Ok, I posted before about my issues with the recently installed E11. I have finally managed to get it drivable, but I’ve run into another concern. Apparently, having injector times of around 1.3ms is normal for maintaining idle with 550cc injectors. That’s well and good, but what happens with injection times when you have a 550/1600?

I was adjusting fuel maps last night, and the only way I was able to get my AFR above “RICH” was to drop the injection times down to roughly 0.5ms. Isn’t this way below what 1600s can reliably pulse at? How is everyone managing to get around this issue?

I eventually plan to switch to EV14 injectors, but that is a different situation for a different day.

 

it should be idling only on the 550's of which 1.8-- 2.2 ms real time is normal at idle

the 1600's will come on after staging and so the signal will be more than 0.5 ms at that part of the table

go to fuel setup, be sure staged injection is ticked , and injection mode = sequential
go to fuel set up/ staged injection parameters and be sure you have common mode and a value in the stage bar point, something like 16

 

The car idles around 11.8 AFR at the current injection time. If I go higher, it'll bog and die.

I'm familiar with setting up staging as I've run two E6K and one other E11 car in the past. This is the only one that I've ever had injection times this low.

To address your checklist, though, Staged and sequential are checked. It IS in common mode. I don't stage at bar 16. I stage at 12.

If I go above .5ms after staging, it reads nothing but "RICH" on the wideband. (Brand new sensor). As it is now, if I ease into boost, it will start to load up and run rough, but if I get into boost quickly, it will do just fine. I'm still reading high 10 AFRs where I'm at.

This really makes no sense.

 

what is the vacuum at bar 12?
IE is the staging point around your idle point vacuum ? or is it at 5 inch hg or zero ?
is your manifold vacuum plugged into the correct port and not the middle port on the TB behind the alt?

 

Bar 12 is a couple of lbs into boost. I pretty much never stage at my vac.

I'm running a 13B-RE. My vac port is on the back of the manifold. I'm using the exact same port I was using on my E6K a month ago with zero issues.

 

what are your leading and split values for idle?

 

.5 ms is too low for any injector. You have a basic problem somewhere. Unplug the secondary injectors while the engine is idling and see what happens.

Also check the actual pulse width in the data screen versus what you have programmed in the base fuel map. Once the engine is up to operating temp you shouldn't have a huge discrepancy between the two values, though you will have some offset for air temp and dead time at the least.

 

What values are in the battery voltage compensation table currently?

 

Also, are you sure it's getting up to operating temp? Is there possibly a bad reading from the coolant temp sensor?

 

Sorry for the delay, guys! Just got off shift.

Leading is 8* with a 15* split just in the idle area.

Chris, I'll try unplugging the secondaries after I get up this afternoon.

On the way home from work I noticed another issue. My stock Cosmo TPS is shot. I can be cruising along at steady throttle and it will fluctuate all over the place. I'll see 19 then 16 then 25, etc. Certain areas of the TPS are worse than others. That explains why the car was jumping all over the place once I turned the throttle maps on. I'll work on mounting my spare Haltech TPS this week.

As for my battery compensation, it is currently turned off, so no fuel correction there.

Chris, best I can tell, the temp sensor is fine. I have checked the correction data and it drops down to 0 when the E11 shows that it's up to temp, so I don't think that's a problem, either.