What did your MAF reading say in lb/min? Do you have a inline fuel pump? Also, can you log the injector pulsewidth with EASE? If so check the duty cycle % on those injectors.

Sounds like you might be maxing out the stock pump or injectors(doubtful)

Add fuel above 4000rpm in the PE table and see if that helps. Be very careful though.

 

One other thing what does your fuel pressure do at WOT. Does it start dropping at higher rpms?

 

i vote for the pump also. it is good that you are working your way into the tuning and watching everything.

 

i say check your presure before you add fuel with the PE mode. really sounds like a pump to me.

 

Checked my fuel pressure at wot in second gear after that happened, and it stayed steady at about 61psi. Didn't check 3rd though. I do have the inline pump that ATI supplies, but haven't verified if its working lately. I know it used to keep up when I had the FMU last week.

 

cant stop now , got to find the problem.

you are going to have to take it back up in 3rd and watch that fuel presure, also log the MAF

 

Yeah, now is the best time to do those WOT blasts.(Late at night. ) Well, it's late here anyway.

 

XLR8NSS- my maf reads 40.6 lb/min max. (still using the 8psi pulley) With my MAF readings I'm pretty sure the injectors aren't maxed. Havent logged the duty cycle though.
I'm gonna have to verify that the inline pump is working, and do a third gear test I guess.
Is it possible for the pump to keep up in 1st and second but not 3rd?

 

are you loging both the wideband and atap? both of mine were set up for the serial port but i was able to get this adapter that goes from a serial port to a usb port and it worked for the fjo. it wouldn't work for atap though but i have an old version of atap.

 

your fuel system will see an increasing load in each gear, top of 3rd will definately be the most load.