So My Evo IX has started having some issues. She has had some bogging issues when randomly accelerating and now the car will just die out at a stop light and not start for a few minutes. On a trip to GA this weekend, it would bog pretty hard as if it was going to stall, but then once back home at a corner store it died out again. I have replaced the Fuel injectors to 1300CC and a new fuel pump within the past year inorder to switch to e85. The car as thrown no CEL. Ideas on where to start here ?

 

Have you checked to see if it has a boost leak? All couplings connected properly, etc?

 

Are you on speed density or are you still using a MAF sensor?

 

Might be a cam position sensor starting to go. I would check the resistance on the cam position sensor and TPS sensor to see if they check out. Just mentioning a few things to check if its not anything else obvious.

 

I am on speed density and duel tuned 93 & e85. It has been something that has gotten progressively worse. It started with minor hiccups and progressed into what I stated above. How would I check the CAS and the TPS? I did recently swap out the stock recycler for a greddy BOV. But it was doing the small hiccups prior to that.

 

Sorry, didn't read carefully. I don't currently have a volt meter but if I can make it to the local tuner shop, they said they would poke at it with me. But they are far so kinda sketchy to get it there.

 

Are you using an Omni 4 bar MAP sensor? Those are notorious for going bad and causing the exact symptoms you described.

 

Like Klaiceps said. Happened to me also. Map sensor went bad. Started by cutting out on acceleration.