BNR34

iTrader: (1)

One of the 1st chip to crank the boost on the new M5, the verdict is 612 hp and 553 lb-ft, roughly +50 hp and tq from stock (560hp / 500 lb-ft).

So far both the stock power and with a chip, the M5 makes identical power to the X5/X6 M, despite the M5 motor have a bunch of power upgrade over the SUV motor.........(higher compression, higher boost pressure, higher redline, valvetronic......etc).

I don't care enough to look into it, all you Bimmer nuts, any of you know why?

http://www.gtspirit.com/2012/01/25/p...2-bmw-f10m-m5/

blacksc400

iTrader: (4)

Meh, they are charging 3499 Euro for a chip upgrade!

The gain is pretty good though.

Wonder how much more from intercooler, exhaust upgrade will gain.

BNR34

iTrader: (1)

That is a BMW surcharge, look at all the Dinan prices. The badge apply to tuning prices too

The gain is good considering the stock boost is already 22 psi

Probably 50 more.........I don't think there will be much more on pump gas though, is a small 4.4L and all. Unlike those huge AMG motor.

ST430

50hp and 50 torque good deal at $4600?! Really?!!! :O

BNR34

iTrader: (1)

Who said is a good deal?

blacksc400 said is good gain.

I8ABMR

I think that is funny that people still refer to ECU retunes as a "chip". LOL. Sounds like its 1990. LOL . Todasy we call it ECU tuning or a reflash. Most cars with this type of powr and forced induction can make at least 50-100 hp more . Its just a matter of changing some parameters in the ECU like ignition maps, boost, timing, etc

BNR34

iTrader: (1)

I just picked a generic way to call it.

yup, just reporting expected known facts. Every cars are the same, is getting boring now.

That's what a chip does.

Thanks for pointing out all the obvious that we all know.

blacksc400

iTrader: (4)

Personally, I really don't like retune the ECU and bump up the boost without changing hardwares to increase HP. Isn't it hurts reliability?
I would just change the intake, headers, exhaust to free up some flow. Probably gain some 30-50HP from forced induction cars anyway.

BNR34

iTrader: (1)

That's what modding is, you are reducing safety margin of reliability and longevity to gain performance.

I understand what you are thinking. But it is always safer to retune it with the new hardwares to make sure it is still running within the safe parameters, sometimes is fine without tuning but sometimes the new hardwares make it runs too lean and it blows up.

BNR34

iTrader: (1)

The more you stress it, the shorter it last.........that's pretty much sums it up.

Top extremes are 8000 hp funny car motor that only last one run (4 seconds) before it needs a rebuilt. Or motor in F1 car that only last one race (a few hundreds miles).

Or an unstressed stock V8 in a Lexus LS that runs for 400k miles

So a stock M5 motor is probably good for 100k miles, you crank the boost to get 700~800 hp, you shorten it's life to 80k~60k miles.

You play, you pay!

BNR34

iTrader: (1)

This R34 GTR is own by a personal friend of mine, 900 hp from a 2.8L inline 6 built by Top Secret. I asked him have Top Secret ever tells you the life expectancy of this motor? He said, 50k Km, that's 30k miles.......ha

http://speedhunters.com/archive/2009...tizione-r.aspx

blacksc400

iTrader: (4)

Crazy GTR! Do you still have the picture of your old one?

Anyway, when people mod a car to extreme, they don't really drive it anymore. Either garage queen, show car or weekend pleasure car/track days only. Hell, any car over 500Hp is not ideal for street/everyday driving already.

But when chip cars like AMG/M/RS, the cars are being driven as daily in most cases. So the better the reliability is always a plus. Well, I guess you always have to pay to play.

bad co

Damn thats bad. The Kleemann K1 kit for the new BT63 motors gets you up to 690hp for 1200eu

BNR34

iTrader: (1)

I just got these, scoll down to the middle posts:

https://www.clublexus.com/forums/gs-...-design-3.html

Then Paul turned it into this after I sold it to him:

http://www.autoblog.com/2007/10/18/n...r34-nissan-sk/

blacksc400

iTrader: (4)

Hold on, you sold the R34 to Paul Walker??!!!