prodigymb

i was thinking along the same lines. i did loose boost after getting rid of my main cats and doing a full dual 3" system and EVO headers. i wanted to get a 190mm to get the boost back

Ali_E55

he didnt tell me the name of the german tuner, because he is the owner of the garage who tunes for the other guys through on-line.= and wont reveal his secret. lol


cam shafts are not done localy, they are SHRECK or something like that.

Ali_E55

no 1/4 miles here in UAE for these cars.

but the pulleys are done in germany.

and if you will get LT headers and change some mods. man your car will be crazy . but as the company who makes the pulleys.

if u unstall 190mm and other mods. u need bigger injectors.

but only the pulley, then u can remain the stock ones.

as the name of the company , he told me once. but dont expect me to remember a germen company name >< lol

and yah, he scratches the name and remove it from the pulley side. lol

but they look like stock ones. only the outer ring is large.

stevebez

How did they comapre before the SL got the pulley?

Remember the SL has 2.82 gearing vs the 2.65 in the E.

Ali_E55

the E used to smoke him easily .

but now the SL.

and he removed the pulley yesterday because of high temps. and the car dies after reaching 220km

alikadus

wats the Shop name in Dubai .. i live in Abu Dhabi !! we should meet up some day i have alot of questions and i am kinda confused .. i have the VATH edition of the E55 from germany .. i really dont know how much horse power its putting down .. but after beating the Aston Martin DB9 I really wanted to know !!!

prodigymb

whats a VATh edition? pics?

Marcus Frost

I am going to hold my tongue on the larger pulley, but I see a lot of people talk about this. Guys too often look at boost like it's the final determination of horsepower. I just had this discussion with a friend of mine who does a lot of tuning for various forced induction platforms (but not MB). It's NOT about boost, it's about FLOW. To a certain extent, they are related, but they also can be independent. If your boost level drops because you have removed exhaust restriction, that does not mean you've lost power or somehow your supercharger is flowing less air, it just means that the same amount of air flow is now seeing less resistance (IE, it is no longer building boost, rather it is flowing) through the combustion process!

Boost, depending on how it's discussed, is not a good thing. People use boost so sort of describe flow, but then people forge a link between them and that's just not how it works. Focus on FLOW, not on boost, and you will make more power.

I am eager to see what people discover with these large pullies. Looking at the compressor map it does drop efficiency significantly past what would equate to 180mm pulley but that doesn't mean it won't generate more power in a certain setup... that's the difference between "theories" and "realities"

-m

bassn_07

I think it's great that people are trying bigger pulleys because up to this point I've seen no proof of it slowing down a well breathing machine with sufficient cooling. I've data logged the crap out of my car and I'm pretty sure my car would do well with a bigger one...i think . Maybe I'll give it a shot sometime soon .

Our platform has made some huge leaps this past year with many contributing factors such as larger pulleys, custom tuning, and so on. IMO I think some of these cars will see some nice gains with a 185 pulley.

Max.H

Absolutely agree, motor is running more efficient... Well said Marcus.


Alan: As a drag junkie, You should think about skipping the 185mm and go for the gusto.. Especially since the boys from the UAE are doing it big with the 190mm? You should have the cooling mods to back it up. I advise you tune for race gas and crush it this year.

Ali_e55: Awesome post man. Thanks for sharing.

bassn_07

Yeah, I'm not quite sure what my next thing will be but I'm thinking of keeping my car the way it is just to spank a few more people. I have a bone to pick with some Socal peeps because they think they are the *****. They'll soon see what a a$$ whoppin feels like.....

There's also a CLS in San Diego that I need to get it on with in street form. For some strange reason people think I'm slow and they think I need ice to run 10's...lol. I hot lapped 3 10's in a row back to back with no rest in between , but who's counting . Actually I'm going to invite the CLS to Sac and I'll use my street tires, no ice, and start off in 2nd gear against his DR's and nitrous....of course just for ***** and giggles. Winner will get the little black flag..."Team AMG".

Sorry but I'm still venting....back on topic .

alikadus

What i read its about 620 HP and its flat out 10.83 on the 1/4 mil .. i dont know since in the UAE there is no Drag Strip !! i'll upload some pic in a couple of days since its in its majour service right now .. any ways ALI i still didnt get ur reply on the Tunner place in Dubai !! thanks ..

pearlpower

Would love to see a 190mm before and after dyno.

MRAMG1

Couldn't agree more my friend

Back about 10 years ago. I was running my stang with 10 pounds of boost with a KB supercharger. I changed to LARGE port volume, CNC ported aluminum heads and dropped almost 2 pounds of boost.

However I dynoed almost 150 RWHP more

On supercharged engines, ANY restriction, via exhaust, valves, TB, etc KILLS performance. It needs to breath in, just as easy as out to make peak power.

As you stated boost by itself, does NOT mean more power. Especially if you are past the compressors usable range/flow capacity.

GREAT POST M

Max.H

Wow..

You're killing me bro. What's got you all riled up? You just went off on a wild tangent. You're like orbiting the moon right now. But, I still like it. LoL