JAYCL600

I have been using autotap on my CL600 the last few days data logging IAT. Today I added ignition timing advance to the graph. What should the ignition timing advance be at WOT. Sorry for sharing this here, but there arent any Cl's datalogging that I know of, thanks guys.

Jason

jangy

DUDE!! I just posted on getting a datalogger last night. I am looking at the DL1. Can you post other options and or features of any you know?

JAYCL600

it does a whole lot more then i need it for. www.autotap.com should have plenty of info. Renntech would like us 600 members who have had increased their boost to think that we need their IC pump upgrade, but I knew that my 200.00 spent would verify that there are no issues with my IAT's, hence this has been verified as my IAT's plummet every time I go to WOT.

jangy

HAHA!! I like you. I'm on it. The Dl I was looking at runs $1000 and then you have to buy sensors. Thanks for the link. I'll check it out.

jangy

Looks interesting. I will definitely look deeper.

cicbenz

That Autotap stuff looks pretty cool, I would buy it if I knew more about computers,besides turning it on and burning cd's

jangy

Dude, i am a computer IDIOT!! That is my biggest worry with all this ****.

cicbenz

I know how you feel, do you know how long it took me to learn iTunes , sometimes feel like a loser,considering i'm young,so I should be good with computers

DFW01E55

E55JAY has exceeded their stored private messages quota and can not accept further messages until they clear some space.

I don't measure timing advance. My focus is IAT, engine temp, O2 sensors, rpm's and speed.

JAYCL600

just dumped all of my old messages, sorry. If the engine senses high IAT's it will also retard timing.

chiromikey

as well as dump a butt load of fuel.

i ran autotap and it really helped by giving tons of info. my only disappointment (and it's a little one) was that the sample rate is not constant. because of this you need to acquire as much data as possible to try to fill in the gaps before you can make an accurate assessment of what's going on.

really worth it when diagnosing problems...like an mb recall or something.

goalie_k

So what were the IAT's under full load?

JAYCL600

with 65 degrees ambient under WOT i was seeing 110-130 degrees farenheit

ChicagoX

Could you please clarify w/ more info about sample rate?

Thanks.

AdamG@NorCal

Hi all,

Heres a peek at a SL65 and E55 with a RT ic pump system on the autotap.

The Autotap sample rate is in 5 second intervals.
(sorry..SL65 only showing 145mph due to excessive bacon)
Please feel free to PM me for more charts

SL 65



E55

chiromikey

as adam stated, the sample rate is at 5 second intervals (i knew it was poor but i didn't actually know it was that bad). this is much too far in between to get immediate useable data and therefor one needs to collect a LOT of data to be able to piece together the whole picture.

consider that a 4th gear wot dyno run only lasts for about 5 seconds and you can see the problem.

mclarenm8d

Does the sample rate for an individual channel improve with autotap if fewer channels are being logged? In the past I have had to scale down my expectations of how many channels I could log for each run to get the sample rate for a channel to improve. As an example, if the sample rate is 1/4 second, if you are logging 4 channels you'll only see one channels activity every second.

This effect was pretty frustrating when I was trying to track ignition retardation during gear shifts - hard to capture the change in ignition timing at the moment the car is completing it's shifts.

JAYCL600

if you close the table and everything on the screen but keep open one preprogrammed graph you can data log at an extremely fast sampling rate

chiromikey

i no longer have the datalogger to play with so someone else will have to take it from here.

mclarenm8d

Cool! That's good news. Me thinks I will be buying some software in the near future :-).