stephens

Just finished work on the E55 power upgrades.
The upgrade consists of pulley and ECU, cooling system, extra radiator and pump all of which I have previously posted details on. The header testing was completed today and the results are in. Headers are 4 into 1, with 1 3/4" primaries with a 3" collector. The front pipes have to be cut 10mm before the cat and a mounting flange welded on.
Power before the addition of headers was 359kw (480hp), now upto 403kw (540hp), on the Dyno Dynamics dyno. I'll be doing more testing this week and post final results.

BenzoBoi

Sorry Stephans but I'm a lil confused... so with a pulley, ecu, cooling system and extra radiator and pump you are pushing 480 to the crank or wheels? I am assuming wheels but I could be trippin. Maybe I jus read this whole post wrong. Hahah anyways what company ecu pulley and cooling systems did you get? Any info would greatly be appreciated.

-Sun-

BoBcanada

WOW E55

E55 POWER

Congrats!!!

E55 POWER
Please e-mail some pic's of the headers.

M5KILLR

so is that approx. 625-650hp at the crank??? assuming 14-17% driveline losses, 540/.17?????

Dr Chill

So, the headers made the biggest difference? Stephens, you still da man! And to think, this all started with a snorkel tube mod.

e55 baller

Congrats on the killer dyno Stephen. Check your e-mail. I am ready to order the kit.

Dr Chill

Just a slightly better value than Renntech.

stephens

The power increase with cooling and headers were similar, the pulley kit was the smallest increase. Weare doing three complte cars this weekend, so I am going to do one car and leave the pulley kit off to see what difference it makes. As a point of clarification, the headers, unlike Kleemann etc do not require the removal of the first cat and the primaries are all of equal tuned length.

stephens

You will see 550rwhp conservatively on a Dynojet dyno, so 640-670hp is close to the mark.

I1 ULOOZ

cool

stephens

I have a dyno for my car with 438kw(587hp), but this includes more boost than in the standard kit, so I didn't want to use it as an example of what you should expect.

Jon200

holy !@#$

438 kw atw is absolutely amazing!

would be interesting to see some 1/4 times

M5KILLR

holy shhit indeed!!! this is 6k total? where do i send the check!

stephens

Latest dyno from my car, comparing pre header and further boost upgrade.

Sunny55

Wow...what a difference the headers make!!! Do you think headers alone will increase the same amount of power to the wheels without all of your other upgrades? I wonder what your 1/4 mi times are now?

FIXEDupW209

damn!!! thats insane! ave you done any suspension mods? Oh adn im curious as well to see your 1/4 mile times as well. The new M5 will deffinatly not be able to keep up your beast.

Symbolic

That's something like 587 bhp!!!! I assume this is with the headers, software, second charge coolant recovery radiator mounted in parallel, etc. How much boost is it making at this power level? I look forward to seeing the results of your forthcoming dyno tests this weekend where you are going to measure RWHP at stock boost pressure and stock ECU settings in combination with all of the other above mods. It'd also be curious to see what the RWHP would be with all of the above mods, but with stock boost pressure combined with your ECU remapping.

By the way, the lower curve shows 350 kW. What mods were done to the car to produce that (lower) power level?

stephens

No headers, cooling upgrade, 14.7psi boost upgrade, ECU upgrade 350-360kw depending on dyno.
Headers, cooling upgrade, 15.5psi boost upgrade, ECU gives you the 430kw.

rusnakmb

Hi,

With all these upgrade, will it pass the smoke?

stephens

Thats the beauty of the MB ECU, all emmissions are as per standard, the ECU adjusts these in real time.

Finnish C32

Stephens, do you have more info about this package(s) ? i'm VERY interested

Thanks,
Ville

stephens

Yes now that I'm a sponsor I can tell you more.
The upgrade consists of four components
1. Pulley upgrade, which consists of a new crankshaft and water pump pulley complte with longer belt, which increases boost pressure to 14.7psi.



2. Cooling upgrade, consists of additional low temp radiator, replacement powersteering cooler, hoses and additional water pump.





3. Headers



4. Upgraded ECU software.

The price of the complete kit, without ECU software is $8000USD plus freight of around $300. The components can also be purchased separately. I will post some better pics and details next week.

You can email me for further details at stephen@europerformance.com.au

eclou

This is an awesome amount of power you have developed!! However, I am skeptical that a .8# increase in boost could result in a difference of 90kw. With or without headers, it is hard to imagine that could be possible. I would be more inclined to believe that the A/F ratio was way off in the 350kw dyno versus the 440kw one. Did you measure any wideband pre-cat AFR's?

stephens

The 350kW dyno, is without headers and at 14.7psi boost. The 438kW is with headers and even higher boost. The car produces about 400kW at the wheels on 14.7psi boost, which is what we sell in the kit.
AFR's stay within 12.5-11.5 to 1 range independent of boost and headers.