Tuning the SAFC

[20psi_GST]

Mods:
Hahn Super 20G
Hahn O2 Housing
3" Downpipe
Hahn 3" Test Pipe (open, dumping b4 back tires)
Pasesetter Exhaust Manifold
FMIC
2.5 upper and lower IC piping
Apexi BOV
Apexi SAFC
Greddy Profec B (15% gain, 13psi set-gain, 17psi boost limit, 3%limiter, 60% boost)
Walbro 255
Hahn 625cc injectors
Injen Intake

Right now it is tuned with the stock injectors, a friend tuned it with a wideband. I have NO gauges and my friend had his wideband broken. Right now it is set around 17lbs and runs a strong 11.5 AFR on hi-throttle and a nice 14.2 on idle. But i am a boost freak and hate 17lbs. I would like to put my injectors in and tune to about 20-22lbs on pump gas.

BTW-I DO HAVE MY HONEYCOMBS IN MY MAF OUT

Any advice would help, the SAFC is set to 0% all the way across the powerband in lo and hi throttle right now and seems to run very strong but would just like to run more boost and get these injectors installed. Thanks Dustin

 

[spyderturbo007]

First things first. Get an AFPR and a boost gauge. The 255 is overrunning your FPR and is going to make the car a bi*** to tune. Also, how do you know that you are running 17psi unless you have a boost gauge? You stated that you "have NO gauges".

After all that, install your injectors, do a leak check, then read this about 5 times:

http://www.racingknowledge.org/ver3/viewtopic.php?t=1011

Then post back with any questions.

 

[20psi_GST]

Greddy Profec-B. Built in digital gauge. I ment i dont have an AFR guage or FP gauges.

I dont need to read that because i already have. And i dont need to read it because i know how to use the SAFC. Its not rocket science. I was just wondering on what kind of settings people are running. Its kinda pointless tho since everyone on here runs a damn 16g. But no worries, got it dyno tuned today so its all good. Runs smooth 11.5 all the way through. Thanks for at least a reply.

 

[DAmotorsports]

You ought to consider a wideband at least... You can run a 12.0-12.5 AFR safetly on 93pump gas

 

[GVR4592]

You ought to consider a wideband at least... You can run a 12.0-12.5 AFR safetly on 93pump gas

Show me some proof of that statement.

 

[91etalon]

set the afc to -22 all the way accross on low throttle, do the same on high throttle till about 5500 then from there on go to -25. those are nice concervative settings for your set up. i wouldn't set the boost to 22 until i had a data logger and could record knock and timing. id set it to about 20. once you get a logger of some sort you could go leaner on the afc but dont do it until you do.

 

[matt j]

check out RREs site, they have some base maps that they have done, and you can tune from there.