rt338b

iTrader: (4)

I have put together a typical ls microsquirt system and for the life of me I can't get the afr to idle above 11.5. I am using 80lb deka injectors with a GT45 5.3 and have the base at 43 but no matter what I do to the ve table it doesn't change. I have made sure the ego is good and even relocated it to 12" from turbo out. The firmware is correct and all sensors are calibrated proper The tune is one from denmah that was loaded from sloppy site. I have tried all that I can think of and am looking for advise from someone that has experience with these. Probably something I am overlooking but I have checked closely. If necessary I will send the squirt back to efisource or someone that thinks they can help me. Also the fuel pump ground circuit quit so I have been just hooking up the fuel pump seperately which shouldn't make any difference. Thanks to all that can help

yenkomike

iTrader: (2)

mine was doing that and i found the idle timing needed to be lowered. it was around 18* and i lowered it to around 15 in the idle area i was running in. and reset my idle and tps afterward and now i am around 13 13.5 afr idling.

denmah told me to create a little low timing pocket for the idle and it helped a ton.

bajabooie

iTrader: (7)

try this

gui67

Do you have a msq and a datalog?

denmah

iTrader: (2)

what is your required fuel amount?

try changing it to 3.15 and 3.50 and refire and try to change the fuel numbers

are you under "25" on your VE table near idle? the injector looses resolution at lower openings and has trouble, changing required fuel amount usually can fix this

gui67

It might be a dead time problem: if it is too high, no matter how you decrease the fuel quantity needed for the engine, it will use the value of dead time added to the value needed calculated by the table. So it adds an amount of fuel even if you put 0 in the VE table.
Did you use the right time for your injectors?

rt338b

iTrader: (4)

Itried the lowering of timing and that didn't work also tried advanced idle control also to no avail. Will try the new required numbers and see if that helps. The dead time is at 1.300 as the injectors call for and yes I did see the low(retarded looking low) numbers that seem to adjust it some but that didn't seem to be right. Thanks for input as I will continue to try more things. just seems odd that some people are not having to adjust this bizarre to make them work. Hoping something works as I am at wits end chasing a problem that doesn't seem like it should exist. I will try to post a MSQ tommorrow as I am new to figuring out how to post things. Thanks again and keep the suggestions coming as I am willing to give them a try.

rt338b

iTrader: (4)

Oh by the way my required fuel was 5.3 with 2.65 and my Ve was 21 around the entire idle area

denmah

iTrader: (2)

i have problems sometimes with people having idle issues and it seems like when required fuel is under 3ms, and they are on gasoline and 80s

rt338b

iTrader: (4)

so do you have any suggestions? Do you want me to set it to 3.15 and 1.58 and hope for best or would I be better off with smaller injectors? I had a huge surging problem till I dropped base pressure to 45.

denmah

iTrader: (2)

change required fuel
very easy to do
see if its fine after that

most of my pumpgas cars i have used 3.15 ish number and i have no probles with great idle resolution and i can make 600+wheel

rt338b

iTrader: (4)

will do. You ever have surging problems? If so was pressure the cure Thanks

yenkomike

iTrader: (2)

I have had surging and found the timing needed smoothing near idle

rider12693

I am having the same problems with my jeep but when I try to go in and change from 2.65 to 3.15 it will not let me change it.

rt338b

iTrader: (4)

Well tried taking it to 3.15 and up to 3.50 no improvement

yenkomike

iTrader: (2)

mine is set at 3.00 and the idle is at 25 in the fuel table.

just checking but is your engine above 160 degrees so you are out of cold enrichment.

rt338b

iTrader: (4)

Yes wue is done so no more enrichment. Knew I was going to have to sort things out but this is wrecking my brain and at my age I am about out of brain lol. Keep the suggestions coming as I know someone has the right fix it just isn't me. Rider you have to raise or lower the upper number to change the lower number then burn if good

rt338b

iTrader: (4)

Here is a idle log

denmah

iTrader: (2)

can you post the tune, or the screenshots of the fuel and timing table?

Forcefed86

iTrader: (4)

Pull up your gauges and look at the injector MS. While your at idle and tell us what it is. Then pull up this screen with the motor running and adjust the required fuel.

I run .3 in my required fuel field with 160lb injectors and idle just fine.