advatages of fuel pump rewire

[StarDiamond]

I was just wondering what the advatages of rewiring the fuel pump besides the fact of 12vs all the time.

 

[BoostinAWD]

You can squeeze out a few extra psi of boost before you start running lean. Feed the pump with 14v and that threshold rises, and you get the idea

 

[Stanford]

Your voltage to the fuel pump actually drops in higher rpms. That is not a good thing, if I had a stock or aftermarket pump I would re-wire. It may be ok on the T-25 because it falls off at higher boost, but I would still rewire it. It is very inexpensive and if it ever saved you from leaning out it was cheap insurance.

 

[leet]

Originally posted by Stanford
Your voltage to the fuel pump actually drops in higher rpms. That is not a good thing, if I had a stock or aftermarket pump I would re-wire. It may be ok on the T-25 because it falls off at higher boost, but I would still rewire it. It is very inexpensive and if it ever saved you from leaning out it was cheap insurance.

Stanford, good bit of advice there.

Personally, the moment I put a 255 in, it will be re-wired.

 

[KPWSerpiente]

Besides all of the benefits listed above, it gives you a chance to wire a kill switch in for the pump. Hard to drive the car off with the fuel pump killed. And it becomes much easier to compression check the 2nd generation car which lacks an EFI fuse.

-T

 

[Stanford]

Originally posted by KPWSerpiente
Besides all of the benefits listed above, it gives you a chance to wire a kill switch in for the pump. Hard to drive the car off with the fuel pump killed. And it becomes much easier to compression check the 2nd generation car which lacks an EFI fuse.

-T

Thats another good benefit, on my old 97 Spyder I had a Keyed kill switch. So even if someone found it you needed a key.