SL55/63/65/R230 AMG: SL55 MOD and HP results- post your setup
I've need a few big powered 55's in my day. With this combo: 180mm pulley or even 178mm pulley, Dyno tune, Long tube headers, Throttle body, airbox, cooling. You would be around the 550whp mark, give or take.
Optional ideas: 100oct tune, more cooling mods? I've seen E55's put down 480+whp just my doing mods I've mentioned and tuning for race fuel.
You dont have to think outside of the box to make big power with these cars. Its when you hit the wall or end of the conventional mods do you have to.
With my car I did the TB and cams before the pulley mod, mostly just to see how it performed. 30-40 HP is probably the right range. Throttle response was also a bit better with the bigger TB.
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The SLR cams were something of a science project led by forum members Jakpro and Chiromikey. They make less power than the VRP/PTE cams but are a bit smoother, which is why forum member Tech-Tune wanted to make the swap. The only sources for SLR cams are Mercedes (if you can find someone to sell you a set) or one of the people who previously purchased SLR cams.
Kleemann also make cams for the 55K. Schrick does as well, at least they used to.
If you search the forum you'll find a wealth of information previously written on the topic including https://mbworld.org/forums/w211-amg/...rger-cams.html
Hope that helps,
With my car I did the TB and cams before the pulley mod, mostly just to see how it performed. 30-40 HP is probably the right range. Throttle response was also a bit better with the bigger TB.
full disclosure: i got a CF airbox but it's also b/c i really like the look
If there is a choke point it would be the stock intercooler which is located directly underneath the S/C and its small size limits the amount of air going into the heads. By building a larger intercooler you can increase the airflow to the heads and increase the cooling capacity. There are a few people who have built custom top mounted coolers like the ones on the SLR.
Also, a free flowing exhaust system with low back pressure will help the S/C do its job and will result in great gains as well. More air in, more air out!
Last edited by Havoc; May 24, 2010 at 01:31 AM.

The way I see it, unless a 55K is pumping out close to 25 psi, then the S/C is not near its full potential through efficiency. Now the SLR 722 GT has a slightly lower compression for safety which means its S/C is spinning even faster to reach 25 psi!

How do they do it!!
BTW.. you're not going to see a 91 HP gain with just a pulley and tune..
The SLR cams were something of a science project led by forum members Jakpro and Chiromikey. They make less power than the VRP/PTE cams but are a bit smoother, which is why forum member Tech-Tune wanted to make the swap. The only sources for SLR cams are Mercedes (if you can find someone to sell you a set) or one of the people who previously purchased SLR cams.
Kleemann also make cams for the 55K. Schrick does as well, at least they used to.
If you search the forum you'll find a wealth of information previously written on the topic including https://mbworld.org/forums/w211-amg/...rger-cams.html
Hope that helps,
Unless the dyno jet was inaccurate I beg to differ. And yes it is a Johnson CM30 intercooler pump. I suggest you speak with Tom owner of Lucent Morors in West LA as he know much more than me . He guarantees a min gain of 80hp but states average is above that. Dyno seem to prove him right .
shops generally tend to pit their own mod recommendations and back them up on their own dynos (which are ussually high reading dynos like a dynojet for example). In all reality you can make a dyno say whatever you want it to at the end of a pull...that's the scary part
168mm pulley, 80mm TB, green filters, Kleemann tune and headers, resonator delete, new MB coolant pump.



