Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
larger injectors question
Posted 03 October 2003 - 04:33 PM
Posted 03 October 2003 - 06:33 PM
i dont know specifically, but i read something about it a time ago
Posted 03 October 2003 - 06:57 PM
Then, if you see a lean condition at the boost you are running, think about larger poundage injectors.
I run 14 -15 psi daily and have never seen a remotely lean condition when on boost. Always very rich (on twin meters I have currently connected for calibration purposes).
Subarus are way over engineered in many aspects of performance.
Most notably the fuel delivery system.
Just one man's real life experience.
Posted 03 October 2003 - 07:22 PM
Posted 03 October 2003 - 07:40 PM
"You can increase pulse time by turning up the fuel pressure. This will richen up the mixture."
Don't you mean increase the flow rate?
The ECU will "tick tock" faster I believe with a higher fuel pressure or larger injectors. This is only when it is not thinikng the engine is on boost.
(hot wire MAF info)
My observations have been that the ECU does NOT know the engine is at a positive intake manifold pressure. (The pressure switch only lights the dash light, I've had it unpluged). It goes into it's full rich map, ignoring the 02 sensor, when certain parameters are met. Engine temp, RPM, TPS reading and vehicle speed are involved.
Please tell me if you know different from my empirical observations
Posted 03 October 2003 - 09:00 PM
skip, thanks for the push toward an a/f meter first.. i would intend that actually but since i had the fuel injector Q in mind now my brain spit it out. a lot of the ausubaru guys upsize their injectors but many of them put on bigger turbos as common practice too
Posted 04 October 2003 - 02:24 AM
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users