Reading up in Evo today and I noticed that DMS now have a re-map for the 335i.

I guess it wont be long before this is out for the 135i too. £980 installed.

Power is.... 380bhp... torque... 430lbs...

Thats got to be worth every penny!!

 

This gives me a stiffy. Shame they don't ship with an LSD as standard.

 

Does the 400bhp one not come with an exhaust? That's a bit off.

 

^^^ US horsepower no doubt

 

iirc you could get about 400bhp from a 300zx with a remap only. 3litre, twin turbo so similar playing field.

That was nearly 2 decades ago....

and I even think the Beemer is heavier so not sure I see what the excitment is. Not trying to say you would buy a 20 year old 300ZX though!

 

I see your point, but the 300ZX didn't have c.300 lbft at 1600 RPM or do 30+mpg and <225g/km CO2.

 

Id prefer CA Automotive than DMS who are overpriced IMO

 

Yeah have you seen a dyno print out off a 135? The torque curve is more of a torque wall. Just goes vertical from about 1500rpm!!

 

135i tuning parts >>here<<

 

Yeah - my 300zx example was a bit one sided. The low rpm power delivery of these BMW engines is great.
I've been tuning up my old saab and it's hard to get big results at both ends of the rpm scale.

Best effort yet is 1.5bar boost at 2800rpm (about 300ft lbs) rising to 400ft lbs by 3500rpm and about 400bhp or so by 6k rpm.

I still get 30mpg too but it will never have the ***** at 2k rpm that the beemer does.

 

That is a lot of money for a remap

Huge amount of power though, scoobies don't get close to those figures with just a map

 

But there were other twin 6's from that era that *did* have low down torque.

I think this is the bit I find hardest to understand. The Japanese were doing this stuff 15-20 years ago, but everyone keeps banging on like BMW have single-handedly developed twin turbo technology.

 

Hmm - it is the efficency thing though. - the CO2 emmisions is impressive on the beemer and suspect refinement is good.

On another angle I got the following recently on a Saab 9k Aero with standard turbo but with a few other tweaks.

By 2k rpm we had 300ft lbs, 2500rpm 320ft lbs.
We got 317bhp at 5500rpm

The car does 32mpg day in day out. And this is a 14 year old Saab (2.3)

I agree with Beef on this. The only real difference here is that BMW have put this type of engine in a 'smaller' car. It's not the engine that's clever, it's the packaging of the product that is new and different.

 

Oh I'm not denying that there have been improvements and refinements in the last two decades of electronic, ecu and management systems. I think it's just that opinion seems to be that what BMW have produced is some magical future engine design that dropped through a wormhole to the present from the distant future and that they should be hailed as emperors of the world for having come up with these radical concepts.

I dunno about the hint of it being a 'smaller' car - the 135 hasn't exactly been shy around the buffet

 

They have done well with the combination of torque at 1600 RPM and the economy/emissions though. They haven't made a modders dream engine quite like a 4G63 or 2JZGTE (it is easy to take these to 200+ BHP/litre on stock internals and possible but less easy to get 400-500 BHP/litre when built, whereas people get excited about the N54 doing 130 BHP/litre), because of the direct injection and high compression, plus deliberately difficult electronics.

It could be that the N54 could do very well with low compression pistons and sorting out the fuel supply, but you can't just throw a set of 1000 cc injectors onto a direct injection engine.

Saying all of that, I would have sold my Evo and bought a 335xi and tuned it to 400 BHP if they sold it in the UK.