Took my car to the dyno, I'm kinda disappointed.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
Took my car to the dyno, I'm kinda disappointed.
My car has the secondary cats removed and the resonator removed. I also installed a magnaflow X-pipe in the process. Everything else is 100% stock.
Car put down 395whp and 437wtrq SAE on a Dynojet in 3rd gear ( 4th would get to the top speed limiter ). A/F ratio was pretty decent up until 5Krpm where it would DUMP fuel...It would max out the widebands limit at 9.0:1. Is this even normal?
I expected about 20-30 whp more than this due to dynojets tending to read kinda high. I notice that my car would loose power pretty badly after 5.5Krpm sometimes yet sometimes it would feel fine. My SC belt shrieks sometimes when I let of the gas for a split second, do you guys think my belt could be slipping? I know my I/C pump is fine cause I can hear it operating for a few seconds when I shut the car off.
Anything I should look for? I got beat by a 6-speed BMW 335 coupe with 375whp/395wtrq today.
Car put down 395whp and 437wtrq SAE on a Dynojet in 3rd gear ( 4th would get to the top speed limiter ). A/F ratio was pretty decent up until 5Krpm where it would DUMP fuel...It would max out the widebands limit at 9.0:1. Is this even normal?
I expected about 20-30 whp more than this due to dynojets tending to read kinda high. I notice that my car would loose power pretty badly after 5.5Krpm sometimes yet sometimes it would feel fine. My SC belt shrieks sometimes when I let of the gas for a split second, do you guys think my belt could be slipping? I know my I/C pump is fine cause I can hear it operating for a few seconds when I shut the car off.
Anything I should look for? I got beat by a 6-speed BMW 335 coupe with 375whp/395wtrq today.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
Is there a way to check without a scanner? I don't have one at the moment. My pump seems to be working though, at least I can hear it.
Last edited by GT-ER; Jan 10, 2011 at 09:07 PM.
Member
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From: Mississippi
996 Guards red / 2008 Hayabusa / 2004 E55 AMG
I don't know a way to check it without a scanner, maybe someone with more knowledge on the subject will chime in. I will tell you this though, no chance of making good power at 9.0:1.
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Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
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From: Puerto Rico
2005 E55 AMG
I know 9.0 ( or actually, less than 9.0 ) is ridiculous. I don't even know how it doesn't misfire ( I guess having two plugs per cylinder helps ).
I can hear my intercooler pump standing in front of my car with my engine on, is this normal?
I can hear my intercooler pump standing in front of my car with my engine on, is this normal?
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MBWorld Fanatic!
Joined: Apr 2006
Posts: 8,137
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From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
Where are you located? If you're in the DC Metro we can meet up and use one ofy scanners. You should probably buy one of your own, if you plan on keeping this car. It's
a must have IMO.
a must have IMO.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
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From: Puerto Rico
2005 E55 AMG
What scanner would you recommend?
MBWorld Fanatic!
Joined: Apr 2006
Posts: 8,137
Likes: 26
From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
There's lots to choose from, but for my needs I use the Autoenginuity for data logging. I also just picked up a Scangauge II, for real time, in-car monitoring (but no logging)
Member
Joined: Nov 2009
Posts: 98
Likes: 0
03 e55 amg
My car has the secondary cats removed and the resonator removed. I also installed a magnaflow X-pipe in the process. Everything else is 100% stock.
Car put down 395whp and 437wtrq SAE on a Dynojet in 3rd gear ( 4th would get to the top speed limiter ). A/F ratio was pretty decent up until 5Krpm where it would DUMP fuel...It would max out the widebands limit at 9.0:1. Is this even normal?
I expected about 20-30 whp more than this due to dynojets tending to read kinda high. I notice that my car would loose power pretty badly after 5.5Krpm sometimes yet sometimes it would feel fine. My SC belt shrieks sometimes when I let of the gas for a split second, do you guys think my belt could be slipping? I know my I/C pump is fine cause I can hear it operating for a few seconds when I shut the car off.
Anything I should look for? I got beat by a 6-speed BMW 335 coupe with 375whp/395wtrq today.
Car put down 395whp and 437wtrq SAE on a Dynojet in 3rd gear ( 4th would get to the top speed limiter ). A/F ratio was pretty decent up until 5Krpm where it would DUMP fuel...It would max out the widebands limit at 9.0:1. Is this even normal?
