Water Injection - THE FACTS!
05-03-2003, 10:45 PM
#51
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 1,495
Re:Water Injection - THE FACTS!
I'm going to be installing a WRX intercooler here soon... 10 psi should be fine to take advantage of this.
The real gains are seen though when your air temperatures are insanely hot (from high boost applications) so yes, the hotter you're running to the point of injection means more potential for the water injection to make a difference.
But really what you're doing is cooling down the intake air to some degree (you will want to put your nozzle further down the intake pipe then I did), and the methanol just allows a more pure burn in the engine. Of course running more boost means hotter conditions, so yes I can see where they're talking about that.
I'm running 10 psi daily, spiking to 11s... using the AFC hack... no detonation under full throttle (timing is still fully retarded).
However I have very minor pinging in lo-throttle/lo rpm ranges. This is why I feel an intercooler is necessary since my water doesn't spray till 5 psi, when I'm daily driving that air is getting to hot and the computer is advancing the timing to much for normal.
The real gains are seen though when your air temperatures are insanely hot (from high boost applications) so yes, the hotter you're running to the point of injection means more potential for the water injection to make a difference.
But really what you're doing is cooling down the intake air to some degree (you will want to put your nozzle further down the intake pipe then I did), and the methanol just allows a more pure burn in the engine. Of course running more boost means hotter conditions, so yes I can see where they're talking about that.
I'm running 10 psi daily, spiking to 11s... using the AFC hack... no detonation under full throttle (timing is still fully retarded).
However I have very minor pinging in lo-throttle/lo rpm ranges. This is why I feel an intercooler is necessary since my water doesn't spray till 5 psi, when I'm daily driving that air is getting to hot and the computer is advancing the timing to much for normal.
05-06-2003, 04:14 PM
#55
1.5 BAR
Thread Starter
Join Date: Dec 2002
Posts: 1,495
Re:Water Injection - THE FACTS!
I guess I don't see how its so messy, yeah there are wires floating around for now (until I can get those multiwire packs)...
ANd I really piety the poor sap who ever has to do any sort of work on this car electronics wise, none of the colors are coded right HAHAHAHAHAHAHAHAHA
ANd I really piety the poor sap who ever has to do any sort of work on this car electronics wise, none of the colors are coded right HAHAHAHAHAHAHAHAHA
05-06-2003, 09:32 PM
#56
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re:Water Injection - THE FACTS!
Originally Posted by 89dxhunchback
My alcoy/water injection kit uses a stock F-150 fuel pump and works fine. my friends GN ran it when he only had 500hp.
If its good enough for a 500hp 3.8L v6 its should at least support a 350-400hp 4 banger..
Prob. under $40 at a junkyard or something.
If its good enough for a 500hp 3.8L v6 its should at least support a 350-400hp 4 banger..
Prob. under $40 at a junkyard or something.
You should be able to get an F-150 fuel pump for less than $40, IMO, it's an unwanted 95 lph crap pump barely capable of fuelling a low revving truck 302. Only about a million F-150s in the yard, rotting away.
05-07-2003, 07:41 PM
#59
0.5 BAR
Join Date: Apr 2003
Posts: 188
Re:Water Injection - THE FACTS!
Originally Posted by donalson
what kind of flow do you realy need for water injection?... i've got a few spare EFI fuel pumps sitting around.. may have to test em for flow and such 
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