i need some ka help

[zenki14]

so i have an 89 hatch with a 97 ka with intake headers exhaust and a jwt ecu its been actin weird today out of nowhere it wont rev past 2000rpm searched and everyone says maf but whats bothering me is when i rev it up it sputters then shut it off it wont start like the battery is dead and wont crank then ill let it sit itll crank and start runs fine til its fully warmed up then after that it starts sputtering ant 2000rpms im hoping its not wiring connections are good on the battery so what do you guys think

[240WES]

Did u check ur spark plugs and make sure the (neg) cable on the battery is snug on the terminal.

[lady$luck]

the not reving past 2k sounds like the maf as you said, i was having a similiar problem ended up being a ground issue with my maf. but it would NEVER shut the car down.. i would pull the loom off your maf harness double check the wiring and the connection at the plug.

[zenki14]

battery terminals are clean and on tight still not sure why its killing my power ill try another maf does it matter if i get one from an s13 or s14 ka or are they all basically the same