Fuel pump upgrade...

[06YarisRS]

Just did some more checking at rockauto. Both the 2007 and 2009 use the same whole assembly (ULTRA-POWER SP9031M). So, that's a bit confusing.

On another note, here is something interesting:

Using the Delphi link I provided above, I looked at pumps for the Corolla (a 2011). Interestingly, it lists 2 engines (1.8L and 2.4L). Both use the same pump (FGO938). So, it would seem that the pump is robust - certainly for the 1.8 application. Now, if one compares the specs of the Yaris and Corolla pumps, they're not terribly far off in specs. The 2009+ Yaris pump does seem to be more powerful that the 2009- pumps. But, the 2009- pumps state 29 GPH, whereas the 2009+ is 26 GPH. Maybe our stock pumps are strong enough for a turbo application. I am concerned a bit though, as CTScott mentioned 10 psi boost as about the max for the stock pump, and he was referring to the 2009+ pump, I assume. My tuner said my fueling was perfectly fine, but I'd rather not run my pump at the ragged edge. The above said, if all this pans out - aka the RAV4 pump will indeed fit in a 2009+ housing, that might be my best approach.

It's too bad that CaliYaris's post in the CTScott thread didn't still have the pics. He says that he installed a Walbro 255 with "minor modifications". Then Kou recommends the "190lph for the MR2 or corolla 255lph", stating that they should fit. All so confusing. lol

I wish I knew more about the pump specs. The GPH figure is probably free-flowing and, as such, may not be a valuable spec at all.

Anyway, Corolla pump spec:



And 2009- Yaris pump: