1. what's more accurate...??...the mechanical or electrical boost gauge..?? 2.which one would be a better buy...??...electrical oil temp or electrical oil pressure..?? 3. would it be wise to get fuel pressure too..??
1) Electrical is much better then mechanical. Go electrical if you can afford it. 2 and 3) If you're buying two gauges, I would go with boost and EGT. Three gauges, add oil pressure.
There was a little talk about this in a thread not too long ago. I bought my self an electrical Autometer Sport Comp boost gauge; has memory peak boost and warning light. It's a very nice gauge w/ these features. Come's w/ a 2bar? MAP sensor, nylon hose w/ fittings, red/green bulb condoms, some hardware, and wires. What I like are the memory and warning light. Also the MAP I can rig it up w/ my harness if I happen to go w/ a standalone later. It does this sweep thing, goes to full vaccum to calibrate auto setting, then goes back to zero. Sometimes it gets stuck because I start the car too soon. I just turn the car off, let my solenoid reset itself somewhere behind the dash, then I start back up again. I riged the power for the gauge to my MAIN relay, the bulb w/ my cluster so I can dim it.
definatly go with boost egt and oil presure for starters. u dont really need the fuel pressure gauge unless u add it to those three.
