Decat and tune vs Headers and tune
MBWorld Fanatic!
Joined: Oct 2009
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From: eNyCe
Steel Grey Metallic C63!!
...so in conclusion....a full decat and tune is near enough the same as a set of longtubes with a tune, except you save a couple G's on the outlay for the longtubes.
Thanks guys. I might rethink my strategy now. Maybe I'll just leave the longtubes and do a decat and tune with crank pulley. I'll keep you posted.
Thanks guys. I might rethink my strategy now. Maybe I'll just leave the longtubes and do a decat and tune with crank pulley. I'll keep you posted.
MBWorld Fanatic!
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From: Los Angeles
2012 P31 C63 Coupe Trackrat, 2019 GLE63S Coupe Beast
Thread Starter
MBWorld Fanatic!
Joined: Feb 2011
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From: London, UK
W212 - E63 AMG
Thing is, my info comes from reasonably reliable sources from many C63 owners in this country. I'm going by what they tell me...which is... a solid dyno tune with a decat will net 550hp-560hp while longtubes with the same type of tune with net 560-570hp (all crank figures)
That being said, I am wondering if it's time to finally make that call to DPE in Australia for a set of RHD headers. As much as I like to save money, I'm also an N/A nerd who is able to somehow justify £100/hp on his cars. I've got the worlds fastest N/A celica...I'm silly like that
Can't wait to mod this motor...I really love this car.
That being said, I am wondering if it's time to finally make that call to DPE in Australia for a set of RHD headers. As much as I like to save money, I'm also an N/A nerd who is able to somehow justify £100/hp on his cars. I've got the worlds fastest N/A celica...I'm silly like that
Can't wait to mod this motor...I really love this car.
MBWorld Fanatic!
Joined: Jun 2009
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2010 C63 AMG
The power under the curve and torque is where proper headers will really beat out the decat but anyone saying taking the most restrictive part of the exhaust out won't have any effect is just a big silly pants
Junior Member
Joined: May 2012
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From: UAE AD
g55,clk63
sorry guys im not trying to prof any thing here. i just had this idea and thought might share it with the gentlemen (owner of the post ).
if he allow me latter on to share it here , i do have plan to OE tuning on dyno.
if he allow me latter on to share it here , i do have plan to OE tuning on dyno.
Senior Member
Joined: Jan 2015
Posts: 425
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From: Eurocharged Orlando
10 C63, 06 S65, 14 ML350, 95 S500
maybe shorty headers but i can't see how a decat would be the same as a LTH from MHP or MBH...i would say go for headers AND decat or 200 cell cats if needed for gov restrictions etc!
Im running LTH, no cats/res, xpipe, stock mufflers.
Im running LTH, no cats/res, xpipe, stock mufflers.
