Oh there is one more thing I want to try.

Under idle is a table called "*Warmup enrichment Load vs RPM*" which is a developer table I left in there. You'll see that table has this massive spike in the super low rpm and mid load region. I want you set this entire table 128 and see if the hiccup goes away

 

3 & 4

 

Very unlikely it could do anything that wouldn't be caught with normal driving. The patch doesn't disable the code it just makes it walk down a certain path.

 

Enabled 3&4 and got the small low rpm studder once. With no "fixes", its anywhere between 5-10 times and much more noticable on the route I took.

Parked, turned the warmup enrich table cells to 128 in the low rpm area, flashed and havent had a hiccup, jitter, or stumble yet. I'll run it this way to work tomorrow and see how it acts. My lady is giving me the eye and I think my play time is over.

Maybe some others can post their results.

thanks again

 

Ok so for now the best fix is a combo 3 and 4 plus 128 inserted into the warmup table. I think I can understand now why i never had this issue on the 9417 variant since it only had a 2d table of this thing.

 

my warm up table was set to 128 before, i'll now try the two fixes and see what happens, although will have to test monday as I'm away at the moment

 

Unfortunately, its still happening. I pulled over and enabled the 2D jitter fix #2 to make sure I wasnt just feeling the old jitter. But no change. Sorry for the false hope. I dont think the hiccup feels as big now. But its definitely still there.

I can set all of the accel enrich table to 128s and see what happens. I only modified the lower rpm cells last night. They were high. The other cells are low.

If its still happening, I'll pull over and set the 2d jitter fix #1 and see what I get.

 

Im still on the 9417 3d rom, Ive been on the dyno and drive hard everyday. Only problem is the stutter, and the "cut" at 3k rpm. The "cut" mostly only happens in 1st if Im cruising right below 3k then lightly try to go over 3k. The cel goes on real quick then off. The lights also dim.

Also Ive noticed the 3d table needs to be tweeked going back and forth between 93 and e85. I run full time open loop so thats probably why.

 

^^ same here. The only "issue" for me is the hiccup at various rpm and around 70-90 load. Ive never had it cut out @ 3k like you describe though.

Are you running any of the 2D jitter fixes or the 3D jitter tests?

 

ya fix #1

 

i tried fix 3 &4 with the tables at 128 all around and i still got the stutter. i notice that the stutter happens more when the weather is more humid. im going to try the other fixes with the table at 128 and see what happens

 

I hadnt related it to humidity, but now that you say that, I agree. Aside from last night, my previous jitter testing sessions were done while it was pouring rain. But that would explain why I thought it was gone last night, as it was nowhere near as frequent and dry out.

With tests 3&4 still enabled, I disabled 2d fix #2 and enabled 2d fix #1. No change from this morning. Pulled over and enabled both 2d fixes 1&2, same result.

When i first enabled 2d fix #1, the car ran like crap for a few seconds. It was a cold engine, and I bet it was looking for those higher numbers in the warmup enrich vs load map. Im not positive if it was fix #1 that caused that or the fact that I hadnt tried the warmup enrich table change on a cold engine yet.

I'll play some more and see if I can come up with anything.

 

I dont drive in the rain or if the grounds wet.

 

Hmm thats a bummer.

I wonder if the ecu is resetting itself because of the missing MAF sensor. I think I'm going to take a gander into the limp home table and see if the ecu does something not yet accounted for when the maf sensor is unplugged.

 

even so..I dont think that tosses out the humidity possibility. The other day while it was raining I could get in the car and have it hiccup 5-10 times in less than 2 miles cruising around the neighborhood. This morning it happened 5-10 times in 30 miles. (5:30am humidity?) On the way home today, it happened 3-5 times in 30 miles. Dry as a bone out.

We'll see this weekend. Got some rain coming and I'll go out and see if its more prevalent.