[nx468]

Originally Posted by Still_Good

I was actaully speaking to the tuning process, of tuning air/fuel mixture for maximum performance.
As you know a turbo induced much larger quantities of air, and a lean condition can cause pre ignition, or worse, detonation, which if passed across pistons not designed for forced induction will crack ringlands with ease.

Piston meltage is also a possibilty.

Anyone that knows carburetors will tell you fat is where its at with Nitrous and Forced Induction. But your right it is easy to lean a motor out on a carb , rather then fuel injection. You need to know your jet sizes , with any Holley designed carb they always have technical support on their carbs to help you with a Wet Flow sheet and proper jettings before you even start the motor(for the unexperienced). www.pro-system.com Now they already send you the carb ready for bolting on without worry about jet sizes and if the motor is too lean, they go over every detail before you even purchase or send your carb to them. They also send you Wet Flow sheets on the jettings so that if track conditions change or wanting to pick up extra tenths due to the air quality. Now the piston subject for a Forged Piston to melt it while running lean , this goes back to throwing money away. When you break in a motor 2 of the most important things to watch after the break in cycle is Pulling a Spark plug and checking the color to see if your running lean or not. And also that your timing is not too far advanced (normally you want a few degrees retard) . But like I said Fats where its at so a little darker color on your plug would be just right for FI or Nitrous.

But I know what your talking about Ive seen many people buy blowers and Nitrous and not know what they are doing and they melted down pistons on their first run at the track cause they was too lean and didnt know to pull a spark plug to check it or had too much advance which caused it to run leaner and same effect. Im with you on the Fuel Injection , but as far as money is , Im with the carbs. And always PSI forgot to add that in , PSI is very very important so your not all the sudden running out of fuel when the bowls are empty. Did you know you can lean a motor with Fuel Injection without proper PSI feeding it, seen that done as well.