finally got time to tune up and work on the car, i did a tune up; (plugs, oil & filter change, cleaned out intercooler, rad flush, fuel filter, set IAC and TPS, etc. etc.)
then I install a VDO boost gauge and a knock sensor and took it out for a spin
cars spools up slow then boost goes up to only 7psi and levels off and the knock gauge lit up like a X-mas tree, also got code 43
so i cleared the computer of all codes and went back and re-set IAC and TPS, lowered boost a few turns, and took it back out for a spin and still could only manage 7psi, the knock gauge did not register any knock this time, but i still get code 43
i cant find any obvious vac leaks, MAF tested fine as did coil pack and wires, cars idles relatively fine about 550-575rpm in park, TPS is .43 @ idle and .48 @ WOT, oil pressure and water temp are fine, oil looks good and no bubbles in radiator so i dont think a blown headgasket is the cause
so what is causing my code 43?????? and why am i only getting 7psi of boost?????? What am i not thinking of, what else am i missing, what else can I check?
my mods are:
TA 49, 36lb bluetop injectors, 160 therm, 10mm magnecore wires, tranny cooler, K&N filter, valve cover breathers (pass & dr side), poston headers, engine tiedown, solid mass air pipe, 93 chip everything else stock
then I install a VDO boost gauge and a knock sensor and took it out for a spin
cars spools up slow then boost goes up to only 7psi and levels off and the knock gauge lit up like a X-mas tree, also got code 43
so i cleared the computer of all codes and went back and re-set IAC and TPS, lowered boost a few turns, and took it back out for a spin and still could only manage 7psi, the knock gauge did not register any knock this time, but i still get code 43
i cant find any obvious vac leaks, MAF tested fine as did coil pack and wires, cars idles relatively fine about 550-575rpm in park, TPS is .43 @ idle and .48 @ WOT, oil pressure and water temp are fine, oil looks good and no bubbles in radiator so i dont think a blown headgasket is the cause
so what is causing my code 43?????? and why am i only getting 7psi of boost?????? What am i not thinking of, what else am i missing, what else can I check?
my mods are:
TA 49, 36lb bluetop injectors, 160 therm, 10mm magnecore wires, tranny cooler, K&N filter, valve cover breathers (pass & dr side), poston headers, engine tiedown, solid mass air pipe, 93 chip everything else stock