injectors? How much Hp?
06-10-2009, 12:02 AM
#2
1.0 BAR
Join Date: Apr 2009
Location: Jersey
Posts: 214
You can't really rate injectors like that...
You didn't state what you are putting it in and your profile doesn't state what your running...
I'm guessing you are putting them in a 4cyl so in my experience (Mitsu 4G63), running low impedance 750cc injectors at 43 pounds of fuel pressure, I was able to make a little over 400 horsepower on pump gas. The injector duty cycle was a safe and reliable 76 - 78 % injector duty cycle. Please take heed in the fact that if you run injectors at 100% injector duty cycle for too long they will fail, maybe not entirely, but they do become erratic in operation causing you to melt a piston because one fell behind for a few milli-seconds
At all the shops I have been around, the tuners said to never push injectors past 85% injector duty cycle unless you don't care about the motor.
You didn't state what you are putting it in and your profile doesn't state what your running...
I'm guessing you are putting them in a 4cyl so in my experience (Mitsu 4G63), running low impedance 750cc injectors at 43 pounds of fuel pressure, I was able to make a little over 400 horsepower on pump gas. The injector duty cycle was a safe and reliable 76 - 78 % injector duty cycle. Please take heed in the fact that if you run injectors at 100% injector duty cycle for too long they will fail, maybe not entirely, but they do become erratic in operation causing you to melt a piston because one fell behind for a few milli-seconds
At all the shops I have been around, the tuners said to never push injectors past 85% injector duty cycle unless you don't care about the motor.
06-10-2009, 12:05 AM
#3
1.0 BAR
Join Date: Apr 2009
Location: Jersey
Posts: 214
Forgot to say that some guys will say 750's on a 4cyl are good for 450 wheel horsepower, but they may be referencing race gas which changes the estimations. Some folks run a little more fuel pressure which can help as well, but to much fuel pressure can have a negative effect on the injector as well when cranked too high.
06-11-2009, 11:58 AM
#5
0.5 BAR
Join Date: Apr 2009
Location: Oregon
Posts: 81
There is no reason to not go with bigger injectors, aside from the minimal cost. Figure out what the max your tuning system can handle without over running and get those. You may eventually want to switch to E85 or upgrade turbos, in which case you'll need new injectors.
For my 2.0 DSM I'll be going with 1600's. It's at the very edge of what is tuneable at idle, and I will never ever need more injectors. Well, maybe if I win the lotto, probably not even then
For my 2.0 DSM I'll be going with 1600's. It's at the very edge of what is tuneable at idle, and I will never ever need more injectors. Well, maybe if I win the lotto, probably not even then
06-11-2009, 04:09 PM
#6
1.0 BAR
Join Date: Apr 2009
Location: Jersey
Posts: 214
There is no reason to not go with bigger injectors, aside from the minimal cost. Figure out what the max your tuning system can handle without over running and get those. You may eventually want to switch to E85 or upgrade turbos, in which case you'll need new injectors.
For my 2.0 DSM I'll be going with 1600's. It's at the very edge of what is tuneable at idle, and I will never ever need more injectors. Well, maybe if I win the lotto, probably not even then
For my 2.0 DSM I'll be going with 1600's. It's at the very edge of what is tuneable at idle, and I will never ever need more injectors. Well, maybe if I win the lotto, probably not even then
I would say if the 750's are used, who cares, run them for a bit and see what happens.
If they are new, I wouldn't get them dirty and move onto a 1000 or a 1600 just like tkelly said.
Woot for E85!!!
Thread
Thread Starter
Forum
Replies
Last Post
5thgencivickid
Turbo Parts For Sale
26
04-11-2005 09:35 PM
2000vsm
Forced Induction
26
07-03-2003 12:08 AM
