ive gone and confused the crap outta myself. Lean spool is still turned on, since i wanted to lean it out a tad before i went and made it even richer by turning it off.

this is a stock turbo/stock injector/TBE/ETS FMIC/LICP car on 24psi peak (normally...but apparently i was missing some boost today).

on the 3rd try i finally have a working wide band, and first logs showed 10:1 for the majority of a pull. thats what happens when the previous owner has someone write a map without a wideband

i have previously smoothed out the hellishly choppy timing maps, which cleared out all of my knock when sticking under the super rich afr's. today i leaned out a block of the 220 and 240 load columns from 3000-6000 rpm (see result below, increase was 0.4 in each cell)


nothing really changed from 3-4000 rpm as you can see (why?), but i managed to induce knock during spool (see below)


obviously my AFR's still need a decent bit of work, but im now confused as to whether my timing is too aggressive, or if im still just too rich during spool.

any advice would be greatly appreciated

 

Could be both too much fuel and too much timing. Pull 2 degrees and lean it out to 11.0 at the very least.

 

10.0AFR is definitely enough to induce knock. Try leaning it out to 11.0-12.0 at spoolup and see if the knock goes away. Seeing as your knock was so minimal, itslikely that leaner AFR will remedy your issue.

-Jamie

 

that's what I was thinking, but on the 3 previous pulls with the same timing and basically 10:1 across the board, the knock wasn't there, that's what's throwing me for a loop.

 

Excessively rich AFR's can be very inconsistent.

-Jamie

 

pulled a little more fuel out trying to focus on 3500-4500 for now, and turned down my peak tq timing a degree since i guess 6 might have been a tad aggressive for now.

i also discovered that the genius that "tuned" this set the lean spool start to 1500 and stop at 3500 almost like trying to turn it off i guess? not sure if that what is giving me a headache here or what (i dont think so)?

of course its supposed to rain for like 4 days now

 

Exact same thing I was going to post.

 

It certainly isnt helping. If youre going to disable lean spool anyways, just go ahead and disable it and retune afr. If its set to stop at 3500, your map from 3500 on up wont need much work after you disable it. Just sub-3500, with some transitioning into 3500 and up.

 

if the humidity drops a little later tonight ill go try the new map...tuning fuel is friggin nerve racking the first time you do it!

 

Keep in mind that sometimes the knock sensor will pick up something that isn't knock. Just because the car knocks a tiny bit on one pull doesn't meant that it will ever do it again. Lean that 'ish out! With the value showing 10:1, it is maxed out, meaning you are likely in the 9.x:1 region.

 

A sudden jump in AFR's can also cause knock. I notice your AFR changes 1 whole point from 11 to 10 just before the knock starts.

 

blah, back to the drawing board. changes i made made zero change in fuel. cleared out some of the knock, but forgot to copy my changes over to the other two timing maps.

car definitely felt faster tho. hell of a lot more work to do, this isnt as easy as i thought lol

 

some progress maybe?

seems to not be bottoming out the wide band anymore. any knock is 2 counts or less and not in every pull (its 95% humidity again tonight). still obviously needs more fuel pulled.

BUT the fun part is while making a map with a JDM RS mivec map on it, i discovered that i have an unknown bastard of a mivec map on the car from the previous owner/tuner, that is no where near stock! oh joy.



this is the bull**** fuel map i started with by the way.

 

Switch to the tephra rom man. I don't know why people still stay with the stock rom. The resolution on that map looks terrible to my eyes now!

Does anyone know of a situation where lean spool has an advantage over just old school proper fuel map tuning? I really don't know. The first thing I did was turn it off when I started tuning.

 

im not gonna switch to tephra until i clean up some of this mess, less columns will hopefully make it a tad easier to get a handle on it all.

theres a thread about tuning with lean spool.