fuel pump help

[pur97tsifwd]

k so i bought a 255hp walboro fuel pump b/c i am getting fuel cut if i get the fpr kit with stock injectors will i be safe to run??????

 

[vaboys2ndgen]

will need a afpr for sure with running a 255 pump.

 

[Locutus78]

With your set up you should be able to use the 190 and not have to get the afpr. You might be over extending your injectors. What boost are you at?

 

[tom04841]

Fuel cut has nothing to do with your pump. It is about how much airflow the computer sees. Once the limit of the mas is reached, the the ecu cuts fuel. Depending on the boost you are at, you may be maxing out your stock injectors, causing a lean condition. That would cause knock, and pull timing. But you still wouldn't fuel cut.

I would start by doing a boost leak test......i bet you have a good sized leak.

 

[pur97tsifwd]

i am getting 20 psi right now with my new 3inch exhast i tryed turning it down with my boost controler and it holds only in first gear at 15 psi

 

[pur97tsifwd]

what if i get vr-4 injectors will that help they are bigger right?

 

[zippyshoe]

what if i get vr-4 injectors will that help they are bigger right?

If you upgrade to injectors that flow higher than the factory injectors, then you will need some type of fuel control. If you go with a piggyback type controller (SAFC, etc.), then this would at least delay the onset of fuel cut. The piggyback controllers "lie" to the ecu by indicating a smaller airflow to the ecu than the actual airflow. Hence, you will be able to achieve a higher actual airflow before reaching fuel cut.