Originally posted by guyn
Hi guys, I have a stock '84 GN, and need some speed, on a tight budget, where do I start? Just got beat by 2000 Grand Prix tonight and it pissed me off!
Any help would be appreciated.
Thanks, Guy
SOUNDS like your car may be low on boost, DO You have the Digital dash with the IDIOT yellow and orange two stage boost lights?
GET A MECHANICAL boost/vac gauge from JEGS of SUMMIT with a way to mount it INSIDE the car. YOU most will not find one LOCALLY, if you do , it will cost too much.
YOU NEED TO KNOW WHAT IS GOING ON WITH THE BOOST PRESSURE, get it up to 15 psi with good gas( sunoco 94)
PUT in a new set of spark plugs, IRIDIUM plugs From NGK are only 6 buck each UR5ix (7177) from summit
GET a adjustable fuel pressure regulator from ANY one of the TURBO regal vendors for just over a hundred bucks, and also get a RAIL mount FUEL pressure GAUGE with it.
USE a # 10 gauge HOT wire from battery or alternator to a NEW 12dc(coil) spst(single pole, signle throw) relay near the fuel pump connector, the BROWN/white wire is the fuel pump wire, CUT IT JUST BEFORE THE multi-pin cable CONNECTOR. Wire relay coil between chassis ground and the non-tank side (feed from engine conmpartment) brown white you cut,
THE tank side brown white goes to one of the relay contacts, the HOT wire goes to the other relay contact.
I intalled a 6amp BACK-up diode with the cathode towards the pump inline where the original wire was cut, Although not neccessory, it provides fail safe operation should the new RELAY crap out.
REGARDS