BBBBadSS

iTrader: (16)

I read a post where everyone was saying Granatelli maf sensors are junk and to go to a SD tune. What is involed in doing this? What do i need for this, i need to retune anyway.

horist

check out the stickies, there's a link on the procedure

Basically it involves disabling the MAF which causes the car to go into a failover mode (which happens to be Speed Density) ... then the VE table is tuned to represent accurate airflow under various loads and RPMs.

Once the VE table is gold, you can hook the MAF back up and change the MAF talbes so they accurately reflect the incoming air

BBBBadSS

iTrader: (16)

Did not notice the sticky, I guess i should read before i post. Do you gain hp with SD tune or is it just for a better tune? Thanks.

horist

well.. a well done SD will theoretically make more power since you can get rid of the MAF which is a restriction

However I haven't seen any side by side comparisons personally...

I like running SD because my car seems to run better with it... throttle transitions are perfect, good idle, and it eliminates the MAF as a possible error in data for the PCM

BBBBadSS

iTrader: (16)

Can you do a SD tune on a 98 f-body?

WicketMike

iTrader: (13)

yes you can

horist

^^^ correct

and .. wickketmike gains brownie points cause of his avatar

DA BEARS!

BBBBadSS

iTrader: (16)

Thanks for the info guys.

TAQuickness

iTrader: (28)

check out the link in my sig. should give you a pretty good idea of what's involved tuning wise.