just upgrade with new 36lb injectors, from 24lb and replaced sample tubes (from blue 102 to red 103). 76mm C&L MAF. Engine wont even stay running with a 1500 rpm surge. Tried clocking MAF, checked for proper installation of sample tube, relocated MAF and even messed with fuel pressure. NO help... Reinstalled the 24lb injectors and sample tube.. Car runs like a champ. WTF.. Rules out IAC & TPS? 306, 76mm MAF, 70mm t/body, f cam, performer rpm intake and heads, 255lph pump, longtubes 5 speed sn93 s/c 4lbs. boost and 12:1 fmu (want to remove FMU) Is this the right sample tube? Any suggestions?