I expected about 20-30 whp more than this due to dynojets tending to read kinda high. I notice that my car would loose power pretty badly after 5.5Krpm sometimes yet sometimes it would feel fine. My SC belt shrieks sometimes when I let of the gas for a split second, do you guys think my belt could be slipping? I know my I/C pump is fine cause I can hear it operating for a few seconds when I shut the car off.
Anything I should look for? I got beat by a 6-speed BMW 335 coupe with 375whp/395wtrq today.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
MBWorld Fanatic!
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From: Philly
997TT, C192 GT63, W464 G550, MS Plaid
bleed your secondary cooling system. if there is air pockets in it IATs will go up and car will dump fuel to compensate
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Joined: Jan 2004
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From: Salt Lake City (but not Morm)
2003 E55 & 2014 GL550
+1, We have had guys say that the car felt modded after popping on a new belt after 40K or so on stocker.
One of the hands down easiest things to do as well. There is a DIY on the forum. I can do it in under 60 secs now.
398 is lower but not end of the world lower bro. Also stock ECU will begin to dump fuel to "save the engine" after 5k. Your does look a bit extreme though!!
Here is a car very similar to yours
Here is an upper scale stock beast. Check his air fuels, they dump but not violent like yours. Check your IATs for sure.
One of the hands down easiest things to do as well. There is a DIY on the forum. I can do it in under 60 secs now.
398 is lower but not end of the world lower bro. Also stock ECU will begin to dump fuel to "save the engine" after 5k. Your does look a bit extreme though!!
Here is a car very similar to yours
Here is an upper scale stock beast. Check his air fuels, they dump but not violent like yours. Check your IATs for sure.
MBWorld Fanatic!
Joined: Nov 2004
Posts: 6,697
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2005 E55
here is my stock car,400whp but on a low reading dyno!.I dont get why some of these cars are way lean up top?is the dyno guy not going wot?
http://img38.imageshack.us/img38/8720/e55dyno.jpg
http://img38.imageshack.us/img38/8720/e55dyno.jpg
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From: Colorado
07' SL65, 04' E55, 03' Evo8, 08' GSXR, DSM's...
I would think your numbers are low especially since this was on a Dynojet. I am 100% stock and on my buddies "heartbreaker" Dyno Dynamics dyno, i put down 391WHP and 442WTQ.
Aaron
Aaron
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Joined: Dec 2010
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From: W Coast & E Europe
08 E63, 07 RS4, 04 GT3, 10 LR4, 02 Pajero
Dynos vary so much from machine to machine and from day to day I wouldn't be too concerned with the numbers. The guy with the 335i could have added weight to his trunk or been in a different gear, both of these and more can skew dyno numbers massively. Go try another one if it's really bothering you, or if the car feels down on power then have it checked out.
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From: Fairfax,VA
06 E55
Senior Member
Joined: Jan 2009
Posts: 327
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From: Isla Verde, Puerto Rico
SRT-6
Saludos GT-ER
I can lend you my dashdaq. It reads the IAT's, boost, well a whole bunch of useful information. We just have to meet up sometime. Maybe at Predator Performance. I can't make it to the Sneaky track day in Ponce so that is out. I will be in Salinas on the 23rd.
Les
I can lend you my dashdaq. It reads the IAT's, boost, well a whole bunch of useful information. We just have to meet up sometime. Maybe at Predator Performance. I can't make it to the Sneaky track day in Ponce so that is out. I will be in Salinas on the 23rd.
Les
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
Saludos GT-ER
I can lend you my dashdaq. It reads the IAT's, boost, well a whole bunch of useful information. We just have to meet up sometime. Maybe at Predator Performance. I can't make it to the Sneaky track day in Ponce so that is out. I will be in Salinas on the 23rd.
Les
I can lend you my dashdaq. It reads the IAT's, boost, well a whole bunch of useful information. We just have to meet up sometime. Maybe at Predator Performance. I can't make it to the Sneaky track day in Ponce so that is out. I will be in Salinas on the 23rd.
Les
Thanks for the offer BTW, but I just bought a scanner ( Autoenginuity, waiting for it to arrive ).
Hope to see you around.
Newbie
Joined: Oct 2009
Posts: 2
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cls63 amg, cl55 amg,sl65 amg
BTW, you guys are leaving MAJOR power on the table with that over rich lambda. Proper recurving of the fuel tables alone would net you a large gain..............
Senior Member
Joined: Jan 2009
Posts: 327
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From: Isla Verde, Puerto Rico
SRT-6
Les
