Fuel pump upgrade...

[Neinris]

Originally Posted by 06YarisRS

Yeah, I'm really interested in why Toyota changed the system in 2009. You're not the only one getting dizzy. Haha. As mentioned in my PM to you, I'm hoping to speak with Delphi tomorrow to see if they can provide dimensional specs (diameter and length) on their various pump bodies. Do you think it makes sense to do this first - aka see if they have a pump that will physically fit, then worry about the connections? Maybe I should inquire about 2009- pumps first? Open to thoughts and suggestions.

I do apologize as I have been a bit focused on my engine management at the moment. I was speaking with FTG Tuning and they think they may be able to write to my stock ECU fueling maps, thus allowing me to eliminate the need for my piggyback. My tuner is also pursuing this avenue.

Adam, I need to apologize if I’m pestering you, I just got all excited with all the findings, and I want to make sure we’re putting out accurate information.
We all have our own issues that we need to deal with. I’m still dealing with my ghost fault codes, no CEL, bad evap canister pump, and pursuing an alternative rear disc conversion, but those are all on another thread.

Like I mentioned earlier in the thread, I’m after more of a drop in upgrade. I’m gearing towards readily serviceability, not to say a 255lph pump is not easily serviceable. I’m just not sure how it will work without of the fuel regulator. Is it all going to just depend on the injectors to control the amount of fuel? Maybe the ECU will control the A/F mixture on its own? I’m still learning how it all works.
If someone has strapped in a 255lph pump please share.