MOD Question
Thread Starter
Junior Member
Joined: Oct 2014
Posts: 68
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From: Dickinson, TX
2007 MB S65 AMG, 2003 GMC Sierra 3500 Dually, 1985 Mercedes 300 SD Diesel, 1995 Mecedes S320
MOD Question
I've been in contact with (2) speed (tuner) shops while looking for a dyno tune and they advised me that the older model evosport shorty headers will not give much of a gain with or without a tune, and that I would have to go with long tubes before I do the throttle body upgrade. I was also told in order to do the TB upgrade That I need to upgrade the injectors (along with long tubes) so I will not blow out the #8 cylinder. He said that they wouldn't even dyno my car with the shorty headers with the larger throttle body because he has seen major damage done to the engine without the complete (injectors, long tubes, 80mmTB) upgrade. The frustrating part is I've been online researching all the upgrades and piecing the MODs together for months now to find this info out. The question is has anyone had major issues rolling with shorty headers, do shorties limit the mods you can do? Also I have a VRP crank pulley with the part# 318200175 not quite sure if this is a 175 (because of the last 3 numbers of the part number) or is it a 180?
Thanks in advance
Thanks in advance
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,066
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From: Folsom, CA
2005 E55 AMG
long tubes will give the most power > 40RWHP
shortys will give 20-30
mid-length will give 30-40
I believe you have a 175 crank pulley - but I'm not an expert by any means
once you eclipse the 500RWHP mark the upgraded injectors are pretty much needed
a crank pulley (175) plus the throttle body and headers will put you around that mark
I have mid-length headers and S/C pulley with a tune and make 481RWHP
shortys will give 20-30
mid-length will give 30-40
I believe you have a 175 crank pulley - but I'm not an expert by any means
once you eclipse the 500RWHP mark the upgraded injectors are pretty much needed
a crank pulley (175) plus the throttle body and headers will put you around that mark
I have mid-length headers and S/C pulley with a tune and make 481RWHP
MBWorld Fanatic!
Joined: Jun 2009
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From: Cypress, TX
'06 E55, '15 Jeep SRT8, '94 Mustang GT
I can't find it, but someone did post a thread about replacing just that bottleneck at the top of the midpipe and how much it helped, even with the stock headers.
Senior Member
Joined: Aug 2014
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2006 E55 AMG
I don't understand why the shop does not want your business. If they see AFR go lean, they can richen it up. If that doesn't work, then put in bigger injectors. Besides, if they say the shorties have no effect, then what is the problem?
Last edited by uraberg; Nov 23, 2014 at 10:13 AM.
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Thread Starter
Junior Member
Joined: Oct 2014
Posts: 68
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From: Dickinson, TX
2007 MB S65 AMG, 2003 GMC Sierra 3500 Dually, 1985 Mercedes 300 SD Diesel, 1995 Mecedes S320
Oh, they want my business, They want me to trash my shorty evosports and buy their long tubes $2800 and then custom dyno tune for $1000...
Thats why my initial question was, basically does it sound right to need to change out the shortys to long tubes before upgrading TB and injectors?
I'm being told I will damage my engine if I upgrade the (82mm) TB without upgrading to long tubes while running a 180 pulley and cooling mod...
Hes saying they won't dyno it with a custom tune until I put long tubes, 82mm TB and injectors because they've seen damage occur numerous times when using the shorty headers with that setup, has anyone been told this as well or has any damage been done to their engine?
Thats why my initial question was, basically does it sound right to need to change out the shortys to long tubes before upgrading TB and injectors?
I'm being told I will damage my engine if I upgrade the (82mm) TB without upgrading to long tubes while running a 180 pulley and cooling mod...
Hes saying they won't dyno it with a custom tune until I put long tubes, 82mm TB and injectors because they've seen damage occur numerous times when using the shorty headers with that setup, has anyone been told this as well or has any damage been done to their engine?
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Joined: Jun 2008
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From: Texas
2003 CL55
If you are going with a larger TB, then go 82mm. Does not sound like a lot bigger but there is a big difference between the two.
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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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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.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
