C55 Dyno Questions
01-20-2009, 11:13 PM
#1
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C55 Dyno Questions
Next month im going to take the 55 to the dyno. I know about putting it in "Dyno Mode" but my question is what gear should i be in for the best results. From what i have read in other threads it looks between 3rd and 4th. Is one better than the other?
Anything else I should know; seeing as i have never even been to a dyno place
Anything else I should know; seeing as i have never even been to a dyno place
01-21-2009, 12:07 AM
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C55,SL55,C63
3rd gear. Dyno mode is a must on a C55 or the car will not work on a dyno due to traction control issues. Even with traction control off it wont work on a dyno if its not in dyno mode.
What mods do you have to your car? Based on my car on a dyno dynamics dyno stock I put down 291whp and 305wtq.
What mods do you have to your car? Based on my car on a dyno dynamics dyno stock I put down 291whp and 305wtq.
01-21-2009, 12:12 AM
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01-21-2009, 12:49 AM
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C55,SL55,C63
Stock 291,
ecu 309,
headers airbox, 333,
heavy wheels 315,
exhaust 336,
custom renntech ecu 348,
hiflow cats 354.8
I should note that i run my car on a mix or 91oct and 100oct so most dynos are done with 95oct. If I ran pure 100oct I would put down 360whp. Ive put down 389whp on a dyno jet not to long ago.
even with all these mods i can only muster up a 12.94 1/4 mile run due to this Arizona D/A. My corrected times are 12.5et. At the Mercedes track meet I was only able to pull a 13.1 or a 13.2 with blown out primary cats. I'm not a very good drag racer though.
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01-21-2009, 02:02 AM
#8
do you have the stock wheels somewhere? you should see what you dyno with the stockers and try running at the track with them....would be interested in seeing what you run and dyno
01-22-2009, 12:08 AM
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Depends on what mods we are talking, Currently I put down 354.8whp and 360wtq.
Stock 291,
ecu 309,
headers airbox, 333,
heavy wheels 315,
exhaust 336,
custom renntech ecu 348,
hiflow cats 354.8
I should note that i run my car on a mix or 91oct and 100oct so most dynos are done with 95oct. If I ran pure 100oct I would put down 360whp. Ive put down 389whp on a dyno jet not to long ago.
even with all these mods i can only muster up a 12.94 1/4 mile run due to this Arizona D/A. My corrected times are 12.5et. At the Mercedes track meet I was only able to pull a 13.1 or a 13.2 with blown out primary cats. I'm not a very good drag racer though.
Stock 291,
ecu 309,
headers airbox, 333,
heavy wheels 315,
exhaust 336,
custom renntech ecu 348,
hiflow cats 354.8
I should note that i run my car on a mix or 91oct and 100oct so most dynos are done with 95oct. If I ran pure 100oct I would put down 360whp. Ive put down 389whp on a dyno jet not to long ago.
even with all these mods i can only muster up a 12.94 1/4 mile run due to this Arizona D/A. My corrected times are 12.5et. At the Mercedes track meet I was only able to pull a 13.1 or a 13.2 with blown out primary cats. I'm not a very good drag racer though.
You did an excellent job of documenting what each change netted! What are your trap speeds?
