MHP Long Tubes - ANY issues with them? Custom tune?
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Joined: Apr 2003
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From: North
MHP Long Tubes - ANY issues with them? Custom tune?
Looking to get no less than 450whp on 91 octane from a P31 PP C63.
The plan is ECU reflash, filters, Akrapovic slip-on mufflers and some type of headers that actually work. To this end the MHP Long Tube headers caught my attention.
Have MHP owners had ANY issues with these headers? Leaking, cracking, not fitting perfectly, excessive under-hood heat, etc? I would most likely ceramic coat mine.
Is it possible to run long tube headers and retain catalytic converters? Not for smog testing but I hate the smell of catless cars and I do have an conscience when it comes to OUR world/environment.
The plan is ECU reflash, filters, Akrapovic slip-on mufflers and some type of headers that actually work. To this end the MHP Long Tube headers caught my attention.
Have MHP owners had ANY issues with these headers? Leaking, cracking, not fitting perfectly, excessive under-hood heat, etc? I would most likely ceramic coat mine.
Is it possible to run long tube headers and retain catalytic converters? Not for smog testing but I hate the smell of catless cars and I do have an conscience when it comes to OUR world/environment.
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Joined: Nov 2010
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2008 C63 ,2009 SL 63 AMG, 2011 SLS AMG
Looking to get no less than 450whp on 91 octane from a P31 PP C63.
The plan is ECU reflash, filters, Akrapovic slip-on mufflers and some type of headers that actually work. To this end the MHP Long Tube headers caught my attention.
Have MHP owners had ANY issues with these headers? Leaking, cracking, not fitting perfectly, excessive under-hood heat, etc? I would most likely ceramic coat mine.
Is it possible to run long tube headers and retain catalytic converters? Not for smog testing but I hate the smell of catless cars and I do have an conscience when it comes to OUR world/environment.
The plan is ECU reflash, filters, Akrapovic slip-on mufflers and some type of headers that actually work. To this end the MHP Long Tube headers caught my attention.
Have MHP owners had ANY issues with these headers? Leaking, cracking, not fitting perfectly, excessive under-hood heat, etc? I would most likely ceramic coat mine.
Is it possible to run long tube headers and retain catalytic converters? Not for smog testing but I hate the smell of catless cars and I do have an conscience when it comes to OUR world/environment.
. MHP's V3 tune and headers will give you 100 RWHP.The headers will cancel out your primary cats automatically. So if your looking to keep your primary cats. MHP headers wont work, because the merge collecters will be in place of the primary cats. You can still keep your secondary cats though. Dont worry about the smell too much. Get
the headers dude, you will love your car.
Who cares about the smell, go catless, and wake up the neighbors
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Joined: Apr 2003
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From: North
Thanks for the info. It looks like the MHP long tubes (w/ceramic coating) and tune will give me the power I want while retaining one pair of cats.
Are drop-in filters the way to go or are there any good airbox mods, other than the ROW box?
Are drop-in filters the way to go or are there any good airbox mods, other than the ROW box?
Last edited by ringmaster; May 29, 2011 at 05:18 PM. Reason: 1
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2008 C63 ,2009 SL 63 AMG, 2011 SLS AMG
As for the filters, go with pipercross, or BMC. that would be a good 5-8 HP gain
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Joined: Mar 2011
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2009 C63
Hello.
what about the Renntech stage 2 performance kit:
http://www.renntechmercedes.com/www/node/199
better than MHP?
what about the Renntech stage 2 performance kit:
http://www.renntechmercedes.com/www/node/199
better than MHP?
MBWorld Fanatic!
Joined: Jun 2008
Posts: 4,455
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From: Ny
Anything W/4Wheels
The MHP headers Are the best in biz rite now, Most power gains and best track results,
I think I was the 3th person to have the LT's from MHP
I had no fitment issues and I did the install with a friend took about 1 full day on jack stands,
I have the headers for almost 2 years now and so far no cracks or leaks besides what my welder F'ed up,
Good Luck with u build sound like you going to have a beast in your hands after.
I think I was the 3th person to have the LT's from MHP
I had no fitment issues and I did the install with a friend took about 1 full day on jack stands,
I have the headers for almost 2 years now and so far no cracks or leaks besides what my welder F'ed up,
Good Luck with u build sound like you going to have a beast in your hands after.
