.... The pump draws a lot more amps than the wiring should be handling. As a result I am getting a heavier duty harness. Word to the wise: think about all aspects of your upgrades. I got lucky and didn't go boom.
John, I think your subject line would fit better as "Inadequate Fuel Pump" wiring as that is what I have been seeing as our cars get older and have increased fuel demands as HP increases for the now "normal" street car!
We have seen increasing engine damage resulting from lean conditions. With the power level needed for low 11's and into the 10's, the factory fuel delivery system is no longer marginal, but becomes inadequate, especially the wiring. A hot wire kit may help, but that is not the final answer.
Yes, it does bring 12 volts or so to the fuel pump connector, but there is still 3 feet of wire and a crappy 25+ year old connector before it can reach the pump. The Racetronics pump hanger has helped this with better wire and a REAL connector.
One issue the hot wire kit does NOT address is the ground wire. A DC circuit must have the same return path [wire size] as the supply. Also, grounding the pump through the chassis is not good as the frame is a very poor conductor with much resistance. We solve this by running a 10 ga. ground wire from the pump directly back to the battery.
When building a 9 sec. and faster GN, we budget at least $2000 for the fuel system, and almost 1/2 of that for a reliable 10 sec. build.
And for the guys that say just add an akly kit and you are good to run 10's or whatever, you MUST have a VERY good fuel delivery system as well, or you will end up with damage.
