Battery Correction
 

Are the times listed on the y-axis of the map for Battery correction expressed in microseconds, or milliseconds?

I had some dynamic flow testing done on my injectors and am inputting the data for dead times.

its milliseconds, MS is milliseconds, microseconds is abbreviated with a funky looking sort of ys but not really a y, just kind of looks like a y.

What where the results of your testing???

Well, they were pretty even dead time wise.

I'm still milling through the spreadsheets here (just got them a few minutes ago) but its pretty neat. I have a sheet for each pair (RC 750's and bosch 1600's) and a sheet for all together. Flow on the RC's is extremely close, less then .4% variance at 12 volts through ~18% duty up to 85% duty. 1600's were a little sloppier though ~1.0% diff through the same range. But that can be taken care of with the trims :)

Pretty neat stuff, Paul at Yaw Power did them up for me, he's the only place I've found that actually does it. $35 per injector, well worth it for the peace of mind too (at least in my opinion)

EDIT: dead times for the whole set go from about 1200MS @ 6V down to 540MS at 14V........

EDIT 2: I'm just goign to input the dead times for the whole set, the 750's times are fairly close to the times for the whole set, so the compensation should be *decent* (much closer then none at all) when running only on primaries.

even 1% is nothing, I have noticed the battery correction map helps a little at idle when the alternator can't keep up. It should make very little difference at speed. If it does then you need a bigger alternator.

Yeah, I doubt it'll make a massive difference cruising down the road, under load etc. considering how decent it ran with nothing inputted to the correction map. I mostly had it done to verify that the injectors were what they were supposed to be flow wise. This is just an added bonus.

Also, the flow charts give a good idea of what IDC's to avoid since flow becomes erratic above or below a certain percentage. I mean, its pretty obvious that happens, but neat to have an exact chart showing where/when.

Side note, most people call it a "u", and it's the Greek alphabet "mu".


-Ted

also really handy for cranking...