Ka24de won't accelerate fast just pops

[Schassis/raw]

Ok so I've been trying to figure why my ka24de won't accelerate if I press slowly it seems to be fine but if I press hard it will just pop and sputter and I've checked the ecu the codes its throwing are 34 and 45 not sure the deal with the Ks is but the leaky injector dosent make sense I took out the rail and turned the key to 0N to prime the fuel pump but there were no leaks and the injectors are only about a year and half old haven't had a problem with them this whole time my afr is reading weird numbers as well at idle is like 10 and sometimes in full rev it stays at like 20 wtf has anybody had a problem like this before plz help if so

Mods done flywheel / clutch , walbro , hotcam , cold air intake , blaster coil

[Schassis/raw]

What are some of the problems that make my ecu read leaky injectors and also if I had leaky injectors wouldn't I beable to see it when I take the rail off

[blkvrtswp]

Any chance you have a leak between the MAF and throttle body? 1st thing I would check. Might be sealing ok when under light throttle but with more throttle it might flap open and closed - just like a boost leak on a turbo engine.

I had a similar sounding problem once on my NA SOHC and the MAF had popped off the cold air intake piping coupling half way. Didn't see it until daylight the next morning....

Or perhaps a bad gasket on the intake manifold or a vacuum line rotted and fell off - check them all.

Good luck!

[Schassis/raw]

Thank for the advice but problem got worse now it won't even stay running whatever it is is for sure electrical cause I've tired 3 different mafs it will not idle at all I can start it up but it barely revs and its rough as all hell so I think ima give it a break for awhile and put my sr20 back together thanks for the assistance