If you are looking for real world results here is an example. Myself and JDredd both have very similiar setups. (Stage 1x cams and 3.0 pulley with supporting mods) I had a hot-wire kit and he didnt. He ran into fueling problems and I was fine. He then installed the hotwire kit and now he no longer has fueling problems...
"Real world testing shows increase of 2-3 psi max fuel pressure. Stock injectors usually fall off in the 310-320WHP range, 42#'s around 340-360. This kit increases those numbers by about 10%. This of course depends on the year of your car and many other factors but that gives you an idea of what to expect. "
I used the Casper's kit. You may or may not need it. I used to battle inconsistant 02's at the track, and had a hell of a time dialing it in. After the upgrade, I noticed much better consistancy. Any GP should do ground wire upgrades and such anyway, I'd do as much to keep the electrical up to snuff first to see if you need it. Then go for the FP wire upgrade kits.
Ron what do you recomend in the way of grounding the GPs?
I have the caspers Fuel pump kit and I love it. i was getting tons of KR when i would flash the converter. Basicly making it go lean and added the kit and that all went away. i am very happy with the kit and its very easy to install.
I cleaned up the frame to ground connector on the body first. Then added a ground wire that attaches to that and to one of the heads, then another that attaches from that point to the other head. It was amazing to me how much my idle smoothed out at the time, and my headlights got brighter. Got the ground wires at the local Pep boys. I routed it between the idler pulleys, but a longer length can get to the front engine mount/coil holder, which also goes into the head.
I agree Steve i have seen many imports doing this. Dont know how gospel it is but they all seem to do it.
As for do you need it when you go higher in teh HP, i would say so. The one from Caspers bypasses the fuel pump resistor and added thicker gauge wire from the pump to the relay over the stock wire. Also if you go to a 2 pump setup, caspers has a wiring kit for that as well. i think the FP wiring kits ore more of those mods that are good insurance.
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