[DaveH28]

Could anyone tell me what where the extra horses come from on the 1/240s..

I understand bmw hold the 3/440s back so we can spend more on the mppsk.. but then that overshoots the 1/240s..

So is it just a different map on the 1/240s, obviously you get the exhaust aswell on mppsk, which from what I read adds to the power increase too.

Cheers

[Abzynthe]

Its probably a marketing thing as the 140 and 240 are "M-Lites" So they cant have the same power as a regular 3-4 series. But yes, its just a difference in the map basically. The B58 is more than capable of running the MPPSK power without the MPPSK.

[NotGotABimmer23]

I would imagine the exhaust does nothing to increase power, probably just slightly higher boost on the mppsk map than the m-lite map which is in turn a bit higher on boost than the stock 3/440i map.

I have also heard that the m1/240i generally produce near 360bhp stock anyway, so may be exactly the same as the mppsk mapped 3/4.

[225]

Originally Posted by Abzynthe

Its probably a marketing thing as the 140 and 240 are "M-Lites" So they cant have the same power as a regular 3-4 series. But yes, its just a difference in the map basically. The B58 is more than capable of running the MPPSK power without the MPPSK.

Exactly all of us who have/had tuning boxes were seeing 400 and above bhp on stock exhausts on a 340

[DaveH28]

I am thinking about a tuning box myself... got about 9 months before I VT, be nice to have a bit more power and torque while I still have this..

Shame no one can download the bmw mppsk map, in the same vein as the Alpina gearbox software etc

Anyone dyno'd the stock 3/440i's, are they throwing out what they say - 326hp??

[Abzynthe]

Mine stock ran 337.1 and with MPPSK it ran 382.5

[TodmordenLad]

Originally Posted by Abzynthe

Mine stock ran 337.1 and with MPPSK it ran 382.5

[DaveH28]

Originally Posted by 225

Exactly all of us who have/had tuning boxes were seeing 400 and above bhp on stock exhausts on a 340

400hp would be nice...

Which are the best value for money tuning boxes that are safely getting around 400?

Jb4 and dtuk are the ones I've seen lots of good reviews for.. what about racechip.. look similar to the dtuk one

Cheers

[GMT234]

I have JB+, around £200, less than 5 mins install. Gives me 400 hp, love it. No negatives, no codes etc.

[DaveH28]

Originally Posted by GMT234

I have JB+, around £200, less than 5 mins install. Gives me 400 hp, love it. No negatives, no codes etc.

I was looking at that myself, definately on the radar at that price, didn't know it give such high gains though..

[SkyJawa]

Originally Posted by DaveH28

I was looking at that myself, definately on the radar at that price, didn't know it give such high gains though..

Adds around 40bhp and since most m140 dyno at 360 that’s why you can get 400.

[Abzynthe]

Ive been mulling over getting a jb+, but I've heard it can be quite jerky with the MPPSK map

[DaveH28]

Mines stock... reviews read well,
I've never done the remap/tuning box thing before and worry about insurance etc... however the jb+ is very easy to remove and install..

[Hooded]

Originally Posted by SkyJawa

Adds around 40bhp and since most m140 dyno at 360 that’s why you can get 400.

I'd trust BMW figures more than a dyno personally. The stock cars aren't quite quick enough to be pushing 360 in my honest opinion. Likewise I don't believe a stock 340i is nearly 340bhp either

[B58togo]

Originally Posted by Abzynthe

Its probably a marketing thing as the 140 and 240 are "M-Lites" So they cant have the same power as a regular 3-4 series. But yes, its just a difference in the map basically. The B58 is more than capable of running the MPPSK power without the MPPSK.

They're referred to as "M-Lights" compared to true M cars. It has nothing to do with their relationship to a garden variety 3/4 series. In the US, the M240i is rated at 335hp/369ft lbs vs 320hp/332ft lbs in the 340/440, so yes, they can and do have more power than regular 3/4 series.

[creepy coupe]

There are videos on the web of standard M140/M240 pushing 354 BHP / 380 ft/lbs on Surrey Rolling roads dyno. Which is a respectable company to use.

[M3anLantern]

Originally Posted by B58togo

They're referred to as "M-Lights" compared to true M cars. It has nothing to do with their relationship to a garden variety 3/4 series. In the US, the M240i is rated at 335hp/369ft lbs vs 320hp/332ft lbs in the 340/440, so yes, they can and do have more power than regular 3/4 series.

I think you've just disagreed with Abzynthe by stating the effect, for which he was describing the potential cause!

I agree with Abzynthe that it surely is a marketing deal as the 1/2 is an M40i not just a 40i like the 3/4.

[Hooded]

Originally Posted by creepy coupe

There are videos on the web of standard M140/M240 pushing 354 BHP / 380 ft/lbs on Surrey Rolling roads dyno. Which is a respectable company to use.

Still could be reading 10bhp high

[creepy coupe]

Originally Posted by Hooded

Still could be reading 10bhp high

Or low.

[Hooded]

Originally Posted by creepy coupe

Or low.

If that's the case the cars would have a quicker midrange than they have

Performance doesn't lie.. dynos do

[JD6]

Originally Posted by Hooded

If that's the case the cars would have a quicker midrange than they have

Performance doesn't lie.. dynos do

Agreed. The dyno business is rather like a fortune teller - if you want repeat custom it's better to give good news...

[creepy coupe]

Originally Posted by Hooded

If that's the case the cars would have a quicker midrange than they have

Performance doesn't lie.. dynos do

There are a few video about with very similar figures. Also the Surrey Rolling Road video was just a test for power output. And if you were selling a tuning kit you would want low stock output to make your kit look better.