another twin turbo e55 amg is born at BIP
MBWorld Fanatic!
Joined: Mar 2010
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From: San Diego
F-250
What was machined / fabricated? That entire center piece? I dont see that in the original picture of the intake cracked in half. Did they CNC a complete center section? Of just the plugs?
Out Of Control!!
Joined: Feb 2003
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haters crazy
The square pieces that block the short runners in the bottom piece of the pic. Shouldn't cost much.
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From: Knoxville, TN
2005 E55
MBWorld Fanatic!
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From: Australia
09 C63
It all depends on your set up. On a low revving motor I would definitely not go short runners. If the car revs more then 7000rpm then I'd look into short runners.
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Super Member
Joined: Feb 2013
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From: SE MI
2005 Mercedes E55 AMG
I've tested long and short runners on a turbo set up (everything the same besides intake manifold), longer runners produced much better mid range and a better power graph. It had a higher horsepower spread and average horsepower vs rpm over the short runners. How ever the only benefit the short runners produced was slightly up top. It had a linear power graph and a higher peak power. Peak power was also higher in the rev range.
It all depends on your set up. On a low revving motor I would definitely not go short runners. If the car revs more then 7000rpm then I'd look into short runners.
It all depends on your set up. On a low revving motor I would definitely not go short runners. If the car revs more then 7000rpm then I'd look into short runners.
Member
Joined: Mar 2013
Posts: 200
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From: Knoxville, TN
2005 E55
What the **** are you guys talking about? No one that changes from a supercharger to a turbo is concerned with midrange torque numbers. Drag racing is all about peak horsepower. These cars make plenty of torque with the supercharger. Therefore, short runners are king. But whatever you guys think.
Last edited by 2319; Jul 8, 2014 at 12:26 AM.
Super Member
Joined: Feb 2013
Posts: 659
Likes: 25
From: SE MI
2005 Mercedes E55 AMG
What the **** are you guys talking about? No one that changes from a supercharger to a turbo is concerned with midrange torque numbers. Drag racing is all about peak horsepower. These cars make plenty of torque with the supercharger. Therefore, short runners are king. But whatever you guys think.
Former Vendor of MBWorld
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From: Atlanta, GA
E55 AMG on Ethanol-Meth; 600rwhp BMW M5
Yes, some of the information I will disclose, and some I will not.
After closing one set of runner ports, it made absolutely zero difference. As you can imagine, I am super pissed about this. At this point, it could be anything and I am losing patience FAST!
After closing one set of runner ports, it made absolutely zero difference. As you can imagine, I am super pissed about this. At this point, it could be anything and I am losing patience FAST!
Former Vendor of MBWorld
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From: Atlanta, GA
E55 AMG on Ethanol-Meth; 600rwhp BMW M5
It is not tuning, we verified that by the help of Jerry which we greatly appreciate. I cant say how he helped, but I can say that it ruled out the tuning issue by what him and Tony did with the file.
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From: West
2005 E55 Wagon
Sorry to hear, but hang in there and keep at it. The silent majority is routing for you!!!!
MBWorld Fanatic!
Joined: Jan 2009
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From: Atlanta
2006 E55 AMG
Changed plugs and regapped them
Changed coil packs
changed fuel pumps
changed sender unit assembly
a ton of tuning time
built new mid pipe
re-located the wiring harness
labor time
etc etc.....
This all cost MONEY!
Last edited by chawkins2001; Jul 9, 2014 at 03:35 PM.
Super Member
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From: seattle
1990 300ce supercharged and intercooled
This may be a silly question but do you have the logging equipment to watch what is happening. A real scope. Is timing being pulled? Is the throttle closing? It might be that you are hitting a tq limiter if the engine is just pulling back. I assume fuel pressure is stable. No misfires I take it?
MBWorld Fanatic!
Joined: Jan 2009
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From: Atlanta
2006 E55 AMG
Whipple, this car is been live tuned on bip's dyno dynamics dyno. he is watching all the parameters.
I made over 800rwtq on spray and this setup is only in the mid 500rwtq range right now. fuel pressure is dropping slightly but not enough to cause the stuttering. I have new 340lph pumps and 1000cc injectors in there. that's good for a lot more than what the car is putting down.
I made over 800rwtq on spray and this setup is only in the mid 500rwtq range right now. fuel pressure is dropping slightly but not enough to cause the stuttering. I have new 340lph pumps and 1000cc injectors in there. that's good for a lot more than what the car is putting down.
Super Member
Joined: Oct 2008
Posts: 837
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From: seattle
1990 300ce supercharged and intercooled
The reason I ask is if they are logging from the obd port then that could easily be to slow to catch the problem. The refresh rate is pretty bad.
Is it breaking up or just pulling back on power?
Is it breaking up or just pulling back on power?
MBWorld Fanatic!
Joined: Mar 2010
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From: San Diego
F-250
When will the go/no-go decision take place? RBJ is showing some very good progress, is there anything there that can help? Although you cite the tune as "not an issue" the whole ECU thing has come up. Can that ECU even do what you are trying to do? Is there another controller (piggyback / alternate model) that might be less finicky?
