21lb injectors?

[UrbanRedneckKid]

Would it make any difference putting 21 lb injectors in my 4.0? The stock ones are 19 lb I think???

I pulled a knocking 4.6 from an 01 F-150 on friday at work, and it has the pink 21 lb injectors in it.

My intake is ported and I have a 2.5" exhaust, My O2s do read a little on the lean side above 3500rpm. And I do realize they won't do much without a re-tune, but under WOT the ECU just dumps fuel anyways, why not a little more?

They question is, Is putting slightly bigger (free) injectors in my truck worth my 20 minutes?

 

[Ranger#1]

good q

 

[AllanD]

Provided you don't melt something or have the engine ping lean is good.

Rich is "safe" but actually makes less power.


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[UrbanRedneckKid]

Provided you don't melt something or have the engine ping lean is good.

Rich is "safe" but actually makes less power.


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So what are you saying Allan? Would the power difference (+or-) even be that noticable?

 

[Sasquatch_Ryda]

He is saying it being a bit on the lean side is good as long as its not pinging.

I don't think you will see any improvement at all, it might actually be worse.

 

[UrbanRedneckKid]

K, sounds good to me.