Try leaning out the AFR another .2 or so and see how the car reacts. Then try adding some more boost in the midrange.

Depending on how you set-up your fuel map, you will need to fine-tune the fuel again after upping the boost

 

^^ where's rpm? Looks a little bit on the rich side to me for that level of boost. What fuel?

 

It's 2byte rpm right by his AFR.

He is on lovely California 91

 

What's the difference between 2-byte RPM and regular RPM ?

 

ok will do...to be continued...sheesh...hardcore tuners stay up late^just a little more accurate rpm just like 2byte load...i've logged regular rpm and 2byte rpm and it makes easier on the brain to interpolate while ur tuning. i hate interpolating

 

o just a quick though...what if i just up the boost first...wouldn't that lean out my afrs also? by mid range i assume u mean 4000-5000ish rite?

 

not necessarily... depends what AFR values are in your higher load cells that you will be hitting under higher boost. Normally raising your boost will lean you out some... but not always.

 

if you're leaning out with boost it's because:
a) you're running low on fuel pressure
or
b) your fuel map is leaner in the higher loads (big mistake)

 

+1 on that....

thats why most fuel maps are a tad bit richer up top... unless you are a newbie lol

 

yeah, I've had more than a few customers send logs back and it's obvious that they really cranked up the boost, we're talking about picking up 40kpa load over the previous logs However, it didn't hurt the car at all because I taper the timing/fuel down at higher loads.

 

yep... im already a member of that club

and then they really crank it up, wonder why they are knocking, and ofcourse its my fault lol.

 

It's always the tuners fault j/k, totally j/k

 

you are right... it is always our fault ... we should foresee the 28 psi on pump gas. What we should do is issue MBC's with our flashes and have some sort of lock on them so they cant be moved lol.

glad im not a tuner though...

im a rom adjuster

 

guys... just a quest. abt afr's...
i adjusted lean spool to be disabled at 7800 rpm...
then adjusted afr's to 11.5 at 3d gear
the prob i hv is that afr's are leaner by 0.5 for each gear lower than 3d (2nd 12,
1st 12.5) and richer by 0.5 for each higher gear (11 4th, 10.5 5th...), didn't try
6th...

any1 had this prob before??? what would be the possible cause?? cure?


Krgds+

 

Did the AFR issue happen after the lean spool mod or did it do it before?