Well one day it rained and my 388 ci LT1 was sitting in about 5 in. of water at a light and then after it started to lag a little and backfire. Then after a day of sitting, the car sometimes starts but now is to the point where it starts and will idle fine but when I drive it it is fine for awhile if I keep the rpm's low. Before if i'd go over 2k it would just die instantly. Now when I drive it will do the same start to bog out then die on me and then I push start it while it's rolling and starts up but then it will die again when I get near 2k so I'm thinking I ruined the opti? Would that be correct? I'm gonna go with the Accel for $200.00 then I will prob go with a 255 gph in tank fuel pump and some 50# injectors before I hop on the dyno. Do you guys think it's the opti? It is also throwing a code, probably a misfire code huh? Thanks for the help.

 

Yep sounds like an opti to me

 

Why guess at the codes? Get it scanned (some shops do it for free) and see what the code is. A misfire will generally cause a flashing SES light if its serious enough.

 

After I first bought my Z I went thru a small puddle in the middle of a left turn and the car stalled and wouldn't start. I went back to it a couple hours later and it was fine. I know that there was some kind of recall on a vacuum part that they relocate to a better spot. Maybe this has something to do with it.

 

Well my opti is out and I am installing a new OPTI from Accel. I will also be installing fuel pump, fuel injectors, comp r lifters, and getting it dynotuned so it will run right. The sound on the motor was ping. I am also replacing the MAF and o2 sensor for the codes. Opti is good to me, just not too great with water. Thinking of doing something to it before I put it in to make sure water can't get in there at all.