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Need some experienced help. anyone seen this sort of STFT feedback loop where it just sweeps between full rich and full lean, both banks? Newly built motor, forged rotating but stock dimensions and...

After doing some of the tune changes to no avail and chatting offline with Murfie and another 3.7l guru I logged for the misfire. and it appeared to be genuine. I did a lot of wiring diagnostics and...

So here's two logs. One where it ran perfectly fine as long as I passed through 50% throttle and was very eager to rev. did back and forths in a parking lot incase it cut injectors again. and then...

Murfie,
I am excited about the advice you bring as always - the speed density driving throttle opening matches the experience. I am also stumped! Can we go back a few steps on how to get to this...

while waiting on the hive mind, it occurred to try softening the driver demand to see if it improves throttle match. Will update with news on that later.

I'm at an impasse on this. simplify the back story, narrowed down part throttle issues to the stock pcm glitching out the o2 readings. put in new pcm using ford FDJS software, re licensed tune to...

Here's the layout that was running while I logged. It's got a lot of histographs but I'm only focusing on the torque based ones at the moment. the time mark is 16:49:56 through 16:50:05 or 5:38...

Here's a tune file and log that works pretty good except for the throttle roll. It was discovered early on the 3.7l really hates having the DD table messed with. None of the files I've reviewed have...

I would like some help: What are the right PIDS to diagnose having the pedal feel go super numb after getting ETC, DD & torque tables settled for the rest of the tune. I haven't messed with distance...

Oops. I see the issue. I thought both paragraphs were related to OP only - getting it above drivability. I definitely want to play around with it at some point to see if there is a bit more low-end....

I tried the VCT profile you drew - just to and from work. It didn't like being so aggressive in the low rpms. stft's would shoot way up and the car would bog - really similar to when the Pedal counts...

Last post for the night. I drew the lines you demonstrated and then compared it to the other procharger tune I have. They are actually of a similar shape with your design being smoother and slightly...

I did some comparisons from Sunday and if the positive knock is retard then this is what the file would look like to bring it back in line. Again - I think positive knock here is retard and I went to...

This is more of a experiential question. I ran a log to session pulling a bit of spark timing from the 5k range. The values were conservative. Then ran another log and it showed double the amount of...

When I read this last night it made more sense than it does now that I'm messing with the actual tune file. The change you describe makes sense - the OP is crossing over into drivability and causing...

Final log for the day. This is everything discussed to date on VCT, Fuel trims and updates to Spark for those new settings. I believe that the log is indicating that some timing be pulled but wanted...

Here's the log. The idle adapt is down to +/- .02 across the low rpm range which is really encouraging. I think the MAF transfer needs a little tweaking. Also, No knock retard anywhere!

I tightened all the vacuum connections and re-torqued/angled the intake plenum. Took a drive which was very pleasantly surprising. Then dumped the log on accident. I'll re-log it again in a few but...

It's been a busy week. Here's what I came up with studying the images you posted last week. Also included is the two fastest runs from Sunday's autocross. Would you say the Knock in these logs is...

I broke this into two screen grabs. 15 covers the part load based values - this I think I could feel it hunting between 4 & 5 at part throttle. I data logged it but there's not time tonight to pull...

Thanks for the clear description - I'm sure it took a while to put this into reasonable chunks. I've got about half of it understood to agree with the two changes you suggested and I'll chip away at...

Here's the ideas I had for the VCT timing.

It was a test. I'm open to ideas for improvement. Stock holds it steady at a conservative value and I dropped it by one on exhaust. On intake it drops a bit but I'm not sure how aggressive to get. I...

I noticed the belt slip as a drop in maf lb/min. Goes from almost 38 to just over 36. Lets try tightening belt first. Its been a while since I checked it. I didnt lower spark values much, maybe .5 at...

I got a chance to email support tonight. Last night I made 5 passes at the drag strip. I logged using the ngauge which was useful for watching spark and so forth. I've posted the best run. I took an...