Homer Lusk Collyer
Join Date: Jun 2008
Location: LA face with the Oakland booty
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanked 5 Times in 5 Posts
iTrader Score: 0 reviews
Basically the same thing. The crystal controls the clock speed for the computer. If you increase the clock speed, you'll speed up everything that the ECU controls. If you increase the clock speed by 10%, you should get an 10% increase in your rev limit. It'll also change when TVIS activates, how long your injectors fire for, and probably some other stuff.
This is all second- or third-hand info from me. Toyotaspeed90 knows a lot more about these than I do.
I don't know what safe values for the crystal are. The person who modded Toyotaspeed90's ECU hasn't posted the specs (that I'm aware of) and charges/charged $100 for the service.
Look up overclocking old computers for basic details on crystals and clock speeds.
1989 Corolla SR5, 4A-F, 5spd, ~210k miles, 18.007s@83mph
WTB: 3sge camshafts ... PM me!