when the car was standard? If yes what did you get, circa 350-360 bhp? Seems that standard cars put out more than the stock 335 bhp quoted. Am I reading the graph correctly that your car puts out 480 ft lbs of torque (vs 332 ft lbs standard = + circa 150 ft lbs / 45% increase!)? With those kind of increases your car must feel substantially quicker than a standard car and the standard car feels seriously quick anyway!!
Standard the car produced 349.9bhp and 402lb.ft torque. Don't forget that the standard car on paper is 332lb.ft without overboost but with overboost it's 369lb.ft. After just a remap it went up to 401.4bhp and 480lb.ft torque
Then with the intercooler installed and secondary cats removed it produced 431.4bhp and 480lb.ft torque.
The torque is capped as DMS said that it would be up at around 530lb.ft if they didn't limit it which may cause unecessary stress.
The car now feels very quick indeed. There is power everywhere and it feels like it holds strong boost all the way through the rev range. On the drive back from DMS I pretty much left it in 6th gear the whole time on the motorway as you don't need to change down. I've not yet floored it in any of the gears because you only need use a 1/4 or 1/2 throttle and you'll be making rapid progress.
Personally speaking, it's as quick as I'd want or need a road car to be. God knows what owners of big powered supercars think!
Edited by ChrisBuer on Friday 13th July 22:17
Edited by ChrisBuer on Friday 13th July 22:18
ChrisBuer said:
Standard the car produced 349.9bhp and 402lb.ft torque.
After just a remap it went up to 401.4bhp and 485lb.ft torque
Then with the intercooler installed and secondary cats removed it produced 431.4bhp and 485lb.ft torque.
The torque is capped as DMS said that it would be up at around 530lb.ft if they didn't limit it which may cause unecessary stress.
The car now feels very quick indeed. There is power everywhere and it feels like it holds strong boost all the way through the rev range. On the drive back from DMS I pretty much left it in 6th gear the whole time on the motorway as you don't need to change down. I've not yet floored it in any of the gears because you only need use a 1/4 or 1/2 throttle and you'll be making rapid progress.
Personally speaking, it's as quick as I'd want or need a road car to be. God knows what owners of big powered supercars think!
What's the limiting factor Chris? After just a remap it went up to 401.4bhp and 485lb.ft torque
Then with the intercooler installed and secondary cats removed it produced 431.4bhp and 485lb.ft torque.
The torque is capped as DMS said that it would be up at around 530lb.ft if they didn't limit it which may cause unecessary stress.
The car now feels very quick indeed. There is power everywhere and it feels like it holds strong boost all the way through the rev range. On the drive back from DMS I pretty much left it in 6th gear the whole time on the motorway as you don't need to change down. I've not yet floored it in any of the gears because you only need use a 1/4 or 1/2 throttle and you'll be making rapid progress.
Personally speaking, it's as quick as I'd want or need a road car to be. God knows what owners of big powered supercars think!
Gearbox? Driveshafts? Snapping the bodyshell clean in two?
Did they say?
cheddar said:
What's the limiting factor Chris?
Gearbox? Driveshafts? Snapping the bodyshell clean in two?
Did they say?
They just said that they liked to keep things safe and not over stress the components. You could go further but to be honest the car doesn't need any more. Using it on the public roads it has plenty of oomph anywhere in the rev range in any gear. But best of all the map feels very factory like. In other words it's smooth, linear, doesn't feel aftermarket at all. The power delivery is the same as stock....it's just that its a lot more powerful Gearbox? Driveshafts? Snapping the bodyshell clean in two?
Did they say?
Essentially all I've done is remove a bit of restriction with the straight through midpipes (a BMW part which costs about £250) and improve the cooling efficiency with the Forge intercooler. DMS have then just tweaked their map and the results are as you see
Edited by ChrisBuer on Friday 13th July 22:26
clived said:
ant man said:
Have a look at Evolve's tuning products for the 1M too before deciding. There was a fairly comprehensive review in BMW Car Magazine (June edition I think) and it got top feedback from the mag's editors.
That was my car ;-)
bennyboysvuk said:
What's the traction like with so much torque? Is it willing to spin up the wheels quite a lot in the dry or does it just find traction and throw you up the road?
In the wet last night I couldn't floor it in the first 4 gears as it would just snake and spin the back wheels up. In the dry, it'll spin up in the first three gears if your aggressive. I tend to fade the throttle in and floor from 3000rpm onwards rather than from lower rpm as there is a big dump of torque low down. For example in the damp last night, into third, half throttle until 3000rpm, floor it, little blink of the traction light....4000...5000rpm, another little blink on the traction light....6000rpm change gear at 6500rpm. Into fourth and it's fine. In the dry it wouldn't spin up in third as much.
However I am told that traction is a lot better with the newer Michelin Pilot Super Sport tyres and I'll change for them when my current tyres need replacing.
Edited by ChrisBuer on Tuesday 17th July 17:31
ChrisBuer said:
In the wet last night I couldn't floor it in the first 4 gears as it would just snake and spin the back wheels up. In the dry, it'll spin up in the first three gears if your aggressive. I tend to fade the throttle in and floor from 3000rpm onwards rather than from lower rpm as there is a big dump of torque low down.
For example in the damp last night, into third, half throttle until 3000rpm, floor it, little blink of the traction light....4000...5000rpm, another little blink on the traction light....6000rpm change gear at 6500rpm. Into fourth and it's fine. In the dry it wouldn't spin up in third as much.
However I am told that traction is a lot better with the newer Michelin Pilot Super Sport tyres and I'll change for them when my current tyres need replacing.
That sounds like a LOT of fun. For example in the damp last night, into third, half throttle until 3000rpm, floor it, little blink of the traction light....4000...5000rpm, another little blink on the traction light....6000rpm change gear at 6500rpm. Into fourth and it's fine. In the dry it wouldn't spin up in third as much.
However I am told that traction is a lot better with the newer Michelin Pilot Super Sport tyres and I'll change for them when my current tyres need replacing.
Edited by ChrisBuer on Tuesday 17th July 17:31
ChrisBuer said:
However I am told that traction is a lot better with the newer Michelin Pilot Super Sport tyres and I'll change for them when my current tyres need replacing.
Ditto the Michelin Pilot SS, had them put on the rears and they have definately improved traction all round. Need to run a few extra psi because they have softer tyre walls compared to PS2.Edited by ChrisBuer on Tuesday 17th July 17:31
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