Erik Gross method revisited

[sergechronos]

In my above data, those resistors were only allowing 7.5 amps each through them with the pump slowed down to under half normal speed. It sounds like two resistors is still too much for dual pumps.

The Walbro has significantly less current draw under normal operation than a Denso, but I would theorize that it's much less tolerant to being slowed down. The Denso has 12 armature segments, while the Walbro has only 8. You get much less leeway for speed changes before you approach dead short status.

Not to renecro a mostly dead thread, (although mostly dead is still partially alive), but given that you said the Walbro has less current draw and is likely less tolerant to slow downs (in regards to dual Walbro), would this mean that the dual resistor idea may not work near as well for a single Walbro as it did for the Denso? Or should it still work fine?

I've been running a Walbro single but had yet to hotwire it as I was still running stock FPR, Injectors and Turbos. Now I'm going to be going to 560cc, 13ts and replacing the FPR (most likely with another factory FPR if this works), and would rather do dual resistors than hotwire and AFPR.

[RealMcCoy]

Not to renecro a mostly dead thread, (although mostly dead is still partially alive), but given that you said the Walbro has less current draw and is likely less tolerant to slow downs (in regards to dual Walbro), would this mean that the dual resistor idea may not work near as well for a single Walbro as it did for the Denso? Or should it still work fine?

I've been running a Walbro single but had yet to hotwire it as I was still running stock FPR, Injectors and Turbos. Now I'm going to be going to 560cc, 13ts and replacing the FPR (most likely with another factory FPR if this works), and would rather do dual resistors than hotwire and AFPR.

Several people have done this with a single walbro, with no issues that I've been made aware of... I just did it on a wally equipped car last month, and it seems to be working just fine.

[importrunner]

Would this only be done with a aftermarket pump? I'm strictly bpu and was going to hotwire my pump just wanted clarify.

Sent from a wannabe ipad

[RealMcCoy]

Would this only be done with a aftermarket pump? I'm strictly bpu and was going to hotwire my pump just wanted clarify.

Sent from a wannabe ipad

I've never seen a hotwired stock pump overrun the regulator, so I would consider it mostly unnecessary. If you did want to mimic the stock system, The factory resistor would be fine for the stock pump. It just can't flow enough current to run the bigger pumps.