J.Seven

neck by neck in accelaration till + 124Mph/200Kph with an M5?
Thanks in advance.

ItalianStallion

Stock E55 should be pretty close to an M5 up to that speed. With a pulley and ECU, you will be able to overtake an M5.

Rock

At your current rate, your next post will come in the year 2011.

BTW... no mods needed.

lbE55

That was very good. Always enjoy reading your comments.

Jakpro1

From a dig, you'll be neck and neck with an M5 stock to stock. Around the 1/4 mile mark, M5 will start to pull away.

The 1,325,234 videos that we have seen are always with one car modified on one side or the other and never stock to stock.

If you are planning on taking on an M, make sure you have some nice sticky tires (PS2's minimum) and MAKE IT FROM A DIG. If you do the 3 honk from a roll, it's not in your favor.

Let her put down her torque from the hole and she'll make you a happy man.

That actually brings on a good question. Wonder what mods a guy could add SPECIFICALLY to increase top end on our cars. We are always looking to improve 1/4 times, but wonder what we could do if we only wanted to boost the top end.

ErikGreen

Stop wondering and install a bottle

IngenereAMG

From what I have seen, a stock E55 should be about even with an E60 M5. Now if you add our ECU and/or ECU & pulley.......the E55 will walk away!

ROCKETW19

you could chang your gearing.
but why would you want anything past the 1/4 mile? i get to 120+ in the 1/4 anything faster than that on the streets and you are lookin at serious trouble. so for real life racing it probably the person that can get from 0-60 or 70mph.
it would be different if i lived near a autoban but i live in the peoples republic of kalifornia and im not usally crusing around a empty air strip.

stevebez

Well you are now fighting gearing more than power ... heatsoak is BS on our cars as an excuse to lose ag the M's at 120+ speeds. As speed rises, in my opinion, its 95% gearing ... so I would say start with a 2.82 and mbe go to a 3.02 ... but you will run out of revs if you want to get above 200mph ... 2.82 looks like the best we can do - but we still stay 2 gears short .. so you need a good lump extra power to overcome the SMG's better leverage.. how much ?? I thought of a way to calc this and will try and give it a crack tomorrow...

If you plot geared rwhp vs road speed you will get a good idea of what I am getting at.

jangy

Just get better tires, so that you can put the power down instead of spinning in place.

http://www.youtube.com/watch?v=W9VNFIEVnS0

ROCKETW19

LOL great commentary!

SteveFox

+1 the commentary is what EVERY 55 owner thinks


BTW noce vid. walked the m5

chiromikey

heat soak is definitely not bs and there's plenty of objective data proving it.

ItalianStallion

Your beast will literally run like a civic.

E55BKS

I say we all take our cars and move to Germany so we can boost every M5 owner's ego. Just kidding M5 owners.........if you can't prove something in a 1/4 mile, forget about it. Who cares what car wins to 180+! One of these days we're going to see a video of someone running 150+ blowing a tire and killing themselves and possibly others. Let's keep the racing at the track. Be safe.

TopGun32

$800 ASP pulley

$100 Johnson Pump

and custom IC HE (under $800)

dont believe me.. (search Cali Speedway event 9/21/2007) and ask JRocket about it.

The TB will be icing on the cake.. you won't need it.

305-E55

That's good

stevebez

Yeah I know ... I was a bit flustered when I wrote that ... but its still not the main reason the M's are dominant above 120mph...its their extra 2 gears that do it.

chiromikey

lol, i hear ya...you've been taking a beating for those wett dump valves.

stevebez

Ha! yeah ... I feel like this

The worst part about those valves is that Wet are purposefully vague about them ... if its defending their intelectual property or perhaps other reasons we dont know.... but I am still pressing them to give me a better understanding of how they use them ... I think it makes the tuning of the ECU easier for them somehow. Think they use the fan to get more clean air to the lambda sensor ... then they use this somehow via ECU??? yeah I dont get it either... thats kind of all I have gathered. These valves add nothing to hp on their own... it has to be in conjunction with ECU - which is what they said.

ECU prog is in - will run car in this w/e and see where I am at - will strap in the Autoengenuity and see what sparks fly....

At end of day if I can trap ~120ish , I'll be happy!!

Zod

Again have you done any testing in stock form to go by your claims mate?
i recall reading that most m5 guys only used 7th for fuel economy, think it was 3rd and 6th that were the strong pulling ones according to some.

I have not seen many stock races as mostly people are modded... or have old pumps that fail and do not know about it.

I am not saying the M can not win, but lots of conflicting data has been shown and lots of races where E's have won, with out any gear changes or modifications so again

stevebez

I still have to see an E beat an M from 120+ roll ... have not seen any evidence of that.

Any guru's there to help me with some calc's if I want to go from flywheel hp to road torque applied translating through the gearing its simple multiplication right?

i.e. flywheel torque x gearing x diff ratio = rwt, asumming no losses?

stevebez

Well using this theorertical formula (which requires some vetting) I get a somewhat surprising result in one resopect and not that surprising in another....

So bascially I plot engine rpm vs road speed if you change up at redline everytime... I then compute the rwp applied to the road at that speed, so ineffect taking teh gearing of the cars into account... there is proabbly a much easier way of doing this but anyhow ...

The result is

1st M5, alsmost entirely across the road speeds...
2nd E63 v close to M5 initially and then falling off 3rd - 4th
3rd E55 well this was the surprise ... its substantially below both almost for the entire road speed spectrum...

This is surprising since in real life this is not what we are seeing ...

What am I missing ? Chart is excel ... how do I post it?

Zod

SleeperX vids....but both modded, but oh wait!
E55 kleemenn k4 lost at high speeds! and excuses was gearing..... yet sleeper just showed other wise and whats more the M was modded and not stock like the M6 in the k4 vid.

so please enlighten me on how this happened?

many people also applied the laws of physics and said gearing can not out way 100 + odd hp difference like that.

Also i believe it is not as simple as, if you have this gear ration you win, but i know nothing about these things so i will sit and read and learn i hope .

Searching and learning is the key! keep it up m interested to find out to

Zod

um what i did was take a screen shot of it and save it as a jpg file, then upload it.
Hope that helps