Not unless your setup needs more fuel.

And they are 290!

 

How do I know my set-up need more fuel or not?
:roll:

 

What is your setup?

It is unlikely any thing non forced inductio or stock cams NEEDS it. I am running my Prelude injectors as 92% capacity with an 88% duty cycle with my stock cams.

Trey

 

My one has DC 421 header, Apexi Cat back, AEM CAI, Denso plugs, and Vitek Cables.
That's it!

 

Then, no you don't need bigger injectors. The only time you really need larger injectors is if your playing with your cams, compression, timing, etc. For the most part though, unless you change your internals you wont need injectors.

It's just another, hey look what I got, if you don't need it, and for the most part, it may be a new toy that's a pain in the ass to get working correctly. As frequently different size injectors, especially if the fuel isn't used, can cause idle problems such as a oscilating idle, and really bad cold starts.

Later,
Aj