decapped injectors

DrB

Active Member
Has anyone decapped any of the factory injectors ie 4g92,93,94,4g15...etc?

if so how much do they flow?
 

donki

Administrator
Forum Administrator
I dont think too many have changed injectors, partly due to usually needing the ECU tuned to deal with it. Project/hobby car?

I think Tron, Matt Dean and a couple others have decapped the Subaru 560~cc's, and theyre been rated to around 870cc~ afterwards, so thats about a 50% increase. I'd hazard a guess the 175cc would go to around 260cc, and FTO/Magna 275cc could go to 415cc.
 

DrB

Active Member
now i guess i need to test it ;)
20180808_184947.jpg

maybe if i pull one of my 1600cc injectors and put this in and then add like 300% correction to that injector it might give me a ball park answer.
 

donki

Administrator
Forum Administrator
I think a 175cc injector decapped and spraying roughly at 260cc but fed by like 80psi of fuel pressure is going to atomise the fuel regardless lol
 

donki

Administrator
Forum Administrator
Seriously do they still work and are they Evan from injector to injector?
I dunno man, I mean they probably have their own names and personalities
Smartass rigby haha

There is one or two really big brand companys that sell aftermarket injectors in the 1000cc+ range, these injectors have been proven to be Bosch and Denso injectors but decapped to let them flow much higher than they did from the original manufacturer.
 
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