MpoweredM

Hey Isacc, here is the picture of your cut outs for ya...Click the picture to see it larger...

MpoweredM

Sorry, let me fix that.

MpoweredM

Here you go bro..

RennTechV12

You MUST MUST MUST, use high octane racing fuel!!!!

You have a forced induction car, forced induction cars benefit the most from high octane fuels. I have seen a difference of as much as 40rwhp from using race gas in a turbo car. It has made a .3-.5 second difference in the 1/4 mile with a 3-7mph difference in trap speed.

e55 baller

RennTechV12 ,

I will try it in the Benz when i goto the strip. I used to use 116 blue in my Supra and as you said it make a BIG difference. It let me go safely from 21 to 30 psi -- the difference of about 100rwhp.

I used 116 once in my modded S4 and w/o it I lost by 3 cars to my friends 911TT X50...with it we were dead even from 20-100mph.

I just didn't know if it would also help the E55 ...but now with my boost cranked up it has to. Have you used race gas in your Benz's?

e55 baller

Curtis --- thanks man for the pics! ...we need to get my dyno scanned and posted ASAP. I have 2 scanners in the house that are both f'ed up.

RennTechV12

That's all I use in all my Hi performance cars. Usually anywhere between 100 and 109 octane, always put unleaded in the Benzes (of course).

Grumpy666

Do you have a digital camera?

E55_POWER

Sad if they are forging them. I personally don't care if it runs 12s or 13s. It should be for personal achievement rather than trying to prove a point.

Friday should be fun.

My phone, man I left it at a relative's house for 2 days before we realized where it was.

e55 baller

Grumpy666,

I do have a digital camera and took a pic of the dyno...it looked terrible so I will run to kinkos or something.

Jakpro1

Race Fuel

Per Cory at Kleeman, you are spot on....it retards the timing even further than ECU mod and here comes more HP....gotta drive it around a bit though. Don't pop race gas in at the track....car needs to recognize and retard to be effective.....again per Cor.

Man, to drive RenntechV12's car for a day.......dream dream dreammmmmm

medici78

OK, but what would happen once you switch back to regular pump gas?

Grumpy666

If your camera is so equipped, you need to be in macro mode (close up).

Grumpy666

Actually, this is backwards. Higher octane fuel will cause the ECU to pull less timing, so the timing will be advanced compared to your regular fuel. This assumes that there is more timing available in your WOT fuel maps.

Grumpy666

The ECU will start pulling timing as soon as it detects the onset of detonation.

AMG BLISS

e55 baller,

Incredible numbers. Do you know if the rating is SAE or STD?

I hope to get close to those numbers if I can finally decide on which system go with, either the Kleemann headers and full exhaust or the EVO Sport headers. I am also considering a new system from Super Sprint, complete with headers and full exhaust.

e55 baller

Grumpy -- thanks for the advice...here is a digital pic of the dyno. Given the antics of late I want to let you all know I deleted my full name from the dyno...no sense in having potential MB dealers creating black lists.

A few things to note -- temp 70-73 on the runs. Humidity 12%. Barometer = 29.99. Basically a good "air day"

This chart illustrates a 4th gear pull by mph from 4X mph to 177mph. The bottom is the A/F, the redline is 13. The bottom one is 10. The green pull bouncing at 12.0 at redline. Is that too lean? It was with the cut-out (one side) wide open. I don't see an A/F for the best -- pull #3 below

Grumpy666

The lower RPM range of the first run seems to have a problem - tire slippage, operator error, or something else. This means the torque value for the run is invalid. Since this is the cutouts-closed run, I would expect the peak torque would be higher than the other runs. Bummer. FYI - I would not have accepted this result from the dyno operator - they should have repeated the pull.

e55 baller

Grumpy,

I noticed the first pull was associated with tires burning a bit...by 105mph it looks as if the slipping was non existent.

Since tq=hp at 5250 rpms I am not concerned with your concern however I appreciate your comments. I would suggest that the torque is invalid for the first pull from 40mph to 105mph but after that there is no proof of tire slippage.

Needless to say I am not too torqued up with the dyno operator. In any event a open vs. closed cut out was not my main objective. My objective was a measure of rwhp / rwtq to see if my car was healthy.

If you want to get a cut out its up to you all. All I know is it sounds bad *** and I can go quiet in 2 seconds.

e55 baller

Meant to ask the board...why would the A/F go 0.5 leaner? Because the cutous are open? Leaner mix = more power ...makes sense. Is this on the edge of safety? I wish I had an EGT gauge.

04E55 AMG

Issac,

Are you going to try and make it Friday? Would love to see how your beast runs

Grumpy666

I guess I could have been a little more clear. What I was trying to say is your peak torque number is invalid, since the peak value occurs in the lower RPM range. Had there been no tire slippage, I suspect that number would have been higher than 560 lb-ft.

eclou

An AFR of 12 or less should be ok but the EGT would be the easiest idiot light to have, unless you can pull data from the knock sensors. Regarding the leaner AFR with the cutouts think of it like a shower- air is "hot water", fuel is "cold water". The cutouts may allow more air to flow (fuel stays the same) so the shower gets "hotter" or leaner in the AFR

Staff@RPM

Hey Isaac,
Glad to hear your car is back in healthy running condition! Nice numbers on the dyno! As far as the cut-outs go they are Stainless steel blades in the valves and with the stainless piping, parts come out to about $600. The rest of the install is the welding, but more importantley the wiring up to the cabin and the placement of the switch - it has to look proper in an E55, no big red toggle switch floating the middle of the center console! Can't wait to see some 1/4 mile numbers!

Jakpro1

Okay, we need to have a high horsepower competition of E55's. I already lose to Baller with 476, but wondering if anyone has topped his 480+.....man, that's sweet. Well, Gid_e_up is at 619 crank from Kleemann, but maybe we could make this a rear wheel only thing.....

Just curious.