Page 1 of 3 123 LastLast
Results 1 to 20 of 60

Speed Density or Regular MAF Tune?

This is a discussion on Speed Density or Regular MAF Tune? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Torquer V.2 Cam (112 LSA) CNC Ported 5.3L Heads Milled to 60cc FAST 90mm Intake/TB and various supporting mods What ...

  1. #1
    Sold: LS1 '85 El Camino ls1camino's Avatar
    Join Date
    Dec 2005
    Location
    Laurel, Maryland
    Posts
    4,977

    2000 Grand Prix GTP
    2000 Trans Am WS6 M6

    Speed Density or Regular MAF Tune?

    Torquer V.2 Cam (112 LSA)
    CNC Ported 5.3L Heads Milled to 60cc
    FAST 90mm Intake/TB
    and various supporting mods

    What do you guys think?

  2. #2
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    I would probably do speed density just because it would be easier........ I'm lazy that way. It would probably run fine through the maf though. Curious to see what Frost has to say.

  3. #3
    Junior Member
    Join Date
    Jan 2009
    Location
    AUSTRALIA , PERTH
    Age
    52
    Posts
    10

    RED
    2008

    Quote Originally Posted by ls1camino View Post
    Torquer V.2 Cam (112 LSA)
    CNC Ported 5.3L Heads Milled to 60cc
    FAST 90mm Intake/TB
    and various supporting mods

    What do you guys think?
    you could go either way , but i find going sd has big advantages ; ie smother more consistent idle , sharper throttle responce , more hp , just to name a few

    cheers mcefab

  4. #4
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    It always depends on the setup, but sounds very likely to be a good SD candidate...

  5. #5
    Member
    Join Date
    Jan 2006
    Location
    philly area
    Age
    34
    Posts
    146
    You can prob pick up some power goin SD.... but no need in an allmotor car with a mild set up like that.
    Non Sponsors

  6. #6
    TunedbyFrost.com Tuner Frost's Avatar
    Join Date
    Jul 2007
    Location
    Richmond VA
    Posts
    2,415

    LS1.com Sponsor
    GM Tuner

    Quote Originally Posted by Frans96ss View Post
    You can prob pick up some power goin SD.... but no need in an allmotor car with a mild set up like that.

    For H/C setups, I favor it more and more every day...

  7. #7
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    Quote Originally Posted by Frost View Post
    For H/C setups, I favor it more and more every day...
    me too.....mines going back to speed density this spring. I ran SD year before last and ran the maf last year. I preferred how it ran without the maf. It just makes the light cruising and idle areas easier to nail down IMO. I'm no expert by any means....just what I experienced with my car.

  8. #8
    Junior Member Dezert's Avatar
    Join Date
    Aug 2008
    Location
    missouri
    Posts
    29

    Black
    98 TA

    SD vs MAF

    So what exactly does the SD do differently than the MAF?

  9. #9
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    hmmmm.... Interesting. I really want to know more about SD tuning. Still possible with HPtuners?

  10. #10
    Junior Member Dezert's Avatar
    Join Date
    Aug 2008
    Location
    missouri
    Posts
    29

    Black
    98 TA

    I Just had the SD tune done on mine today and it was done with the HPTuner. So yes that is possible. I just wanna know the difference in the tunes and why 1 is better than the other?

  11. #11
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Quote Originally Posted by Hi-Po View Post
    hmmmm.... Interesting. I really want to know more about SD tuning. Still possible with HPtuners?
    I did my SD tune with hp tuners.

    I would say a good reson to go SD is the fact that you take the MAF out of the equation and (dumb down) the system, taking out more variables and its easier to force the computer to do what you want it to do vs. what it wants to do.

  12. #12
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    Quote Originally Posted by mark21742 View Post
    I did my SD tune with hp tuners.

    I would say a good reson to go SD is the fact that you take the MAF out of the equation and (dumb down) the system, taking out more variables and its easier to force the computer to do what you want it to do vs. what it wants to do.
    I have heard that also. Whats involved in "taking the MAF out of the equation" though? Or is this one of those things you should just say, wait untill you get your HPtuner and laptop?

  13. #13
    Junior Member Dezert's Avatar
    Join Date
    Aug 2008
    Location
    missouri
    Posts
    29

    Black
    98 TA

    well if you or someone you know doesnt have a HP Tuner you wont be able to disable the MAF. When they disable the Maf they will reset your tables to compensate for the MAF being gone. I am really satisfied with my SD tune. The car seems so much more responsive now. Once the Maf is disabled you can just take it out of the car and run a solid hose or tube from the Airfilter to your Intake.

