I have my franken motor with EJ25 block, EJ22 Heads and EJ18 intake manifold.

 

I am wondering if putting 2.5 injectors will make a noticeable difference or not?

 

Also is there any other stock throttle body I could bolt on that would flow better and make more power? Like maybe an outback or something? Any info is appreciated.

Consult GD on this, he just helped his neighbor build one a while back for a brat.

Are your current injectors gray or red? If they're red, then there's no point because they flow the same.

 

The big Frankenmotor thread on NABISCO doesn't mention any injector upgrades that I recall. I'd imagine you'd have to swap ECUs or run an S-AFC, which sort of ruins the point of the Frankenmotor.

 

Jacob

Are your current injectors gray or red? If they're red, then there's no point because they flow the same.

 

The big Frankenmotor thread on NABISCO doesn't mention any injector upgrades that I recall. I'd imagine you'd have to swap ECUs or run an S-AFC, which sort of ruins the point of the Frankenmotor.

 

Jacob

My injectors are grey. So I should swap to the red ones then huh? Sweet. Do i need to use a different computer? BTW we got over a foot of snow last night. Plowing and rallying all the way to work was so fun

Edited December 3, 201015 yr by A DOG

My injectors are grey. So I should swap to the red ones then huh? Sweet. Do i need to use a different computer? BTW we got over a foot of snow last night. Plowing and rallying all the way to work was so fun

 

Lots of people on here know more about this than I do, but it's my understanding that gray and red ones are close and are not a bottleneck at our power levels. I'd recommend searching, because the answer is out there.

 

As I said, you'd probably need a different ECU or tuning of some kind with upgraded injectors. I've never seen a documented case of a Frankenmotor running better with different injectors, at least not at my build level.

 

Jacob

 

P.S. Standard renob123 disclaimer applies here: I'm not an expert, but I read a lot and have done some stuff. Don't replace actual thinking with anything I say, and be sure to check with experts on stuff you aren't sure about.