Speed Density Tune Vs MAF Tune
TECH Fanatic
Joined: Aug 2005
Posts: 1,691
Likes: 1
From: Sunny London, UK
What is the IAT sensor for?
Why is there millions of Hemi's running speed density!?
You really didn't use a slow *** hemi as an example of performance tuning and power did you? Ford uses the opposite and runs MAF only, GM engines seem to always perform better and they run the hybrid version of the two.
MAF vs SD will always be like this, just like Ford vs Chevy. If a tuner dials in the entire VE table and the entire MAF table, works on the transitional fueling and idle and driveablilty aspects, that is a good tune. Most of the shops do not spend that much time to get everything perfect or it would cost so much you wouldn't want it done.
If a tuner dials in the entire VE table and the entire MAF table, works on the transitional fueling and idle and driveablilty aspects, that is a good tune. Most of the shops do not spend that much time to get everything perfect or it would cost so much you wouldn't want it done.
Both work. Each does something different, but they both are effective ways of fueling. In the end, that's what matters. I try to run both, except in cars that don't like one or the other. Or in situations that dictate one or the other. I PREFER speed density.
But you are an exception more than the rule when it comes to a lot of tuners. They will just take short cuts to get the car out the door, put out a nice WOT run on the dyno so the customer is all happy and that's about it.
SD is great for certain cars but for the other 90% on here the combination is better for year round usage.
SD is great for certain cars but for the other 90% on here the combination is better for year round usage.
TECH Regular
Joined: May 2008
Posts: 460
Likes: 0
From: St.Louis Missouri
That is by far the truest ******* statement i've ever herd man so many tuners do it like that to make a quick buck... My car still isn't running right an i am not really happy with it an i am speed density. It runs different so many places it's never consistant so maybe my 02 leads could be crossed to???
