Fuel pump re-wire question

[ditchmagnet]

just wondering....if the pump is just upgraded...does it still need a re-wire? thats all...thanks
-the ditchmagnet-

 

[92awddsm]

My 255 did fine without it but I ended up rewiring just for the peace of mind. I drove on it for 3 months stock wiring.

 

[midnght]

I have been running my 255 Low Pressure unit for almost a year with no problems. I think the re-wire is mostly for the 190 guys. It won't hurt anything to do it anyway.

 

[ditchmagnet]

so why does the 190 need it?

 

[temfate]

It depends on the level of performance you desire. If you are content with 300 horse, then with a 190 or 255 it's really not needed. If you want to stay with the stock pump it's a good idea...

It comes down to the voltage drop. Anyone working in the electrical industry can tell you 14-16 gauge wire (the stock one) is not big enough for a load as high as the fuel pump. This is shown in the voltage drop from the battery to the pump. Seriously, let the car idle and go measure it with a volt meter, granted you might need someone to play with the throttle to get an accurate measurement but the voltage drop about 2 volts. The higher the voltage the faster the motor in the pump spins and the more efficent it is... It's that simple.

 

[midnght]

It comes down to the voltage drop. Anyone working in the electrical industry can tell you 14-16 gauge wire (the stock one) is not big enough for a load as high as the fuel pump. This is shown in the voltage drop from the battery to the pump. Seriously, let the car idle and go measure it with a volt meter, granted you might need someone to play with the throttle to get an accurate measurement but the voltage drop about 2 volts. The higher the voltage the faster the motor in the pump spins and the more efficent it is... It's that simple.

And to further elaborate....

If you apply that to a 190 it will slow down to a point that it wouldn't push enough for a lerger turbo. The 255 even with a 2volt loss will pump enough fuel that the rewire is not needed.

 

[boostedinaz]

It may not be needed but do it anyway. It will only cost a few bucks and take a couple minutes. Nice piece of mind that you pump will always have a good power supply.

Michael

 

[doodie]

It may not be needed but do it anyway. It will only cost a few bucks and take a couple minutes. Nice piece of mind that you pump will always have a good power supply.

Michael

I dunno captin, but I spent $25 piecing my kit together at radio shack and I've done it more than twice and it took more than a few minutes. But the point is that, its worth the piece of mind. Do it and you won't have to worry about anything.

 

[temfate]

I've already explained the functionality of it in this thread. As for reasoning on doing it? I look at it this way:

If you're willing to spend a couple hundred intake, couple hundred exhaust, couple hundred everything else... Why not $30 for a DIY REAL IMPROVMENT THAT IS MEASUREABLE!

 

[dsm4life]

is it worth it ? yes . Makes it more reliable the stock wiring is poo poo