BiTurboAmg

Ok guys went to the strip for the first time last night and ran the car twice. The first run I couldnt get a burn out (forgot esp on!!!) The times were Reaction time .647, 60ft 2.061, 660ft 8.464 and the et was 13.061 at 104.770Now the car was in s mode in comfort suspension, I have the k2, lsd and a set of 275/35/18 bfg drags. My gal was in the car as well and weighs 105lbs. The second run I have a great burn out and turn esp off and keep it off. The times are reac .276, 60ft 2.178, 660ft 8.541, et 13.102 mph 107.498. The thing is I was racing a c5 z06 both times the first he missed a shift and ran a 13.9 or something the second time he put his gal in the car and ran a 13.3 and he has an air intake and maybe exhaust not much else? What is going on I seem to be slower then some of the stock e55's. The track sits at 5320ft above sea level. I had the rear tires at 25psi and the car sat over an hour between runs with the hood open. Its about 85-90 degrees here. I also had about a half tank give or take a line. Now I didnt power brake or anything light goes green and I went. Also some of the guys there told me that they do not prep this track with vht or something like that. There was a ford lighting with a blower and nos running a 12.26 all night. Is my car broken or do I just suck as a driver? My dyno from cory was 544hp and 598lbft so I do have a weaker e55 to start with. My stock dyno was 444hp and 476lbft

Barada

Not real sure, but 1st observation would be that 90 degree weather is not the best temp for the track.


-Barada

Jakpro1

Dude, don't sweat it!! These things get KILLED at high elevation.

My track runs 4300ft and with K2 and Drag Rads only could eek out mid 12's.

It's just life at high elevation with the beast.

Now when you run at Moroso or Sacramento (elevation like 5 ft) and run 13, then I would say you have problems.

If there is any GOOD news, it's that at high elevation, you are running super rich which for running NOS is suh-weeeeetttt. Wink wink...

PS....per NHRA table, at sea level you ran 12.3. That ain't shabby considering 90+F.

http://www.nhra.com/tech_specs/altitude.html

newton22

Like Jak said, hot temp and high elevation will knock even whole seconds off your time. Though, even corrected, it still seems a tad slow?

DerekFSU

Bad elevation but I don't know the correction. Did you spin your tires on the launch? I'd run those tires around 17psi and pump the fronts up to 45psi.

BiTurboAmg

Thanks Derek, i had the front at 40psi and i did spin to about 60mph. The car felt like it really ripped out of there with esp off but as you can see the best times were with esp on? Why are my trap speeds so low. I see all you guys with k2 in the 120's and im happy to hit a 107? How is it that the c5 z06 is right there with me? He was 13.3 on bald streets and his wife in the car with minor mods, like air intake, and ecu tune??? Will the v12 tt do better at this elevation?

moldowan

first off a c5 zo6 can run mid 12's all day and almost bald street f1's can hook just fine.
90 degree day plus 5K in altitude is what is getting your 13's
I ran my cls55 for the first time in san antonio an ran an 12.8 stock, i found you MUST slowly get into the throttle to avoid roasting the tire at launch. when i got into it hard the next run i spun the tires 100 yards down the track and got a 14 second run -LOL
LAUNCH IS EVERYTHING at the track, experiment a bit and see what works best. remember practice makes perfect and with out it you will not see improvement on a consistant level.

red00lght

Don't feel bad...you still beat my CL600 times that I ran at Moroso at sea level (13.2)....however, after a dyno run Renntech believes it to be a bad intercooler pump so hopefully getting that fixed will bring the horses back!

Fikse

whow.... spun till 60MPH?? go again and just stomp on it from the line with ESP on.... then report back.... if you really spun till 60, none of your numbers mean anything at all....

dragonAMG

I second that.

BiTurboAmg

Does this sound off? Like I said the car seemed to rip out and was going but you can tell when it really grips because its almost a second boost feeling and then you really start moving. I need to check with my passanger but I am almost positive with no esp the car spun to 60. Dragon what do you think you have a k2 like me. With out esp and on a track that does not prep at all how long would you spin if you just jammed the gas? One of the guys I know said his friend wont even run on this track because it sucks and that his car is a 9.4 second car and faster and doesnt feel the track can handle his car. Like I said he said they dont use vht or whatever that stuff is called.

dragonAMG

I can definitely see it spinning for a while on a non-prepped track. Don't know about 60mph though. I would naturally just release the gas to gain traction, so I couldn't see my car spinning to 60mph. On a non-prepped track you defintely need to leave your ESP on. Even on a prepped track, many have said they still are getting best times with it on. You have to really know how to manage your launch if you're trying to run with it off.

04E55 AMG

From my own experience, I would say it is close to impossible to spin up to 60mph with DR's as you have posted. Having had a K2/wLSD car on DR's it would hook up like you are launching into space. If you can go to streetfire.net under MB and you can see some of my passes and burnouts with DR's. As you can see in my sig, the car hooks hard and fast

btw - Was in Atlanta on business last week and spoke to the new owner of my car who went ahead and installed the TB that I was about to get from Cory. He has bested my time in the 1/4 to 11.3x and over 125mph.

He also has has 4 speeding tickets over the past 6 months and his insurance has gone up over $1k

Trevor

Here's what I think is going on.

On my car in street mode with the DR's and front tires set at 35 psi (cold) my traction light will flash all the way up until 45-55 mph and the car would feel slow. I KNOW I'm not spinning at that speed. After thinking about it the 275 DR's are slightly larger than the stock rears (same size as the fronts though). To try to simulate the OE size difference I decided to increase the fronts to the max reccomended 41 psi cold and try things again. Since the change traction control has been MUCH more realistic and doesn't step in except for really low speeds at full throttle.

It seems like the something that small wouldn't be noticed by the ESP computer but my traction light doesn't lie. I'm just glad I was able to keep the pressure on the sane side while keeping the ESP out of my business. I didn't want to run any less than 35 psi (cold) in the DR's and I didn't want to over-inflate the fronts to more than 41 psi.

Rock

Spero, that's just a crazy time and trap speed. Did he post it on drag times?

DerekFSU

You don't need traction control with DR's. Put them at 17 psi right before you run and do a GOOD 8-10 second burnout. Then, floor it. Unless your track is HORRIBLY prepped, you'll hook immediately. I ran it in dyno mode, went 80% throttle at launch with the extra 20% right away plus nitrous without traction problems.

Ted Baldwin

..............does your car have the new load limiting ECU software from mercedes? Check on this.

Ted