Hey guys... Is it worth me installing my S-AFC and then get Flashed??? or sell it and just get flashed??? I do like the unit, and used it on my last car with good success... but don't have any experience with Flashes... Right now my car will be BPU... I/E/BC and intercooler piping... I plan to add cams a lil' down the road, as well as a new FMIC... I did a search, but came across a mess... lol...

Thanx in Advance,
Chris...

 

Are you going to do a custom flash or through the mail flash??

If you are going trough the mail I'd keep it so that you can tweek your tune.

If you are going to do a custom flash and have the ability to get it reflashed whenever you add a part, I'd say get rid of it.

If I was in your shoes, I'd keep it. But thats because I like to tinker with things.

 

What the Safc-II will also allow you to do is play with the settings when you decide to run race gas.

 

I have a mail-in flash and I'm finding that I'm having to make some fairly significant changes in both low and high throttle settings to keep the fuel trims reasonably close to zero (using an OBDII scan tool) and get the WOT tuning in an optimal range (using a wideband). I would keep the SAFC.

 

Will keep the SAFC II, very useful if you don't have EMS.
I have mail flash, and still I had to tune the SAFC.

 

I say go with an AFC solo. You already know what it can do and how to work it. I found it a little difficult to tune it right on top of a flash.
What was your last car?

 

I agree with turbolarry......it's gonna be a pain to have to tune in top of a flash becuase now u have to alter ur fuel maps in order to compensate for the flash. Just stick with the S-AFC and get something else in the future if u want. I was actually planning on getting a Works P2 and a S-AFC, but i changed my mind and found a great deal on a UTEC.

 

What are you guys talking about? Why would it be difficult to tune an SAFC on top of the flash? That makes it easier because the flash is closer to what you want than the factory tune, plus you get much better timing advance in the lower RPMs for better low end torque.

 

Both, or just Flash! The torque you get from the timing advance of a flash is worth it's weight in gold compared to tuning an SAFC without any timing adjustment.

 

If you tune with AFC alone, you'll have to significantly lean out the A/F ratio just to meet the level of the flash....sounds like pain in the rear end to me.

Unless you get a custom flash, tuners usually leave an extra margin of safety when performing mail-in flashes. My Dynoflash (mail) is very impressive, but there's still some room for leaning out in the mid-top range. I now use an SAFC to fine-tune the A/F efficiency.

The Flash allows more aspect of tuning than the SAFC alone, as the tuner can adjust boost taper, raise redline, and sometimes even stablize idle. So for $350, you'll get a lot more from a flash than just an AFC.

 

I used to have an S-AFC tuned by TT, but after I got a reflash, I got rid of the S-AFC, so my advice is, if you have the reflash already, get rid of the S-AFC.

 

Show me a log of that flash.
When I tried to tune an AFC on top of a flash it was dead flat timing from 3000-5000 RPMS. Despite any fuel adjustments I made at these RPMS the timing would not budge. I went to the point of .98 volts (stupid rich) nothing, dead flat timing, 5 degrees. At 5000 RPMS the timing then started to advance, but starting so late, it would only peak at 17 degrees at 7000 RPMS. Bone stock the ECU will give you 20 degrees.
Please show me a log of your flash.


1. No. You manipulate the air flow the ECU sees, which aids in timing advance... and it's easy to do.

2. The tuning and timing I mentioned above was a custom flash. It sucked and made using the AFC more difficult. You say you use an AFC on top of a flash, how's your timing. Have you tried it without the flash?

3. Raise redline, yes. Adjust boost taper? It's easier to tune with stable level boost. Stablize idle? You could hack away at your MAS and honeycolms and still stablize your idle with an AFC.

 

I would say dump them both and go with a piggy back or stand a lone.

 

An AFC is a piggyback. It's easier to use and cheaper, but has less control/features than a stand alone

 

Thanks guys...

I have this just sitting here taking up space right now... i was gonna prolly buy a patch harness and throw it on... I was wondering if you guys needed to use it to tune a flash, and, apparently some do... I also was considering using it just to lean out low throttle to save a lil' gas, $2.33/gal is painful, especially how much i just love to drive...

I was gonna prolly shoot with a mail-flash... Until a good tuner like TT or someone hits up my area... and it's not really costing me much as i have the AFC sitting here, just need a patch harness...

About the EMS or something, I'm not really going for rediculous gains... just a lil' bit more power, and then i can concentrate on the suspension......

Oh yeah, someone asked, my last car was a '00 Celica GT-S... Fun lil' car... but not fun like the Evo...