bay area tuners ???? help me to understand why ???
06-26-2015, 01:18 AM
#18
Yeah, You've Probably Never Heard Of Me.
iTrader: (21)
Join Date: Sep 2003
Location: in a glass case of emotion.
Posts: 17,962
Car Info: 345/30/19s
sounds like you dont know how duty cycles with injectors work if you simply think a 1000cc injector will work the same way as a 850cc injector.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
Last edited by Krinkov; 06-26-2015 at 01:57 AM.
06-26-2015, 07:37 AM
#19
sounds like you dont know how duty cycles with injectors work if you simply think a 1000cc injector will work the same way as a 850cc injector.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
06-26-2015, 09:16 AM
#20
Registered User
iTrader: (7)
Join Date: Mar 2011
Location: The Bay Area
Posts: 2,572
Car Info: 2006 STI
sounds like you dont know how duty cycles with injectors work if you simply think a 1000cc injector will work the same way as a 850cc injector.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
I dont have the time to try to really explain it all so I'll dumb it down a bit
you have to think of the injector as the nozzle on a garden hose, you want it big enough to provide enough water (fuel) for your plants but also small enough to get a good spray on the plants. the smaller the injector the better spray, that's why manufactures typically run the smallest injectors they can get away with and run high duty cycles to maximize the spray/atomization. it you're running too big of an injector you're not getting good spray/atomization for the amount of air you are flowing, especially if you're running a stock turbo. Its just like the old days of running too big of a carburetor on a V8.
My Best friend made the classic mistake of going to large on the jets in his carb, setup, once he dropped down a few sizes car runs stronger and is noticeably faster.
06-29-2015, 08:44 AM
#21
Registered User
iTrader: (5)
Join Date: Jul 2004
Location: San Jose, CA
Posts: 4,300
Car Info: http://kiva.org/invitedby/brett4254
Jet sizes on a carb are for setting A/F Mixture. They have nothing to do with overall flow support. That's determined by the carburetor body. A Holley 750 is a Holley 750 regardless of jet sizes.
06-29-2015, 03:45 PM
#22
Registered User
Join Date: Jul 2013
Location: Hayward
Posts: 325
Car Info: 1996 Impreza L
My recommendations are purely based on what I have seen of just about all side feed injectors for the Subaru's when going above 850cc the idle and low fueling type requested drivability seems to go to complete crap. I always recommend ID for injectors (large or small for that matter) although understand converting the rails and such can be a cash burden that folks don't really want!
06-30-2015, 05:47 AM
#23
Registered User
Join Date: Feb 2005
Location: San Jose, CA
Posts: 507
Car Info: 2000 2.5 RS (really slow)
My recommendations are purely based on what I have seen of just about all side feed injectors for the Subaru's when going above 850cc the idle and low fueling type requested drivability seems to go to complete crap. I always recommend ID for injectors (large or small for that matter) although understand converting the rails and such can be a cash burden that folks don't really want!
07-01-2015, 04:49 PM
#26
Registered User
Join Date: Jul 2013
Location: Hayward
Posts: 325
Car Info: 1996 Impreza L
07-02-2015, 01:59 PM
#30
Registered User
Join Date: Jul 2013
Location: Hayward
Posts: 325
Car Info: 1996 Impreza L
