car wont accelerate past 40mph

[Speedstyles408]

hey there fellas got slight issue. i got a 95 ka24de in my s13....i just ran into an issue where i'm not able to accelerate past 40mphs but i'm able to rev and i have no signs of misfire and i'm able to shift into all gears...any ideas?

[jing]

Can you rev past 2500rpm?

[Speedstyles408]

yea i can rev all way

[redsx13]

to start off, do a compression test. also, what does it sound like when you hit 40? does it bogg? any smoke?

[I LUV MY S13]

ecu
msglength

[fcdrifter20]

check for codes

[shiftdrift]

i vote ecu.