Need help with Tuning plz
 

Hey guys I have an 87 Turbo 2 mods to follow in sig. Well i finally got my Innovate lm1 wideband and I have just started to mess around with my safc as i had it all set to zero. At idle my car was reading about 11.5-11.9 so i turned the afc down -22 which got me to 13.5-14.0 car still idles great doesnt bog out or anything. Throughout i had it set at 2k -10 and 3k zero as at freeway cruising im getting a steady 14.7-15.1. Now on WOT I have it set at 4k +10 5k +10 and getting 11.5-11.8 steady now with 6k and 7k set at zero I saw a reading that jumped to mid 12s so i Decided to add 10% again but it went down to low 12s added another 5% to it and then my car started to Stumble and as if it was hitting fuel cut. Now my question, is the stock injectors starting to max out at 15%? If i tune it down to 10 the bog is gone but im still reading 12s and id like it to be in 11s if possible. Would upgrading the fuel pump help with the injectors or should i just jump up 680s or 720 injectors?

injectors
 

you should definetly drop in a set of 680 gsl-se injectors or 720 greddys . aftermarket fuel pump with a re-wire would definetly help as well. you are probably maxing the injectors. how high are you boosting ?

ohh wow lol somone posted hehe...yeah im running stock levels but since my turbo is not ported yet....Im getting boost spikes upwards to 12-13psi prolly what causing my car to run in the 12s afr...well I think im going to get the fuel pump first before the injectors and see what turns up. im going try and hook up my DVOM to my injectors and read the duty cycle off them and see what really goes on.