sr20det issue

[driftermic]

hello all, so my sr wont rev past 3 to 3.5k so i checked my ecu for codes an i got code 12 an 34. code 12 means maf an 34 knock sensor. my question is this does the knock sensor prevent my engine from performance, also how would i know if my maf is messed up becuase a few days ago i repaired my car an i floored the car an it pulled for a second then the car started sputtering, i found out that a coupler on my fmic came loose i fixed it an now the car wont rev past 3k if i disconnect the maf it dosnt make a difference to the engine, it sounds like a maf prob but how would i mess it up with a min of driving, any insight on this is appreciated. thanks

i found the problem

[slider2828]

your mafs is probably about 15 years old. Things break. Check the voltage and stuff via fsm, and the knock sensor will pull timing if it thinks its knocking hence your problem of reving... No sense in speculating, just fix it.