Hey guys, I had a thought earlier. I definitely haven't looked very thoroughly through the forums but as far as easy power gains go many people don't seem to talk about putting oversized or after market injectors. Why is that? I assume that as long as the block can handle it and the fuel pump can put out extra pressure then the computer should be able to compensate with extra air.
Maybe the fuel pump is already putting out all it can and you'd need to put a bigger pump and that makes it not worth it for some reason. Maybe the block can't handle it. Maybe you wouldn't even need the extra pressure just injectors with larger holes.
Just curious if doing something like this is feasible. Thanks

 

Where will the computer get "extra air" from?

 

I feel stupid but I'm not sure. I assumed the computer adjusted mixture based on what the O2 sensor was telling it. Unless airflow is only regulated from the butterfly off the throttle cable?

 

Nothing wrong with not knowing as long as you are trying to learn more. You're correct, the computer does adjust mixture, but all by adjusting how much fuel is injected. The amount of air is controlled entirely by your right foot, the computer measures the air, and injects the appropriate amount of fuel to match it the airflow. The computer cannot adjust how much air goes into the engine in any way. Adding bigger injectors alone will do nothing, and unless the computer is programmed to use them, or is able to compensate for them, it may actually hurt performance.

Bigger injectors are only needed if you are adding more air. When you add more air, more fuel is required to keep the mixture correct. If you add a huge amount more air, that amount of air may require more fuel than the original injectors are able to provide. Different cams, intakes, exhausts, and head porting can have an effect on airflow, but it's fairly small. A turbo or supercharger can add significantly more air. Those two things would almost certainly require bigger injectors.

Sorry to be the bearer of bad news, but the 22RE is no powerhouse, and is very very expensive to make powerful. Keeping the engine maintained and properly tuned will be the best way to invest in performance. You can spend a lot of money at LCE Performance and gain almost nothing.

 

Damn. Well fair enough then. What about these Flamethrower Injectors I've seen. They're four port right? I assume the stock ones are just one port? Also, will they do me any good. I know you get a better fuel burn with a finer mist. I've seen good reviews for them. I should mention that I'm mostly stock. We bored the cylinders out once so idr the measurements but it's not too far over size. We also put a crawler cam in it.

 

keep in mind, with the 22re, the injectors are batch-fired. not sure there is much advantage (if any) to using 4-hole injectors vs the stock ones.

 

Again, sorry to ask a stupid question but what's batch fired mean?

 

It means that all 4 injectors squirt at the exact same time.

 

KIA four hole injectors will work just fine in a 22RE. Don't even have to to use a wiring adapter. My KIA set of four injectors have been going strong for 4.5 years now. It was cheaper for me to buy a new set of KIA injectors with the same flow rate as the Toyota injectors than to send the used Toyota injectors off for cleaning/rebuild.

Anyway, just use the factory Toyota injectors especially if they are in good condition. If there is any power gains with fancy named injectors, I don't think there would be a significant or very noticeable power gain improvement.

 

I added flamethrowers years ago and my truck hated them, it ran so rich it smelled like fuel, no gains besides dumping fuel…..good advice above, I ended up pulling them and sending my stockers to witchhunter for a rebuild…leave the system alone and do normal maintenance, that’s the best thing you can do with the 22RE