just started playing around with some logging.... someone want to take a look and tell me what you see...if anything? On another log, which was a 3rd gear pull I seen 102% injector duty cycle and 16.8 pounds of boost!?! This is a cobb OTS stage two set up.
I see that you are not using Enginuity or airboy's spreadsheet! :biggrin: Sorry for the unhelpful reply. You need to log time, rpm, and wdc as well. You can get rid of the fuel pump reading. For a log to be useful for WOT tuning, you need to use a gear where acceleration is slow enough to get lots of meaningful data points, but where you can also see the entire range. So use third, find a good straight road, and go WOT at 2k and hold it until redline. Without knowing your knock correction, the timing of your map, boost targets, wdc, or rpm, it is hard to figure much out. Are you driving on a stock map, or something else?
^^ actually, your feedback is helpful. I'll do a few more tonight. It's a stage 2 cobb map, which I've been running forever.
Yeah, log this stuff: engine speed throttle opening angle ignition timing knock correction mass air flow g/s fuel injector duty relative boost pressure Also try to attach the .csv file if at all possible.
102% is not unheard of. I was seeing 105%. Which brings up a point: Tom, I read somewhere that our injectors don't go full open until 125%. Is that true, or a load of bupkus? Because if they go full open at 100%, how in the 'ell do we record over 100%? And if 100% is not full open, could we maybe safely go back to 100% from 5k to redline?
I am not Tom, but 100% is 100%. When it says 100% they MIGHT be full open. 100% means that the signal the injectors are receiving is telling them to open 100% of the time, but what the pinical does at anything over 100% will be a unknown. You could have a situation that at 100% idc you are not even getting 100% of the fuel flow (pinical float). It is kinda like valve float. Russ
^^^ Yup. Whether or not the whole 125% thing is true (I've never heard that one before), I make it point to keep IDCs under 100. Your latest map and logs will show this.
I read it on Nasioc, which means I doubt its veracity. But looking at the logs with reduced IDCs I find myself wishing I had enough fuel to keep the power going on to 6k. :hsugh:
Yeah, it's a bummer that the 2.0 came with such tiny injectors. 18-19psi in the midrange tapering down to like 16psi by redline would make for a much more fun car since the kick in the pants wouldn't go away after 5-5500ish rpm like it does now.
Modded injectors and a fuel pump. But then why not a turbo? And fmic? If only I had that big bucks lawyer job making the fat cash... :roll:
Well, the stocker running at 20 psi and tapering down to 18psi is a fun torque monster. Remeber, I have been messing with my wrx since 01 and I have done the mods that I post about. Like I have said before, there is so much bad info that goes around that people are going to blow up motors. I just get pm's that tell me the stfu cuz I don't know what I am doing. Russ
I would think you could achieve that with enough fuel and maybe a fmic to keep the charge temps down so you don't have to retard timing. Yes? No? Talking out of my butt?
What I just tried doing was running 20-21 all the way to redline, but the turbo just couldn't keep up. That was all on the stock tmic. The stocker is a very good fit for the stock turbo. My ait's never went over a 10-15 degree rise when I was blowing 300 into it. I will have to look for a old utec map to see what kinda of timing I was running. Russ Russ
yes, air temp (I can measure pre and post ic temps) plus use the stock ait to measure pre turbo temps. Russ
