sc400 Tuning question
#3
Driver
iTrader: (3)
Join Date: Nov 2008
Location: Texas
Posts: 151
Likes: 0
Received 0 Likes
on
0 Posts
Im curious about this, as Ive read that theres some power to be found simply by tuning the fuel curve. It would make sense that they would run rich from the factory, for safety and reliability.
#4
Lexus Champion
iTrader: (21)
I have the SRT intake which has a piggyback to lean out the fuel alittle. It doesnt get it to where you could with a SAFC but it does work. S&S headers were white inside when I replaced them. JDM Muscle, hey ask some of the guy's in the GS400 section. Rockalex has a Apexi Neo.
#5
Lexus Champion
I have "heard" that SAFC's are ok for minor tuning. Those who want to dig deeper and really tweak with the tuning without going stand alone tend to lean towards MAP ECUx (the MAP ECU3 looks pretty sweet actually!)
#7
Intermediate
From my research a safc will work little as the ECU relearns and normalize the changes maden. That unless you disconnect the o2 sensors, then you´ll have the "Check engine" light on but the ECU will not relearn.
I already bought an AEM F/IC piggyback but its not installed yet. Carlos in his turbo build started using a safc and then move to this same piggyback so I followed him.
I already bought an AEM F/IC piggyback but its not installed yet. Carlos in his turbo build started using a safc and then move to this same piggyback so I followed him.
Trending Topics
#9
Lexus Champion
No personal experience as of yet. It is the direction that I plan to go when I do my swap though. I like the fact that you can start from a base map and tune from there, eliminating the need for a MAP sensor (which on the 2JZGTE VVTi is PRICEY just for the sensor)
#10
Lexus Champion
iTrader: (7)
Actually, on my car, I had no o2 sensors, and it was still relearning. I had to disconnect the CTS for it to stay in open loop. However, cold start suffered severely.
I have an SAFC now, in order for the car not to relearn, I have to reset the computer. I just unplug the EFI fuse under the hood for a little. I have to do it every so often.
I tried to run a relay into the EFI fuse so it would reset after I turned off the key, however I couldn't find a 12+ source that stayed on during cranking lol. SO the car would shut off after start up, and I'd have to start a few times.
I have an SAFC now, in order for the car not to relearn, I have to reset the computer. I just unplug the EFI fuse under the hood for a little. I have to do it every so often.
I tried to run a relay into the EFI fuse so it would reset after I turned off the key, however I couldn't find a 12+ source that stayed on during cranking lol. SO the car would shut off after start up, and I'd have to start a few times.
#11
Actually, on my car, I had no o2 sensors, and it was still relearning. I had to disconnect the CTS for it to stay in open loop. However, cold start suffered severely.
I have an SAFC now, in order for the car not to relearn, I have to reset the computer. I just unplug the EFI fuse under the hood for a little. I have to do it every so often.
I tried to run a relay into the EFI fuse so it would reset after I turned off the key, however I couldn't find a 12+ source that stayed on during cranking lol. SO the car would shut off after start up, and I'd have to start a few times.
I have an SAFC now, in order for the car not to relearn, I have to reset the computer. I just unplug the EFI fuse under the hood for a little. I have to do it every so often.
I tried to run a relay into the EFI fuse so it would reset after I turned off the key, however I couldn't find a 12+ source that stayed on during cranking lol. SO the car would shut off after start up, and I'd have to start a few times.
what mods do you have inorder to need an SAFC?
#15
I need some acutal facts here, not opinions.
Im looking for a good product that would allow for fuel and Timing change's. if its able to tune for Meth injection as well at a center RPM or Throttle level it would be even more of a selling point. I would like to steer away from AEM, if heard and experiences nothing but bad things with them.
What i have found and perked my interest is this:
http://www.perfectpower.com/index.ph...d=51&Itemid=55
Unfortunetly i have called EVERY dealer listed on their page and no one has responded to my inquiry's