klze problem!! engine wont start

[96mx3]

i have a 96 mx3 and just finished swaping my k8 for a what was supposed to be a klze but turned out to be a klde!! anyhow i tried just about everything but just wont start ...it revs up then stalls and if i give it gas it runs like **** and after a few seconds theres a return off exaust that comes out of the intake!! wierd!! compression is at 180lbs on eatch cylinder, y change the distributor rotor and now got a good fire!! I and also checked the injector and everything is fine gas is going to!!! it feels like a bad timing!
i found a part that seem to have come from the motor but just coudn't find were it goes! and not even shure it goes on thre motor! i have attached picture to this post if someone could give it a look and let me know if it goes on the motor and were it goes would be awsome
thx!!!!!!!