Dropping spark & less than WOT at WOT - Whipple Mustang

[ProTools4]

built / stroked 4.6 2009 Mustang w small pullied whipple and Long tubes @ 15 PSI



all kinds of funky behavior at WOT
*see screen cap or datalog*

-Dropping to almost no spark advance
**** -1 to 2.5 degrees

-Full throttle is not full throttle
at about 3500RPM the ECT pulls back to 45ish % throttle

-issue seems to be near 190% load above 13 PSI

???? is there a MAP MAX that I am hitting ????

[ProTools4]

Anyone ?

[BNA]

Try raising your cylair wot multiplier to 1.9 and cylair max multiplier to 1.99 .

[ProTools4]

ok,

but if the car is making 210% load
do they need to be set over that ... say 225?

[Exley]

I would take another look at your Driver Demand table. I've never seen one maxed out like that before. Has that worked for you before?

[PST]

ok,

but if the car is making 210% load
do they need to be set over that ... say 225?

1.99 is the highest number you can put in their. And it basically tells the computer to accept whatever load it sees. I usually put 1.99 in both of those.

Also (and I haven't looked at your tune), but make sure you turn off the MAF based cylinder air anticipation logic. Your calculated load should come down to more reasonable numbers if that wasn't off before.

[BNA]

Try setting all the throttle body settings back to stock and leave the wheel torque error maxed out for now. PST any reason for disabling the anticipation logic? My understanding is that it helps transient conditions when the LOAD W/FAILED MAF Table is set up correctly.

[ProTools4]

Same result @ wot!
Erratic choppy wot and low /holes in spark advance!

Etc / tb set to stock
Driver demand stock

Cyl wot /max @1.9
Cly anticip = Disabled

BTW the mustang moves out at 50% TP
19deg spark solid commands a linear tps opening afr 11.s solid and smooth

[wayno]

in the log you posted its commanding too much fuel, probably blowing out spark.

your tune you are commanding too much fuel.

what are the mods on the motor besides the whipple.

[PST]

Try setting all the throttle body settings back to stock and leave the wheel torque error maxed out for now. PST any reason for disabling the anticipation logic? My understanding is that it helps transient conditions when the LOAD W/FAILED MAF Table is set up correctly.

With forced induction cars especially, it makes dialing in the maf a pain in the ass. The anticipation logic references the failed maf table, which if incorrectly setup will skew your measured lambda results. You have to get MAF dialed in properly before you can setup the failed maf table and turn anticipation logic back on.

OP, it sounds to me like your MAF table and commanded lambdas are pretty far off. One of the two, or both, are commanding too much fuel.

[ProTools4]

For the poor soul that gets stuck like i did...

Try disabling P0068 !!!

make sure to post back if that work for you or not :-)