Which mod should be first?
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From: Bay Area
03 C32 gone, 06 CLS55, 16 Tesla X
Which mod should be first?
Hi all,
So I currently have 180mm, 550cc injectors (installed soon), some intake mods and second CATs removed with x pipe. If I only have money for either shorties headers or 82mm throttle, which one should I go first? And why? Some thoughts, logic, math, experiences are much appreciated!
Thanks,
So I currently have 180mm, 550cc injectors (installed soon), some intake mods and second CATs removed with x pipe. If I only have money for either shorties headers or 82mm throttle, which one should I go first? And why? Some thoughts, logic, math, experiences are much appreciated!
Thanks,
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From: Texas
2003 CL55
You have to do the headers and they will help with cooling some and also do some cooling mods.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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instagram @ultimate_pd
facebook.com/ultimatepd
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2006 E55, 2012 Jeep SRT, 2008 G37s 6MT (The Mrs.), 2005 Explorer
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ML550
I think that the first and most "bang-for-the-buck" mod is a good set of LT headers (I'm dividing the header universe into shorties that bolt to the factory exhaust and then everything else). Everything else you'll do after the headers builds off the engine's ability to breathe better following a header upgrade.
And speaking from personal experience, don't waste your time or money with shorties - their gains are relatively minimal compared to LTs (despite a few specious claims around here to the contrary) because they still end up connecting to the restrictive factory catalysts.
And speaking from personal experience, don't waste your time or money with shorties - their gains are relatively minimal compared to LTs (despite a few specious claims around here to the contrary) because they still end up connecting to the restrictive factory catalysts.
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2012 C63 BS & 2014 E63 Estate & 2008 CLK63 BS
I think that the first and most "bang-for-the-buck" mod is a good set of LT headers (I'm dividing the header universe into shorties that bolt to the factory exhaust and then everything else). Everything else you'll do after the headers builds off the engine's ability to breathe better following a header upgrade.
And speaking from personal experience, don't waste your time or money with shorties - their gains are relatively minimal compared to LTs (despite a few specious claims around here to the contrary) because they still end up connecting to the restrictive factory catalysts.
And speaking from personal experience, don't waste your time or money with shorties - their gains are relatively minimal compared to LTs (despite a few specious claims around here to the contrary) because they still end up connecting to the restrictive factory catalysts.
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From: Bay Area
03 C32 gone, 06 CLS55, 16 Tesla X
Thanks guys!
I live in CA, so big NO to long tube headers
, also no for high flow CATs. I love those, but can't pass smog here 
And not to mentioned, I don't like a loud exhaust.
I have separated coolant but no HE as I don't feel I need it at least for now since I don't track the car nor do multiple WOT. Love doing that too, but you have no room doing it in the bay and cops are everywhere. The city really needs some $$$ from traffic tickets to cover the state budget lol. But don't get me wrong, I love power and need power
Thank you all for your input!
Edit: Yes, EC Tune
I live in CA, so big NO to long tube headers
, also no for high flow CATs. I love those, but can't pass smog here And not to mentioned, I don't like a loud exhaust.I have separated coolant but no HE as I don't feel I need it at least for now since I don't track the car nor do multiple WOT. Love doing that too, but you have no room doing it in the bay and cops are everywhere. The city really needs some $$$ from traffic tickets to cover the state budget lol. But don't get me wrong, I love power and need power
Thank you all for your input!
Edit: Yes, EC Tune
Last edited by CLKCLK; Feb 22, 2012 at 02:07 PM.
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
My opinion...go shorties than.
82mm will show SOME improvement but the stock airbox is restrictive in my experience. You'll be opening up the hole with still have the restriction before it.
If you go 82mm, go with a higher flow airbox as well like the VRP/Carbino with some K&Ns or your choice of filter.
Still my vote is for Kleemann style header if you wont go long tubers but shorties certainly aren't horrible.
82mm will show SOME improvement but the stock airbox is restrictive in my experience. You'll be opening up the hole with still have the restriction before it.
If you go 82mm, go with a higher flow airbox as well like the VRP/Carbino with some K&Ns or your choice of filter.
Still my vote is for Kleemann style header if you wont go long tubers but shorties certainly aren't horrible.
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From: NH
2012 C63 BS & 2014 E63 Estate & 2008 CLK63 BS
My opinion...go shorties than.
82mm will show SOME improvement but the stock airbox is restrictive in my experience. You'll be opening up the hole with still have the restriction before it.
If you go 82mm, go with a higher flow airbox as well like the VRP/Carbino with some K&Ns or your choice of filter.
Still my vote is for Kleemann style header if you wont go long tubers but shorties certainly aren't horrible.
82mm will show SOME improvement but the stock airbox is restrictive in my experience. You'll be opening up the hole with still have the restriction before it.
If you go 82mm, go with a higher flow airbox as well like the VRP/Carbino with some K&Ns or your choice of filter.
Still my vote is for Kleemann style header if you wont go long tubers but shorties certainly aren't horrible.
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From: Treasure Island, FL
GLE 63S
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Kleemann will reprogram the ECU for free. Its the best solution for California driver. And if you send ECU to Cory for reprogramming, he will give you a great deal on ECU tune in the same time.
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GLE 63S
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ML550
Nobody thinks of Kleemans as shorties; shorties are those that actually bolt up to the existing stock system. As others have said, they're mid-length headers that eliminate the primary cats. They're a very good compromise if you want most of the performance of LTs, don't mind doing or having welding done to install them, and don't want stainless steel.
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From: NH
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Nobody thinks of Kleemans as shorties; shorties are those that actually bolt up to the existing stock system. As others have said, they're mid-length headers that eliminate the primary cats. They're a very good compromise if you want most of the performance of LTs, don't mind doing or having welding done to install them, and don't want stainless steel.
Thread Starter
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From: The Granite State
.
I saw some online chatter that CA was going to skip the visual inspections and tailpipe tests for anything newer than 2000... And just check OBD for codes.
Not sure where I saw that, but there were claims that the administration of all the checks for relatively new cars was becoming prohibitively expensive.
Might be worth researching a bit before buying any new parts.
-G
Not sure where I saw that, but there were claims that the administration of all the checks for relatively new cars was becoming prohibitively expensive.
Might be worth researching a bit before buying any new parts.
-G
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From: Socal, Chino
E55 2006 / CLS55 / S450 / Jag XKR2011
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From: Socal, Chino
E55 2006 / CLS55 / S450 / Jag XKR2011
