The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - '65 SWB

w00dst0ck · 03-26-2018, 02:31 PM

Speed Density. It's not as responsive as MAF, and when you get into bigger cams it's harder to tune (because they don't build as much vacuum). But all my turbo LS stuff has been speed density, and the average person wouldn't be able to tell the difference. Basically it's just more time consuming tuning them. They're also more responsive to temperature change, as you need to tune based on the temperature at the motor, as opposed to a MAF which can be pretty much anywhere.

03-26-2018, 02:31 PM	#11
w00dst0ck Registered User Join Date: Jul 2013 Location: Austin, Texas Posts: 349	Re: '65 SWB - The never ending project Speed Density. It's not as responsive as MAF, and when you get into bigger cams it's harder to tune (because they don't build as much vacuum). But all my turbo LS stuff has been speed density, and the average person wouldn't be able to tell the difference. Basically it's just more time consuming tuning them. They're also more responsive to temperature change, as you need to tune based on the temperature at the motor, as opposed to a MAF which can be pretty much anywhere.