I replaced my Airtenx fuel pump with a bigger bosch in-line pump. Do I need to upgrade my in-tank pump ? Will the stock in-tank pump limit my new in-line bosch ?

 

where did you buy your bosch pump at I can't find any places that sells them.

 

We carry them but they are $$$.

 

You should only need to replace or remove the in-tank pump if you plan to exceed what the stock pump can flow with very little pressure restricting it - in the case of the GSR stock pump it should be able to flow around 400 hp worth of fuel at 35 psi. I'm not sure what the flow capacity of the bosch pump is at high pressure but the point is if the bosch pump by itself can flow enough fuel at your target pressure, the stock pump shouldn't be a restriction because it would effectively not be fighting any back pressure.

 

TurboInteg95 sells them really cheap.

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