Wondering when i should be planning on changing the injectors, also what kind should i use as replacements??

 

I replaced mine on the '97 at 200,000. Your situation may be different. If performance is lacking along with fuel mileage even though it's tuned, it might be time.

I bought Bosch injectors for price and function. They have three orifices to better atomize the fuel to the cylinders. I got them real cheap at www.fuelinjectorconnection.com. They perform real well. I'm quite satisfied.

 

These are not a routine maintenance item. You should never have to replace them if they are functioning properly. You can test them and clean them if you would like using various methods though. If you are thinking about "upgrading" your injectors like a few of us have done then you can do a search on injector upgrades. I have dodge neon injectors that have four holes instead of one and are supposed to atomize better.

 

changing the injectors should only happen for 2 reasons:
1. An injector is failing
2. You want to increase efficiency

Normal cleaning should happen though. It's mainly due to the ethanol that is in the majority of fuels now. Most places would recommend they be cleaned every 100k. If you're looking at upgrading your injectors, check the electrical connections on your current injectors. This is a very easy way to determine what type of injector you need (ev1 vs ev6). ev1 connections have a small ridge on the top and can be easily pulled off. ev6 injectors have a red slide-clip on the side that secures the connector to the injector. In late 98 XJ's switched to the ev6 so make sure which type you have. A popular ev1 style upgrade is the Bosch #703 injector. For ev6, you would want to look for Bosch #784 injector. These can be found in some 96-01 Neons (703's) with the 2.0 engine and 97-01 Stratus/Breeze (784's) with the 2.4 engine. Chrysler used multiple injector styles, so be sure that you are getting the right ones.