Corvettelt4

Hi everyone,I'm new here..I'm having an issue with my 96 corvette lt4...I'm having a high idle problem roughly at 1500 rpm's...since I've installed a MSD optispark,this has happened...I've also replaced the hose from MSD going from intake to bottom of optispark...could this be an issue??driving me firkin crazy...I've replaced just about every sensor and still this rpm is high...Please if anyone has a solution or has had an issue and fixed it,please help me Thank You it's nice being in this family forum....

A.R. Shale Targa

iTrader: (2)

That line must have created a vac leak. Hence the high idle