dont know where to start so ill just list mods and give a summary

half bridge port- 2500 mi
550/1600
apexi pfc
greddy fmic
stock trailing coils/ fc leading coil
upgrade plug wires (forgot brand)
emissions delete
simplified vaccum
99spec twins
aem water meth
koyo rad
walbro 255 fuel pump
aeromotive fpr

I just had my car recently tuned, first pull in 3rd gear clutch slipped. from then on all dyno pulls were in 4th. i ended up at 333whp @ 10psi but at the top end it was breaking up/ not gaining more power. we went up to 12psi and got 345whp.. it looked like it wanted to gain, felt like it was working harder, just wasnt moving..

turns out leading coil was bad. we were leaning towards either ignition problems or clutch was slipping... no hks twin power and running a stock disc style act clutch.. i swapped the leading coil with th FC coil leading coil.... running through gears 1-2-3 pulls awesome. but if im cruising and throttle it in either 3-4-5 the car just bogs and backfires, doesnt move.. any suggestions what this could be?

ive been having a somewhat harder start up then usual... which leads me to think i may have leaky injectors (primaries since i just put the secondary 1600cc 2500mi ago)

on the pfc my inj duty on cruise avg 20% and reachs up to 93%... idk much but if im only making 333whp isnt 93% inj duty a lot? since im running the 1600 secondaries?

im also getting 10mpg without boosting... is that normal or does it seem like im losing fuel somewhere? smells like im running uber rich but im tuned to around 11.8-12