S55 AMG upgrades

[talbir]

For the expense it's not really worth it - and I disagree a set of headers will give more power than high-lift cams! Backpressure isn't needed either but that's an entirely seperate can or worms...

As i said before, headers don't 'give' power, they maximise it. Bad headers could lose you 25bhp-35bhp easily on the S55 engine. Hot cams will barely give more than 20-25bhp.

Given your take on 'not worth it', cams are a far lower bang per buck ratio than headers. A set of hot cams for the S55 will set you back 3-4k GBP no sweat. running hot cams will also neccesitate an ECU upgrade, so by the tim you factor that in, the bang to buck ratio is awfully low.

I don't see how backpressure is not needed....you done any dyno testing with no exhaust and exhaust fitted?


talbir

 

[Dieselman]

I don't see how backpressure is not needed....you done any dyno testing with no exhaust and exhaust fitted?

If you mean no exhaust at all that would be a problem as scavenging would be reduced, otherwise minimal backpressure will nett the greatest output.
Backpressure tends to move the point of maximum output up the rev band so can liberate more as a multiplication of revs, but reduces the effective area under the torque graph overall.

 

[d w124]

talbir.that is not my car,but i have something similar.

 

[PJayUK]

Just what the yanks are like. in other words go and purchase a highly specified precision performance vehicle and *******ize it! I look at some of the pathetic attempts on a certain US site and cringe at the complete mess these jokers do in there attempts to "mod da' Benz man" If you buy a car and want to modify, then you have either bought the wrong car, dont understand what you have or are a gun-toting gangsta.

Your a lucky person to be have the privilege to own such a fine motor car. Please dont change or bugger around with it (we'll all laugh at you as well!)

 

[alanuk400]

This what someone did on his, cut away the plastic covers on the back of the grill and made these for the air to flow in.

Alan

 

[C43AMG]

Just what the yanks are like. in other words go and purchase a highly specified precision performance vehicle and *******ize it! I look at some of the pathetic attempts on a certain US site and cringe at the complete mess these jokers do in there attempts to "mod da' Benz man" If you buy a car and want to modify, then you have either bought the wrong car, dont understand what you have or are a gun-toting gangsta.

Your a lucky person to be have the privilege to own such a fine motor car. Please dont change or bugger around with it (we'll all laugh at you as well!)

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