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I hate to kill the moment bro, but I think you need to log again and/or convert the units.... I don't even think Brad with his 8 million hp C63 has 2700g/s of airflow... It should be in the hundreds...
I normally like to have the following fields set up as I find them the most important:
Commanded AFR
Actual AFR
RPM
MAF (g/s)
Throttle opening
Ignition
Being **** fuel trims are nice to have, but only if I sniff a problem. Air temps I only really look at if timing looks off.
The reason why throttle opening is important is because sometimes I've found that even at WOT at the pedal in the car, the TBs might only be at 78% at 5000rpm (like my car for example) and that should be factored in if trying to benchmark.
Also, a tip - make pulls in manual mode to ensure that you get the very last drop of rpm to 6700. I can see your car short-shifted on line 674 in S mode probably. Annoying, i know. Sometimes, you might need to do several pulls of the same gear and rpm range just in case it didn't get recorded the first time.
(and if you round to just 1 decimal place, it wouldn't do any harm )
I'll fish out a P31 C63 later when I get home and try to draw some comparisons. I think....from memory that around 6000-6200rpm is around 270g/s @87% throttle. But...I think that car was at higher elevation. Oh yeah, is yours at sea level, or....?
I'm half asleep reading this post, but I'm almost positive that those numbers aren't adding up....my guess is that it's not a clean log (sucks, i know - I find I need to do several redline pulls to get a good picture of what's going on). I'd have thought at around 6000rpm you should be in the high 200's... 357 even at 6700rpm would indicate a strong motor for the mods..
25.5 timing is good....i wouldn't say aggressive until you're in the 28s./29.
I'll have another look tomorrow when i'm more awake
Perhaps take a few more logs to validate the readings....?
I'm looking at a 2013 C63 log (a fairly strong log/car - 470whp - dynojet - headers - USA car) and at 6600rpm it's ingesting just under 330g/s. At 6100 it's at 310g/s.
I guess right now, your throttle opening would help a lot, because it might be that it's opening a few more degree's at that lower rpm breakpoint than some of the logs that I've seen. I see other logs of cars in the high 200's (285-290g/s) at around 6000rpm, although altitude is probably a factor. I'd expect you to be at near enough full throttle opening at 6100rpm though...
I'd love to log some UK M156 cars with my HP Tuners scan tool as it's precise down to a T, whereas while the Torque App can be very useful for general knowledge and data, I find that it can be inconsistent at times and it leads me to question the data. Take most of the stuff I say here with a pinch of salt, because most of the logs that I see are from Bluetooth phone apps....actual data logging equipment logged data is hard to come by.
Your MAF readings (if correct) is really good.
My car would flow in the mid 270s on a good day. Although I am at 5700ft above sea level, if that makes a difference.
Is there anyway without opening up the manifold to find out what throttle bodies I have?
mind you this log is full bolt ons without cats.i would say I'm around 485whp right now.my last dyno was 443whp before doing headers.
the thing is my car was a renntech car when it was bought from a dealer in miami.the pictures they showed me had the renntech airbox installed.i had a dealer in md find me the car so it bounced from Florida to md then to Boston and at some point a dealership took the box.(spent 3 months fighting and almost got a lawyer involved) and my car had renntech badges and tune on it when I got it.
so I'm like 50% sure the previous owner had the tbs installed also as he also bought the 10k dollar renntech wheels that were on the car at one point.
Your MAF readings (if correct) is really good.
My car would flow in the mid 270s on a good day. Although I am at 5700ft above sea level, if that makes a difference.
I'm really close to sea level and the temp now is really cold so the air is really dense.
I would assume the colder air and sea level makes a huge difference so you can' really compare endless we both ran together .
Perhaps take a few more logs to validate the readings....?
I'm looking at a 2013 C63 log (a fairly strong log/car - 470whp - dynojet - headers - USA car) and at 6600rpm it's ingesting just under 330g/s. At 6100 it's at 310g/s.
I guess right now, your throttle opening would help a lot, because it might be that it's opening a few more degree's at that lower rpm breakpoint than some of the logs that I've seen. I see other logs of cars in the high 200's (285-290g/s) at around 6000rpm, although altitude is probably a factor. I'd expect you to be at near enough full throttle opening at 6100rpm though...
I'd love to log some UK M156 cars with my HP Tuners scan tool as it's precise down to a T, whereas while the Torque App can be very useful for general knowledge and data, I find that it can be inconsistent at times and it leads me to question the data. Take most of the stuff I say here with a pinch of salt, because most of the logs that I see are from Bluetooth phone apps....actual data logging equipment logged data is hard to come by.
11-02-2017, 01:11 PM
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