Pls. explain the benefits of SD tuning to a newbie!
Thread Starter
Teching In
Joined: Aug 2004
Posts: 48
Likes: 0
From: SFV, So Cal
Pls. explain the benefits of SD tuning to a newbie! I've been debating the idea of having a tuner tune my car in speed density, I'm a newbie in the Corvette scene and the term "speed density tuning" is new to me.
I currently have a 05 C6 Z51 with a ProCharger D1SC, Kooks LT headers, methanol injection, FAST intake, Borla Stinger exhaust and a ECS retrictor plate on the inlet of the blower head since I'm on stock bottom end. The numbers are 625rwhp/560rwtq @ 6.5-7psi.
My question to you all is; what would the benefits be on my particular setup to tune in SD??
Any info is greatly appreciated...Thanks!
I currently have a 05 C6 Z51 with a ProCharger D1SC, Kooks LT headers, methanol injection, FAST intake, Borla Stinger exhaust and a ECS retrictor plate on the inlet of the blower head since I'm on stock bottom end. The numbers are 625rwhp/560rwtq @ 6.5-7psi.
My question to you all is; what would the benefits be on my particular setup to tune in SD??
Any info is greatly appreciated...Thanks!
On The Tree
Joined: Aug 2005
Posts: 152
Likes: 0
From: St. Petersburg, Florida
Speed density does away with the MAF. The downside to a MAF system is pegging it, whereby you flow more air through it than it can read. Once this happens... the PCM no longer knows how much fuel to add. So if you peg your MAF at 7 PSI.. the pcm doesnt know if your running 15 PSI or 8 PSI.. so the fueling has to be compromised.
The advantage to the MAF.. is drivability. The disadvantage is losing reading past X amount of airflow. Typically cars on turbo's would benefit greatly from SD, since boost can creep higher.. be set lower.. etc.. vs a blower whereby boost is a function of pulley size/RPM.
My suggestion, do what your engine tuner is comfortable tuning, and advises. Going against him/her points the finger back at you if something doesnt go rite.
Hope this helps.
The advantage to the MAF.. is drivability. The disadvantage is losing reading past X amount of airflow. Typically cars on turbo's would benefit greatly from SD, since boost can creep higher.. be set lower.. etc.. vs a blower whereby boost is a function of pulley size/RPM.
My suggestion, do what your engine tuner is comfortable tuning, and advises. Going against him/her points the finger back at you if something doesnt go rite.
Hope this helps.
