1995 t/a

[Black beauty]

Well everthing is getting power i just cant get a spark from my plugs will the opti keep it from sparking new icm .coil help please

[seppburgh]

Go over to the LT1 forum and start reading. There was one reciently with MDS where the coil was bad. Went back to OEM and it worked. Other things to check is the control modual, a none oem opti can also be the issue. Have not read good reviews from opti off the internet or from big-box stores. Good luck and post back when you got this tracked down!

[cammed goat]

You can also check out GMHightechPerformance. Some swear by the Opti. It's a difficult system to deal with when you're still learning about it, but once you get everything sorted out, it's cake.

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Did you replace anything OP?