Trouble with Hesitation and sputtering

[wally_]

I have another question for you guys!

My SR20DE is running with troubles, when im driving normally there´s no problems but when i floor it and reaches 5000rpm the car starts to lose power and hesitation appears just like a misfire and barely revs to 6500 with intermitten sputtering and hesitation, i checked plugs and everything fine im on BKR6E, checked fuel pressure and is ok 35 psi on idle and without vaccum of the FPR 43psi, changed the rotor and cap and did nothing, no check engine light on.

Another thing that i noticed is that when the car is cold and im cruising at 5th gear and then downshift to 3rd at full throttle the sputtering and hesitation is HORRIBLE!


The car is actually without VTC, but that never did anything weird on the behavior of the car before.


Any help would be helpful!
Thanks!!

[corn322]

Whats your fuel pressure at 5000 rpm under load?

[wally_]

didn´t check it, i guess that knowing that i´ll find the cause of my problems right?