In Reply to: Do you really think you'll blow-it all up? posted by Eeek36 on February 10, 2000 at 18:06:26:
: Do any of you guys work around a PC? How about play any games?
If you mess up a setting on your PC, it might crash, you restart and it's OK. Maybe you mess up the drive and have to reformat. With the car, if you go too lean you can burn valves and you're out a $3000 head job. Or you overadvance timing, get one or two big detonations and blow a piston, and you're out another $3000. It's not very forgiving, especially if you're looking for that last HP on the dyno. BTW, without the dyno, you'll *never* know when to stop advancing or adding or subtracting fuel; your butt or G-tech isn't sensitive enough. That's even more dangerous.
: Looking over the torque/hp curves on the M3 and the writings from Turner and Dinan.. The M3 is optimized stock for 87-88-ish fuel.
: By the own admission of the tuners, they reoptimized the engine management for premium (90+ octane) fuel.
: Which oversimplified is bumping up the timing and playing with air/fuel curves through the power band.
: I suppose the crazier people might push the RPM band to 10k rpm and such.
: But I wouldn't.
: And can you guys really say the Factory teams just leave the ECU's to just ONE ECU SETTING and they don't tune them to the tracks or events they run?
: All I'm asking is....
: If the factory guys (and the import kids) can do it, why not us? Or maybe easier said....I.
The rev limit is set to the mechanical limit of the engine. Conforti's limit is as far as you'd want to go, until you are replacing cams/valves/springs/pistons/bearings/wrist pins/connecting rods. You're not, right? If you want to play with that you better have buckets of cash and an engine shop at your disposal.
It's not like there's a whole lot of power to be found by ECU tuning, even with Miatas and Hondas where you can get reprogramming tools. The adjustability is only worth it if you're doing extreme mods, and changing them frequently. I think it's a blessing to have quality tuners who can program the computer to your needs, so you DON'T have to buy the reprogramming equipment.