okay im gonna try asking again .....my car is bogging down like it has no power in low rpms only 0 - 3000. and only when it is in gear......when its in neutral it revs fine and very responsive.
And all the sensors are fine also there are no IM/TB leaks!!!

 

my car does the same shit, but its because it has an LS tranny.

 

the motor is a jdm d15b /w stock d15b tranny.....any other ideas

 

check your fuel filter, spark plugs, wires, dizzy...I dunno bro thats a tough one. I'd personally start with a new fuel filter then go on from there...

 

yeah spark plugs, fuel filter,wires, o2, cat, and all sensor are new and bought at time of swap.....so could it be somthing with tuning maybe? or sience it does it when its only in gear somthing to do with the clutch? forgot to add has a 9lb FW and 6 pluck clutch........

 

try checkin the grommets in the valve cover for the plug wires. if theyre not sealed right water/oil can get down in there where ur spark plugs are n cause it to bog a lil. myne did that too (especially on humid days). i pulled the valve cover off n the wires out. cleaned the wires n put the grommets back in with some silicone n was good to go after that. use some wd40 to get the water off the wires (if there is any) and get some brake clean to skwirt down into the holes there to get rid of any oil that mite b in there.....if this isnt the case then im stumped on this one....but it sounds like something to do with the ignition system.

 

when this happened to my gsr, the wiring harness was the culpret

 

Is the vehicle throwing any codes ? (check engine light)
If so, what codes ?

 

check the distributor timing.