Topic: BOSCH II UPGRADE FUEL INJECTOR SET 4-HOLE NOZZLE (4) 96-02 Jeep 2.5

[DOTSON53]

Is anyone using these? Would you recommend them? And what too expect. Thanks

[SamsonJR]

just yesterday I put in a set of yellow top 4 spray ford injectors into my 91, they are 19lb. the Tj's run a higher pressure compared to the yj's I think around 49 psi, I don't remember completely, the yj runs around 31. but same basic principal, a 4 spray injector is superior IMO to a single spray, better atomization of fuel. I noticed a slightly better idle and smoother acceleration. nothing to amazing but every little bit helps. This swap with a 4.0 TB brought back some life I felt like I lost after my lift. hope that helps

[sharpxmen]

TJs already have 4 nozzle injectors from what i know (or maybe the later models). You'll need something like 24lb/hr at 49 psi to get a bit of performance increase, if you're not after that then no reason to swap, there are a few threads with part numbers that work for TJ from guys that did this successfully, one that i recall needed pigtail adapters for the injector connectors so watch out for that as well.

[Jeffy]

You might want to read this thread.  It's done on a YJ but goes over them in general.

http://4bangerjp.com/forums/index.php/topic,3479.0.html

I'd recommend going with Design III's not II's.

[DOTSON53]

Thank, guys I have two injectors throwing codes.

[sharpxmen]

stock ones you mean?

[mrcabinet]

I don't remember the part number, but I have been running 24 lb. 4 hole Ford V6 injectors for a year now and am very pleased with them. A little smoother and a touch more power and gas mileage. If it's stock injectors you need, I have a set that can be had real cheap.

[DOTSON53]

Yeah stock ones were making check engine light come on. Bought some off ebay from a neon I think going to give them a try

[sharpxmen]

Yeah stock ones were making check engine light come on. Bought some off ebay from a neon I think going to give them a try

did you check the connectors on them? that causes a CEL for an injector most of the time, doesn't mean they can't be bad - i guess you'll find out if you swap them as it would come up again if the connector is the problem.