Mods/power
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Member
Joined: Nov 2009
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03 e55 amg
Mods/power
09 slk55
Headers high flow cats & mid section
K&n
Custom tune
What power should I be looking to make with these mods ?
In the USA you use 93 octane I'll be using australian pump fuel 98 octane
Headers high flow cats & mid section
K&n
Custom tune
What power should I be looking to make with these mods ?
In the USA you use 93 octane I'll be using australian pump fuel 98 octane
Super Member
Joined: Aug 2012
Posts: 963
Likes: 58
From: USA
CL63 AMG
Your 98 octane = USA 93 octane, it's not actually any higher, just a different way of rating it.
Headers make a good 25 HP, you can get headers now for amazing prices for your SLK55... Here is an example of just how low the prices have gotten:
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
Headers make a good 25 HP, you can get headers now for amazing prices for your SLK55... Here is an example of just how low the prices have gotten:
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
Senior Member
Joined: Sep 2011
Posts: 302
Likes: 11
From: CA
E63 M157
Headers make a good 25 HP, you can get headers now for amazing prices for your SLK55... Here is an example of just how low the prices have gotten:
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
How hard is the install for these headers?
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Joined: Dec 2007
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
Those are not Headers and not much of an upgrade in performance from the stock exhaust manifolds. A remapped ECU Tune will fetch you near 20 HP so if you install those exhaust logs and tune the net gain will come from the tune mostly. Good luck getting 25 HP from those alone on a 5.5 N/A.
I gained +48hp and +40tq with Evosport custom longtube headers, X-pipe, race cats, full exhaust, PTE 55 cams, and Evosport ECU tune on my SLK55.
This is what headers look like.. Evosport custom longtube headers.
I gained +48hp and +40tq with Evosport custom longtube headers, X-pipe, race cats, full exhaust, PTE 55 cams, and Evosport ECU tune on my SLK55.
This is what headers look like.. Evosport custom longtube headers.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,862
Likes: 5
From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
Your 98 octane = USA 93 octane, it's not actually any higher, just a different way of rating it.
Headers make a good 25 HP, you can get headers now for amazing prices for your SLK55... Here is an example of just how low the prices have gotten:
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
Headers make a good 25 HP, you can get headers now for amazing prices for your SLK55... Here is an example of just how low the prices have gotten:
http://www.ebay.com/itm/Mercedes-Ben...-/370638354519
Super Member
Joined: Aug 2012
Posts: 963
Likes: 58
From: USA
CL63 AMG
That's probably conservative, on the M113, you can get up to 20+ HP on upgraded manifolds bc the stock ones are such junk. Best part is they are direct bolt on, so labor to install is super cheap. Long tubes are a big project
MBWorld Fanatic!
Joined: Dec 2007
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
A better choice would be a "shorty header" like from Evosport and it's also a direct fit, not cutting or welding needed. These would give the 5.5 N/A a true 25 HP increase.
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Senior Member
Joined: May 2008
Posts: 413
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From: Oklahoma
SLK55AMG, SL600
Have you ever tried modding a 5.5 N/A? That's not conservative because it's very hard to get extra power out of a 5.5 N/A, not to mention those exhaust manifolds are worthless!
A better choice would be a "shorty header" like from Evosport and it's also a direct fit, not cutting or welding needed. These would give the 5.5 N/A a true 25 HP increase.
A better choice would be a "shorty header" like from Evosport and it's also a direct fit, not cutting or welding needed. These would give the 5.5 N/A a true 25 HP increase.
for thinking about them. 
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MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,862
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,862
Likes: 5
From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
With longtube headers 45+ HP, with shorty headers 25+ HP. The K&N's won't add any HP. The race cats will help.
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Member
Joined: Nov 2009
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03 e55 amg
Those are not Headers and not much of an upgrade in performance from the stock exhaust manifolds. A remapped ECU Tune will fetch you near 20 HP so if you install those exhaust logs and tune the net gain will come from the tune mostly. Good luck getting 25 HP from those alone on a 5.5 N/A.
I gained +48hp and +40tq with Evosport custom longtube headers, X-pipe, race cats, full exhaust, PTE 55 cams, and Evosport ECU tune on my SLK55.
This is what headers look like.. Evosport custom longtube headers.
I gained +48hp and +40tq with Evosport custom longtube headers, X-pipe, race cats, full exhaust, PTE 55 cams, and Evosport ECU tune on my SLK55.
This is what headers look like.. Evosport custom longtube headers.
MBWorld Fanatic!
Joined: Dec 2007
Posts: 1,862
Likes: 5
From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
I paid $6K for Evosport's custom longtube headers which come with a 2100ºF thermobaric ceramic coating for heat retention and corrosion protection.
Evosport currently has a $500 discount special on their "shorty header" for $1,995.
http://www.evosport.com/product/prod...VO.EXH.M11.H03
MBH also makes a good longtube header for $2,995. It made 31whp and about 25wtq with no tune on a stock SLK55.
http://www.mbhmotorsports.com/SLK55-...e-Headers.html
Evosport currently has a $500 discount special on their "shorty header" for $1,995.
http://www.evosport.com/product/prod...VO.EXH.M11.H03
MBH also makes a good longtube header for $2,995. It made 31whp and about 25wtq with no tune on a stock SLK55.
http://www.mbhmotorsports.com/SLK55-...e-Headers.html
Member
Joined: Jan 2005
Posts: 154
Likes: 0
SLK55, Mustang 480hp, CBR600rr
Kleemann has their long tube headers on sale for $995. If you going to get headers you should go ahead and get long tube ones and don't bother with the shorties listed above (ones making 13.3hp).
http://i188.photobucket.com/albums/z...annHeaders.jpg
http://i188.photobucket.com/albums/z...annHeaders.jpg
Member
Joined: Jan 2005
Posts: 154
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SLK55, Mustang 480hp, CBR600rr
I don't know about 'way better' but they are longer tube style long tube headers. With Keemann you'll get 25hp, with MBH you get 31-32hp. so for 7hp or less you going to pay $2,000 more? Hardly better for your money. If want more hp, use the $2k saved and apply it to a supercharger install or you could have a new Quaife differential installed. MBH needs to get real on their price if they want to sell them.
Few points too:
Those Evosport headers posted are what they call 'equal length shorties' vs. normal shorties. They are called equal length because all the tubes are of the same length before reaching the collector. You might gain 2-3hp over standard shorty headers, or in my view not worth it. Those Evos also have severe bending in the last tube which I can't imagine helps their performance much. If you going to bother with replacing headers go with full length ones. Frankly the Kleemann ones are the best hp output for the $$$ and ones I am looking at getting (also looking at getting their S/C too).
Last edited by Ppower; Nov 3, 2012 at 04:48 PM.
Member
Joined: Jan 2005
Posts: 154
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SLK55, Mustang 480hp, CBR600rr
Spending half that and getting a Quaife rear diff would yield way better results.
Pp
Last edited by Ppower; Nov 18, 2012 at 12:11 PM.
Senior Member
Joined: Apr 2007
Posts: 450
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From: Los Angeles
2005 C55
