cleaned intercooler

[turbo buicks]

cleaned out my intercooler tonite. seems to run a bit better. still get audible knock at WOT right at 10 psi. cant hear it at 15 psi but only as it flashes past 10 psi. i have bad injectors, and a weak ignition (one of the coil towers tested bad). is this my problem? BTW, i dont have a scantool. i know i know dont say it i know i need one. anyone willing to part w/one for say $150 or maybe even $200

thanks