W211 AMG Discuss the W211 AMG's such as the E55 and the E63

LT headers question

Old May 7, 2010 | 04:55 PM
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LT headers question

I have installed a set of LT headers(i was running before without cats), i have not see a drop in boost, the boost remain the same, how do you guys explain that?
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Old May 7, 2010 | 06:22 PM
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How are you logging boost? What did you have before exhaust wise?
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Old May 7, 2010 | 08:09 PM
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headers take away boost, you need a bigger pulley to compensate for the loss of boost
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Old May 8, 2010 | 06:02 PM
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Originally Posted by Luke_M
How are you logging boost? What did you have before exhaust wise?
i have a digital gauge tapped in the intake manifold.
before i was running stock exhaust but without cats.
i have E55 intake as mentioned in my signature.
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Old May 8, 2010 | 06:04 PM
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Originally Posted by E55Bullet
headers take away boost, you need a bigger pulley to compensate for the loss of boost
i was saying that i did not lost boost.
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Old May 9, 2010 | 02:13 PM
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because u already removed the cats before, thats what i understand, or maybe your LT are not big enough, what is the collecter size ? i think if you make it 3" you will loose some boost.

i didn't go for LT after my setup because i dont think i will get that much gain if i get any at all.
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Old May 9, 2010 | 02:27 PM
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Originally Posted by Ali_E55
because u already removed the cats before, thats what i understand, or maybe your LT are not big enough, what is the collecter size ? i think if you make it 3" you will loose some boost.

i didn't go for LT after my setup because i dont think i will get that much gain if i get any at all.
1.75", collector 2.5", yes i think maybe cause of cats.

i didn't go for LT after my setup because i dont think i will get that much gain if i get any at all.[/quote]
you'r right!
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