Big Phat Dyno W211 -- 484.1 rwhp/558.78 rwtq
Would I expect to see any more power from using 94 or 104 at the strip?
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.
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?
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?
The Best of Mercedes & AMG
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

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.
Man, to drive RenntechV12's car for a day.......dream dream dreammmmmm
I do have a digital camera and took a pic of the dyno...it looked terrible so I will run to kinkos or something.
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.
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
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.
Issac,
Are you going to try and make it Friday? Would love to see how your beast runs
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!
Last edited by Staff@RPM; Nov 29, 2005 at 10:18 AM.
Just curious.



