Shardul's manifold headers ROCK!
Thread Starter
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,599
Likes: 102
From: Florida
A Merc
Shardul's manifold headers ROCK!
Hey guys like the title said , I was lucky enough to pick these up from infinity on MBWorld for 350$ and what a great investment! This is the link:
https://mbworld.org/forums/engine-pe...manifolds.html
Shardul was helpful answering questions as well even though the sale was already done through infinity ...
I have 180 pulley, PLM HE, upgraded Bosch pump, PTE thermostat, Jeremy OE Tune
Well here are the results..all on the same dyno and same conditions except humidity was higher on post install, no retune just these babies added.
Pre shardul headers : 445hp/552tq. 85.29f, 29.92 in-Hg, humidity: 38%, SAE: 1.00
Post shardul headers: 464.2hp/574.03. 84.07f, 29.75 in-Hg, humidity : 56%, SAE: 1.01
Now the dyno operator said that on the chart I had 30hp/30tq gains over the entire power band until redline...
Now guys I am having the fuel system with looped fuel rail and 550 injectors go in hopefully this week and get a retune from Jeremy, I'm sure it will go even higher!
Thanks shardul!
https://mbworld.org/forums/engine-pe...manifolds.html
Shardul was helpful answering questions as well even though the sale was already done through infinity ...
I have 180 pulley, PLM HE, upgraded Bosch pump, PTE thermostat, Jeremy OE Tune
Well here are the results..all on the same dyno and same conditions except humidity was higher on post install, no retune just these babies added.
Pre shardul headers : 445hp/552tq. 85.29f, 29.92 in-Hg, humidity: 38%, SAE: 1.00
Post shardul headers: 464.2hp/574.03. 84.07f, 29.75 in-Hg, humidity : 56%, SAE: 1.01
Now the dyno operator said that on the chart I had 30hp/30tq gains over the entire power band until redline...
Now guys I am having the fuel system with looped fuel rail and 550 injectors go in hopefully this week and get a retune from Jeremy, I'm sure it will go even higher!
Thanks shardul!
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MBWorld Fanatic!
Joined: Jan 2007
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From: PA
S600, GL450, GLC 43
PS: I DO subsribe to the larger fuel injector and rail mod crowd
MBWorld Fanatic!
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From: Streets of SoFlo
you to Hate
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Joined: Mar 2011
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2011 E63, 2013 CLS63
Instead of starting a new thread I'll ask my question here.
In order for long tube headers to be useful do you need to change or delete anything along the exhaust like cat delete or race cat or resonator delete etc. Are those mods for sound and if you install long tubes (and tune for them) but NOT delete anything or change mufflers, will you still get gains?
In order for long tube headers to be useful do you need to change or delete anything along the exhaust like cat delete or race cat or resonator delete etc. Are those mods for sound and if you install long tubes (and tune for them) but NOT delete anything or change mufflers, will you still get gains?
Thread Starter
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,599
Likes: 102
From: Florida
A Merc
Yes u still gain without deleting because you are getting rid of the restrictive manifold, but long tubes will gain the most and usually cats are all gone unless it's custom and get high flow cats
