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symonh2000 · 31-03-2008

All naturally aspirated engines are limited by the amount of air they can suck in. To increase power substantially you need to get more air in. With more air you can add more fuel so you get more power.
You can do this by gas flowing, adding high lift cams, or by bolting on a supercharger or turbo charger which are basically air pumps.

Unless a chip/remap can add more air (Which it does on a turbo car by raising the boost) it will have very limited effect. All it can do is optimise ignition, fuelling, and possibly rev limiter settings.

31-03-2008	#6 (Post Link)
symonh2000 AO Gold Member Join Date: Dec 2005 Location: Carterton, Oxfordshire Posts: 8,072 Member car: Fiat Coupe 20V Turbo	Re: A Sensible Look At Tuning All naturally aspirated engines are limited by the amount of air they can suck in. To increase power substantially you need to get more air in. With more air you can add more fuel so you get more power. You can do this by gas flowing, adding high lift cams, or by bolting on a supercharger or turbo charger which are basically air pumps. Unless a chip/remap can add more air (Which it does on a turbo car by raising the boost) it will have very limited effect. All it can do is optimise ignition, fuelling, and possibly rev limiter settings. Fiat Coupe 20VT, mildly tuned to 260bhp Never take laxatives and sleeping tablets at the same time.