Ok I've upgraded to an apexi intake and added a down pipe, the car already had an apexi exhaust. My question is will this combination of mods lean the engine out? Or am I safe?

 

Yeah you're getting there. I would get the ECU remapped or buy an aftermarket ECU immediately. Don't want to take a chance of leaning out, summers right around the corner also.

 

How much boost are you getting?? I have dp and cb and a drop in k&n, i've been "ok" for now but I also run 94 octane and premix. I agree with crazy jake! if you are getting the boost spikes i am(13-14 psi) you are there! my engine has been able to take it but who knows for how long??
You either do not get hard on the boost or just break down and upgrade!

 

get an ecu....one more mod will surely lean you out.

 

Yea I ran 3 or 4 mods for a while without an ecu. I was getting spiking as high as 16 lps once!! I just got tierd of being scared to punch the gas. go ahead and get the
ecu. But cosider this a reprogrammed ecu is a done deal ,no adjustments cam be made. My stage 3 m2 makes my car run rich.Now I got to get a better ecu(programmable) so that I can tune properly.You may want to take this under advisement before making your purchase