She is running weary strong,only between hard gear shifts she starve a little,when we test drove the car me and the tuner hi ask me if the pump is steel stock,I ask why do I need to upgrade it,hi said you can but live it alone,he almost sounded like my fuel system is little weak ( border line).hotmustang331 said:If its tuned and the car isnt lean, then dont worry about doing anything. If you throw in 24#ers you will NEED a retune....only thing I would be worried about is how close you are to maxing the stock injectors, checking with your tuner would be the best bet. When their pulse width is maxed or close to it, the life of the injector is going to decrease.
305hp and 330tq motor only have 300 miles when dyno......hotmustang331 said:Around 320RWHP from what I hear....how much did you make?
Dude please explain this better for me:jstreet0204 said:First if you were only running lean between shifts, the fuel system is not the problem, the tune is. Your tuner should have increased the manifold volume in the eec. This acts like an accelerator pump, and fix the lean tip-in condition.
Second, you don't have a fuel pressure reulator if your car is a 99 or newer. It is all handled electorincally.
If you want to upgrade your fuel pump, then an svt focus, aviator, or ford GT pumps are all good option.
Warrior 102 said:Dude please explain this better for me:
This acts like an accelerator pump, and fix the lean tip-in condition.
What is accelerator pump?
So I guess the best idea is to go back to my tuner and talk to him about this.....jstreet0204 said:Acclerator pump is a carry over from the carb days. On a carb it is an actual little pump attached to the throttle linkage. When you pressed the gas it would squirt and extra bit of fuel into the throttle bores to make up for the sudden rush of air. On fuel injection it is handled electronically, and the manifold volume parameter is what lets the computer know how much extra fuel add when you hit the gas. This extra fuel compensates for the time between when you hit the gas, and the time that the computer catches up and starts adjusting fuel on its own.
Again, I say this if your car is ONLY running lean between shifts. It is still a good idea to get some datalogs done to confirm the duty cycle of the injectors to tell how close they are to being maxed out.
Warrior 102 said:So I guess the best idea is to go back to my tuner and talk to him about this.....
By the way thanks dude.
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