98 challenger 1800 keeps dying after running

[Flightfollowing]

FML he send me the wrong part, sent me 278000955 instead of 278000646. The three prongs are male ends and need to be female, I can strip and solder them together but that defeats the purpose of buying a new oem plug and play harness. blahh.. I'm going to get this returned and buy i new one today from seadoosource. Hopefully it gets here by tuesday.

 

[Flightfollowing]

Got it installed and took the boat out for a spin. I had no problems at all. But now the engine that I just installed is sputtering and lagging. it doesn't want to go over 5k RPM and sputters to get there but when it does it roars. Any input on this? Only a few days left of boating season and I really want to have a nice time with the boat before I put it away for the summer.

Even though the plugs are new, I'm going to replace the plugs and see if it helps. I'm running premixed with oil injection for the break in period (lots of smoke)