dyno day today
12-02-2006, 02:41 PM
#1
dyno day today
Had my '06 Saleen on the dyno today to get a base figure before I upgrade it after the new year, they first ran it up in 5th but the speed limiter cut in at approx 155mph (4k rpm) so ran it up again in 4th, after 5k rpm the engine leaned right out which i expected which all the technicians said they wouldnt advice holding it over 5k for too long!! see attached photo.
Im stuck trying to decide now if I should go the saleen 40bhp upgrade route or buy the main parts they supply seperatly and get a custom tune to ensure my AF is ok, your thoughts please!
[IMG]local://upfiles/9111/7EC9FB7838284AFDAACB369B11584733.jpg[/IMG]
Im stuck trying to decide now if I should go the saleen 40bhp upgrade route or buy the main parts they supply seperatly and get a custom tune to ensure my AF is ok, your thoughts please!
[IMG]local://upfiles/9111/7EC9FB7838284AFDAACB369B11584733.jpg[/IMG]
12-02-2006, 03:34 PM
#5
1st Gear Member
Join Date: Oct 2006
Location:
Posts: 112
RE: dyno day today
good question....i am actually thinkin that after i get my saleen upgrade that i'll swing by jdm here in NJ and get a dyno and a custom tune....not sure yet cause i am confused as always lol 
....but good luck with everything
....but good luck with everything
12-02-2006, 06:27 PM
#6
RE: dyno day today
ok someone has mentioned to me that my vacuum routing might be wrong and this is adding to the leaning out, now being a constructin worker and no mechanic would this be possible and if so what should be where?
12-02-2006, 07:58 PM
#7
3rd Gear Member
Join Date: Jul 2006
Location:
Posts: 827
RE: dyno day today
Ninja,
The stock 2006 SC will lean out regardless of your vacuum routing. The leaning out at 5k is a function of the mass air sensor being pegged, and thus completely out of electronic control. The only fix is a custom tune that adjusts the transfer function (this will buy you some play with the A/F), changing out the maf + a custom tune, purchasing the 475 HP upgrade kit from Saleen (no guarantee of an A/F below 12 though), or JDM kit and tune.
If you think you'll end up with a custom tune at some point there is absolutely no reason to go with the Saleen kit. Since the Saleen tune is locked your tuner will have to start from scratch for the most part. The path of least resistance in this case is JDM.
If you want to keep your Saleen "stock" then get the 475 HP kit, install it, get it dyno'd. Then if the A/F is fine leave it alone. If not then get a custom tune.
The stock 2006 SC will lean out regardless of your vacuum routing. The leaning out at 5k is a function of the mass air sensor being pegged, and thus completely out of electronic control. The only fix is a custom tune that adjusts the transfer function (this will buy you some play with the A/F), changing out the maf + a custom tune, purchasing the 475 HP upgrade kit from Saleen (no guarantee of an A/F below 12 though), or JDM kit and tune.
If you think you'll end up with a custom tune at some point there is absolutely no reason to go with the Saleen kit. Since the Saleen tune is locked your tuner will have to start from scratch for the most part. The path of least resistance in this case is JDM.
If you want to keep your Saleen "stock" then get the 475 HP kit, install it, get it dyno'd. Then if the A/F is fine leave it alone. If not then get a custom tune.
12-03-2006, 07:17 AM
#8
RE: dyno day today
ORIGINAL: dotbomb
Ninja,
The stock 2006 SC will lean out regardless of your vacuum routing. The leaning out at 5k is a function of the mass air sensor being pegged, and thus completely out of electronic control. The only fix is a custom tune that adjusts the transfer function (this will buy you some play with the A/F), changing out the maf + a custom tune, purchasing the 475 HP upgrade kit from Saleen (no guarantee of an A/F below 12 though), or JDM kit and tune.
If you think you'll end up with a custom tune at some point there is absolutely no reason to go with the Saleen kit. Since the Saleen tune is locked your tuner will have to start from scratch for the most part. The path of least resistance in this case is JDM.
If you want to keep your Saleen "stock" then get the 475 HP kit, install it, get it dyno'd. Then if the A/F is fine leave it alone. If not then get a custom tune.
Ninja,
The stock 2006 SC will lean out regardless of your vacuum routing. The leaning out at 5k is a function of the mass air sensor being pegged, and thus completely out of electronic control. The only fix is a custom tune that adjusts the transfer function (this will buy you some play with the A/F), changing out the maf + a custom tune, purchasing the 475 HP upgrade kit from Saleen (no guarantee of an A/F below 12 though), or JDM kit and tune.
If you think you'll end up with a custom tune at some point there is absolutely no reason to go with the Saleen kit. Since the Saleen tune is locked your tuner will have to start from scratch for the most part. The path of least resistance in this case is JDM.
If you want to keep your Saleen "stock" then get the 475 HP kit, install it, get it dyno'd. Then if the A/F is fine leave it alone. If not then get a custom tune.
I know the figures are above book but im guessing that could be due to any number of reasons, the colder climate here, our fuel is a higher octane, its a good engine! who knows?! I now have my baseline figure to upgrade from
12-03-2006, 08:52 AM
#9
5th Gear Member
Join Date: Sep 2006
Posts: 3,401
RE: dyno day today
So..... Is there an issue with leaning out at 5k+ on all SC Saleens? Does the 475 kit include a work around for this?
I've seen chat about leaning issues here before but I guess it never really hit home that there would be such a big problem.
I'm not one for pegging the RPM needle but I'm thinking about the impact of the leaning issue during track-days when the motor will be up to 5k+ quite a bit, although not continuously.
I've seen chat about leaning issues here before but I guess it never really hit home that there would be such a big problem.
I'm not one for pegging the RPM needle but I'm thinking about the impact of the leaning issue during track-days when the motor will be up to 5k+ quite a bit, although not continuously.
12-03-2006, 12:47 PM
#10
3rd Gear Member
Join Date: Jul 2006
Location:
Posts: 827
RE: dyno day today
The stock 435 HP SC cars will go to 13.5+ A/F at about 6k rpm, it is the way the car is designed (2005-2006 models). The 475 HP kit (and 2007 models) not only gives more power but it also lowers the A/F ratio to about 11.5-12.5 based on dyno numbers that have been posted.