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Jeep Wrangler YJ
YJ General Discussion
Best Fuel Injectors?
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<blockquote data-quote="machoheadgames" data-source="post: 433221" data-attributes="member: 18789"><p>Yes. Injectors are powered by ASD relay (controlled by PCM) 100% of the time the engine runs. The PCM individually controls the injectors by grounding them when it sees fit. So if it sees a rich condition coming from the O2 sensor then it will shut them off faster. The important thing is that the injectors can supply more fuel than the engine needs since they can be shut off early if needed. They can’t be pushed to get more fuel out of them than they’re rated for hence why ya don’t wanna go too low. But I don’t think 0.3 lb/hr would make any real world difference as I doubt the stockers are that close to the threshold.</p><p></p><p>But, so far I haven’t found any 4 holes that put out more than stock. The problem is our low operating PSI. Most injectors are rated for 49ish psi, by the time you scale their rating down to 39 psi they don’t suit the 21 lb/hr rating we need. So far the TJ ones will work for that but they aren’t 4 hole if anyone is specifically looking for 4 hole.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 433221, member: 18789"] Yes. Injectors are powered by ASD relay (controlled by PCM) 100% of the time the engine runs. The PCM individually controls the injectors by grounding them when it sees fit. So if it sees a rich condition coming from the O2 sensor then it will shut them off faster. The important thing is that the injectors can supply more fuel than the engine needs since they can be shut off early if needed. They can’t be pushed to get more fuel out of them than they’re rated for hence why ya don’t wanna go too low. But I don’t think 0.3 lb/hr would make any real world difference as I doubt the stockers are that close to the threshold. But, so far I haven’t found any 4 holes that put out more than stock. The problem is our low operating PSI. Most injectors are rated for 49ish psi, by the time you scale their rating down to 39 psi they don’t suit the 21 lb/hr rating we need. So far the TJ ones will work for that but they aren’t 4 hole if anyone is specifically looking for 4 hole. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Best Fuel Injectors?
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