So far the mods are
s4 t2 engine and drive train in a 1988 rx7 se
rtek 1.8
T04B hybrid 53 mm turbo built by me with stock turbo manifold with porter waste gate
boost holding strong at 9 to 10 psi
racing beat 3 inch back to 2.5 inch y pipe. No boost creep
550 primaries and 720 secondaries.
Front mount innercooler with 2.5 inch pipe
safc tuner
4 puck clutch
Walbro 255 fuel pump hard wired
Innovate wideband
no porting on the engine

Ok went to day for the first pulls after installing my wide band and getting the car legal haven't drove it in 2 years. Let the car warm up to temp and took her out. Put 91 octane in it then started my pulls in 3rd gear. Scared me to death when it hit 14.0 afr. Safc was set at 8% correction. Turned up to 11% and helped some. My 720s pretty much maxed out. I do not know duty cycle. I lost alot of knowledge over the last couple years. So the question I have is what injectors do you recommend for my build?
Are they low impedance or high? My last build before engine popped I had 720s and 1200s should i go that route again? Any ideas on hp numbers with this set up? Thanks for you help guys.

 

is your Rtek set to handle 720/720? if so you could move the 720s to primary and up the secondaries to 830-850cc. that should support about 325whp even with the stock ECUs limitations without overworking the corrections. even with everything ideal i doubt you are hitting that with your current setup and boost.

with corrections its best to not use small changes when you know it is running lean, start richer than necessary and then work backwards.

your current setup should support about 275whp with the corrections maxing out the injectors to 85% with the chipped stock ECU.