accellaration issue

[badlittlemojo]

i 'm having an issue with sputtering at 3400 to 3700 range on my ka. i've checked all the vac lines, replaced the charging system, replaced fuel system(minus the injectors) and replaced the maf sensor. i heard the coolant temp sensor could do that so i'm switching today( mainly because the gauge flutters while accel.) what else could could cause this issue.

[Mikester]

Check your timing. Also replace your plugs cap & rotor.