well i have a 88 csx-t with a 2.5 c block 20% over pistons 255 walbro fule pump afpr intercooled 2 pice intake i have been working on this car for 3 years and im soo close to getting the car out on the streets but car back fires under a load and some times the car dose not like to be put under a load when that happends car shakes so i redid the timeing and it is set at 12 new plugs gap is at about .28 .29 i even turn down the fule prusser to 48 that worked some what but it seem like i loss hose power it still back fired under a load so i turn it back up too 51 that didt help any when i had the fule prusser set at 55 it ran good untill it backfired car would stall some times i dont know any thing else i can do here are some of the things i replaced temp sensor map sensor tps senor coil plugs o2 sensore car is showing a code 34 i look it up and it is a speed control solenoids soo i tryed too look it up on auto zone too see how much it is cant find it i still need to wire in the charged airtemp sensor i hope some one can help im done playing with it thanks guys