Selecting The Right Injector

[FBRacing]

I'm in need of some advice. I've spent several days researching injectors, brands, flows, etc. and I'm not 100% positive on what works. I have a set of JECS red top side feed for my RB25DET S1 and two went bad. From what I have read is the JECS red tops flow at 225cc and ohm reading at 14.8. Can anyone else confirm this? Also, I have a hard time finding a straight answer on if it's ok to go larger in flow size even is your motor doesn't require it. Most forum discussions get way off topic and it seems like it's never truly answered. I plan to call a local shop to have the injectors cleaned and serviced at $18 each but I don't want to spend the money if I can throw in a larger size injector for larger power numbers down the road. I've found a local guy who would sell me a set of 600cc at 11.5 ohms for a couple hundred.Would this work or just flood out the motor? I would appreciate any advice or comments anyone may have.

[Ben C34]

Surely you don't want to put in bigger injectors without a tune?

If you do of course it will flood. The ecu doesn't know you have put in bigger injectors.

No tune means stock injectors. It's that simple.

[mad082]

As ben said, if you're running sock ecu then stick to stock injectors or it will run like arse and you'll just waste fuel. If you're still running the stock turbo then stick with the stock injectors as you don't need the bigger injectors.

Save putting in the bigger injectors until you plan on putting a bigger turbo on and then just do it all then.

[jiffo]

Might pay to check your info first.

Stock series 1 Rb25det will have 370cc injectors, around 13ohms impedance.

Rb20det is 270cc and they're also the same impedance. (but top feed)

[FBRacing]

The turbo is the hks Kai setup with the greddy eManage. Have a greddy intake, ku engineering tb, greddy fmic, and hks built head. This is what i know so far. Bought the car as is and still finding more aftermarket parts every time I look at it.

[FBRacing]

More pics

[FBRacing]

I don't know what the tune is. Haven't got that far yet

[NYTSKY]

When you get the injectors cleaned and tested I would highly recommend getting the car dynoed to check AFRs/tune.

[FBRacing]

Thank you everyone for your input. I took the injectors down to the local shop to be cleaned and flowed. Guy there said they looked like a custom flow set. Something about the ends not being originals. See what happens in the next few days.

[FBRacing]

When you get the injectors cleaned and tested I would highly recommend getting the car dynoed to check AFRs/tune.

I will definitely get the car tuned and dyno before anything else