Maybe I'm not reading this right, if so, hopefully someone can enlighten me.....
I think it's pretty much PROVEN that our factory fuel pumps are good for at the very least, 450rwhp safely .....probably a good bit more at the limits, infact a few individuals that I know of are pushing almost 600rwhp at BPU + NOS on the STOCK pump...a little insane IMO, but just stating facts. In any case, let's take 450rwhp as a "safe" figure.
My question, why is it necessary to go with dual Walbro fuel pumps? looking at the fuel pump tests on www.mkiv.com....
http://www.mkiv.com/techarticles/fuel_pumps_test/pump_test.jpg
I think we can narrow this discussion to the 60-70psi fuel pressure range (40 psi fuel pressure + 20-30 psi would be the range I would expect to see 450rwhp out of the stock twins).
Our stock pumps flow....
[email protected] FP or 15psi boost
[email protected] FP or 20psi boost
[email protected] FP or 25psi boost
[email protected] FP or 30psi boost
The higher flow Walbro flows...
[email protected] FP or 15psi boost (almost 50% better)
[email protected] FP or 20psi boost (50% increase)
[email protected] FP or 25psi boost (DOUBLE the OEM pump)
[email protected] FP or 30psi boost (oh crap!... that's 2.5x the flow of the OEM pump)
[email protected] FP or 40psi boost
This would indicate that a single Walbro pump is good for at least 700rwhp before even approaching it limits.
Any thoughts?
-Mike
I think it's pretty much PROVEN that our factory fuel pumps are good for at the very least, 450rwhp safely .....probably a good bit more at the limits, infact a few individuals that I know of are pushing almost 600rwhp at BPU + NOS on the STOCK pump...a little insane IMO, but just stating facts. In any case, let's take 450rwhp as a "safe" figure.
My question, why is it necessary to go with dual Walbro fuel pumps? looking at the fuel pump tests on www.mkiv.com....
http://www.mkiv.com/techarticles/fuel_pumps_test/pump_test.jpg
I think we can narrow this discussion to the 60-70psi fuel pressure range (40 psi fuel pressure + 20-30 psi would be the range I would expect to see 450rwhp out of the stock twins).
Our stock pumps flow....
[email protected] FP or 15psi boost
[email protected] FP or 20psi boost
[email protected] FP or 25psi boost
[email protected] FP or 30psi boost
The higher flow Walbro flows...
[email protected] FP or 15psi boost (almost 50% better)
[email protected] FP or 20psi boost (50% increase)
[email protected] FP or 25psi boost (DOUBLE the OEM pump)
[email protected] FP or 30psi boost (oh crap!... that's 2.5x the flow of the OEM pump)
[email protected] FP or 40psi boost
This would indicate that a single Walbro pump is good for at least 700rwhp before even approaching it limits.
Any thoughts?
-Mike