  14. #14
    Veteran Hi-Po's Avatar
    Join Date
    Nov 2005
    Location
    Florida
    Posts
    10,461

    Black
    1999 TA WS.6

    Quote Originally Posted by Dezert View Post
    well if you or someone you know doesnt have a HP Tuner you wont be able to disable the MAF. When they disable the Maf they will reset your tables to compensate for the MAF being gone. I am really satisfied with my SD tune. The car seems so much more responsive now.
    I just bought HPtuners with LC-1 wideband. And a laptop.

  15. #15
    Junior Member Dezert's Avatar
    Join Date
    Aug 2008
    Location
    missouri
    Posts
    29

    Black
    98 TA

    Kewl then your a step ahead of me. I cant tell you exactly what to do once you disable the MAF because I didnt program mine. I had it done by 1 of the racers here localy but I am sure someone here can tell you what to change in your tables to compensate for it.

  16. #16
    Member Bouvers's Avatar
    Join Date
    May 2006
    Location
    Canada
    Age
    31
    Posts
    857

    Blue 1997 Trans Am(Sold)
    Pewter 2001 Trans Am Vert

    I have a tuner here tell me that he feels safer with SD over MAF and that he runs it in his own car. I understand how it works slightly but to me fundamentaly it still doesn't make sense how only using one tool could ever be safer then using two?

    I mean isn't it easier to lean out a tune when only using one sensor rather then two?

    maybe I'm oversimplifying... thanks for the help.

  17. #17
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Quote Originally Posted by Bouvers View Post
    I have a tuner here tell me that he feels safer with SD over MAF and that he runs it in his own car. I understand how it works slightly but to me fundamentaly it still doesn't make sense how only using one tool could ever be safer then using two?

    I mean isn't it easier to lean out a tune when only using one sensor rather then two?

    maybe I'm oversimplifying... thanks for the help.
    i have a good situation for you. with the MAF hooked up the computer will take all of its fueling comands for the MAF, unless it is overwhelmingly off the charts.
    i had an intake tube leak after the MAF, before the TB, it kept seeing the amount of air coming in through the MAF ad sent my A/F ratio to almost 20:1.

    sealed the leak and it dropped back to 14.8:1

  18. #18
    Junior Member Dezert's Avatar
    Join Date
    Aug 2008
    Location
    missouri
    Posts
    29

    Black
    98 TA

    So your saying with the SD tune you wont have that problem. Becase the comp is not reading what the MAF is sensing?

  19. #19
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Quote Originally Posted by Dezert View Post
    So your saying with the SD tune you wont have that problem. Becase the comp is not reading what the MAF is sensing?
    basicly just unplug your MAF andyou will be automaticly set into SD mode and your fueling will be determined by a preset table (VE table) based off of your MAP and TPS.
    but you are going to be running in SD, you have to fine tune your VE table which in stock programing is just close but needs lots of improvement.
    that is were you open up hptuners scanner, datalog, tune and repeat sevearl times till you get the base programing nailed down

  20. #20
    cutting and welding mark21742's Avatar
    Join Date
    Mar 2008
    Location
    mercersburg pa
    Posts
    6,443

    hugger orange
    2004

    Quote Originally Posted by Dezert View Post
    Kewl then your a step ahead of me. I cant tell you exactly what to do once you disable the MAF because I didnt program mine. I had it done by 1 of the racers here localy but I am sure someone here can tell you what to change in your tables to compensate for it.
    all you have to do to disable the MAF is unplug it. if your intake air temp sensor is incorporated in the MAF then you have to replace it with a stand alone IAT ( know this sensor came stock on my 04 GTO, and was not built into tge MAF. I'm not sure abouy the F-bodies

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 1 Bar Speed Density tune
    By kogelch in forum GM Trucks
    Replies: 3
    Last Post: 11-19-2012, 06:07 PM
  2. speed density or maf tune
    By 65ls1 in forum Forced Induction
    Replies: 33
    Last Post: 12-21-2007, 06:10 AM
  3. Needing a Tune Speed Density or Maf ?
    By blewbyu in forum Computer & Tuning
    Replies: 1
    Last Post: 10-27-2007, 09:25 AM
  4. Finally going Speed Density Tune Only...
    By HUGGER ORANGE SS in forum Rocky Mountain Members
    Replies: 26
    Last Post: 10-10-2007, 03:19 PM
  5. MAF VS Speed Density Tune!
    By phoenix1987 in forum Computer & Tuning
    Replies: 1
    Last Post: 01-24-2007, 07:20 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •