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You can also convert it to a vented system. I've gotten a couple of the vacuum hose/valve sets for vented opti from the boneyard and have a new one on my 94 M6. I just modded the cap and isolator (middle plastic section between cap and aluminum body). And poke a hole in the intake elbow. Intake elbow end provides fresh air, vacuum from driver's side of the intake (T off of the EGR vacuum port). Plug the 3 weep holes on the bottom with a little RTV.
EGR was deleted by previous owner I believe. Am I out of luck?
No AIR system (air pump and the tubing is gone).
AIR delete is one of the ''free mods" you can do on a LT1, while still having a vented opti. Look it up on shbox. I just installed a T on one of my vacuum hose
On my 94 cars the one labeled "To Optispark" isn't there or just has a metal plug, can't remember which. You can use that one if you have the barbed fitting or put a T where the "To EGR Solenoid" goes. In your case, I bet this one is just capped. For those wanting to keep EGR this becomes a T. For those deleting or without, an elbow to the opti harness works, I prefer an elbow because it lowers the possibility of a kink that's possible if connected like in the photo.
09-23-2017, 12:46 PM
