e55 baller

Well my car is FINALLY healthy...earlier with a Evo cooling system leak I put down 394/520 at the wheels. Stock it put out 401/439 at the wheels. My mods are in my signature.

Today I took the car back and held my breath. The car has so much power I could not really feel the difference before and after but racing friends cars illustrated that my car seemed to be fixed. 27K miles. 2003 model.

1st run in dyno mode. Temp 73 degrees all runs. With the CUT-OUT CLOSED:

473.44/530.00

#2 CUT OUT WIDE OPEN

480.24/545.93

Then I found out that one side of the cut out was no longer opening past 1/4 inch (must have been doing this for a while as the car seemed to be quieter than summer) to I set the other one that was fully working to 1/4 inch open to match it and.....

#3 484.10 rwhp 558.78 rwtq

I think if I get the cryo kit to get intake temps lower I may even see 500 rwhp.

Needless to say after all the disappointing dynos I think the car is running finally right. The A/F ratio was between 11.5-12.0 and the dyno plot looks VERY smooth. The run was done in 4th gear so the car was going ~177mph at the cut off.

Hopefully I will have a nice 1/4 time soon, if not early in '06...looking for 122-124 traps.

Vadim @ evosport

Baller:

Right On!

Are you running 93 or 94 octane?

e55 baller

Just 93 octane

Would I expect to see any more power from using 94 or 104 at the strip?

Rock

Very nice numbers. From the modifications you listed I would expect that you will see those trap speeds.

Hey, I will tell you two words before Derek chimes in, Drag Radials!!!

E552006

Very Nice
Congrats.

e55 baller

I WILL definitely have to get BFG DRs. I had them for about the first 10K miles on the car and they went fast. Even with stock HP/TQ I could rip a 20-40 foot streak with the BFGs...which is still better than going sideways for as long as I wanted to.

medici78

Congrats on finally having your car running correctly!!
That's a ton of power!!

Ted Baldwin

.........simply amazing! What is the most impressive to me is the torque figure. You are going to kick some behind at the drag strip.

Ted

merc655

Wow. Congratulations on such an abnormally BEASTly E55. I can't wait to see some of the quarter mile times with those kinds of numbers.

WayneE

Congrats on the numbers... but cutouts?

blackbenzz

Do you plan on hittimg the track anytime soon? MIR is done with test and tune. Let me know when you go to capitol or wherever, i'd liek to see that monster run!

E552006

Please tell more about the exhaust cut-outs.

e55 baller

I will have to post some some pics of the cut outs although there are several on this board. It basically dumps the exhaust PRE muffler. I guess you could do it before the CAT for more power but RPM in NY hooked it up for me. I paid $1400 installed. I think the parts though are like $200-500.

With the cutouts open the car sounds like a new Z06 with the fuse out or a Cobra. It turns heads...within the matter of 2-3 seconds with the flip of a switch in the ashtray it goes to quiet as can be. I drive 90% of the time with it off though because it is loud.

I am suprised how much of a difference it made -- 11 rwhp and 28 rwtq.

Here is the cut-out thread
https://mbworld.org/forums/showthrea...exhaust+bypass



here is one pic off a google search....
http://www.thirdgenracing.com/projects/cutout/

Grumpy666

Can you post the two dyno plots, please?

e55 baller

sure...I will get it done tomorrow. It shows from 50-177 mph in 4th gear that max HP was at 160-165 mph and max torque at 50-75mph. The torque curve was very very flat. The HP basically goes from 250 rwhp at 50mph linearly to 484 at 165mph.

When I looked at the RPM based chart it basically hit max hp at 6K rpms - basically redline.

VelocitE55

Nice numbers, that car must be a lot of fun!

E55_POWER

Wow! I'm beginning to think that Evo headers are pulling more power than the Kleemann ones. ECU/Pulley is pretty much the same with all the respected tuners.

BenzoBoi

suhweet numbers!~!

Ted Baldwin

...........actually the pulley's are not all the same. The Hennessey pulley which he has in his car is of significantly larger diameter. The Keemann and renntech ones are the same size. In my G55, I had to use a smaller water pump pulley in order to make the large Hennessey pull fit. Being larger, the Hennessey pulley is reported to generate more HP. I gained 40 more Hp and 40lbft of torque more when I switched from a custom pulley, the same size as Kleemann/Rentech to the Hennessey one. LINK
The middle graph is the Custom pulley plus ECU, plus headers. The top graph is the Hennessey pulley with the same headers and no further ECU changes.

...........as for headers, I don't completely understand how much HP they make. I understand you have to remove the stock resonators to gain any appreciable HP.
...........I have no experience with Evodport headers specifically. I am ver interested in the exhaust cut outs he did.

Ted

04E55 AMG

Hey Bro,

Whats up with these fake timeslips from M5 owners? We will just have show everyone this Friday the real deal.

Tried calling you a few times. Hope you had a good turkey day with the family

vrus

That is some awesome power you are putting down!! Congrats on getting it running properly.

You just proved what a huge factor the cooling on these cars is with respect to power. When you are modified you have to have a good cooling system and it looks like the EVO kit does its job.

That thing will be an animal on the road and should tear up the 1/4 mile pretty good.

vrus

That is one question I've been trying to answer for a while..

Don't forget though.. E55Baller has the HENNESSEY PULLEY which is 7" in diameter and will generate an extra pound or two of boost so the dyno #'s should be stronger with the Hennessey pulley compared to the Kleemann or EVO pulley.

None-the-less, the combination he has is a good one as shown by the dyno #'s.

Grumpy666

Save your money. On a street car, the open/close cutouts do little more than make noise when in the open position. To truly utilize them effectively, they would have to be operated by a servo motor that is controlled by input from a pressure transducer in the exhaust system. This would not be cheap.

baller's HP gain was probably a result of bleeding a small amount of pressure through the 1/4" gap in the cutouts. Most of the exhaust was flowing through the mufflers.

If you want to improve your exhaust system, do something similar to vrus. He has the right idea, although I wouldn't go bigger - just more free flowing.

eclou

Nice numbers! Please post the dyno if you can. But $1100 for installation of cut-outs? Ouch.

Jspeed

E55 baller: Did you use QTP cut-outs? What diameter were they? Am quite interested too. Remember reading before about your power loss issues with the cutouts fully open ... did you manage to solve this problem? Awesome dyno figures BTW!