Apexi SAFC2 Opinions
10-13-2004, 09:50 AM
#1
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Posts: n/a
Apexi SAFC2 Opinions
I just grabbed a brand new Limited Edition Black Apexi SAFC2 on ebay for 265$ shipped 2 day Air. Just wondering how good a tune you think I could get with the Cartech and Walbro 255lph FP? Also, what does everyone think about the SAFC2, i know i am going to need it when i dynotune, but is it really just an expensive POS? 
10-13-2004, 10:26 AM
#2
No, it will work fine as long as you can figure out how to get the Cartech under control and get the fuel pressure in the ballpark.
Tune first with the Cartech and then fine-fine tune say 0.5 AFR with the SAFC.
Tune first with the Cartech and then fine-fine tune say 0.5 AFR with the SAFC.
10-13-2004, 12:06 PM
#5
Originally Posted by IceY2K1
Not that I know of....StephenMax can probably give you a few pointers to start with though.
10-13-2004, 12:33 PM
#7
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I have an SAFCII that I use in conjunction with a ROM tune. I think it is great for fine tuning fuel. The knock readout is also nice once you get it all figured out. It also gives you a very accurate tach.
I wouldn't reccomend the SAFC for making really big adjustments though as it will throw off your ign timing. Ignition timing is key to any good tune especially when boosting a car that was not boosted from the factory.
just my 2c
I wouldn't reccomend the SAFC for making really big adjustments though as it will throw off your ign timing. Ignition timing is key to any good tune especially when boosting a car that was not boosted from the factory.
just my 2c
10-13-2004, 03:46 PM
#9
Senior Member
Join Date: Apr 2003
Posts: 181
Well i have the regular vortech fmu on right now so i know i need tunning. Do i need to get the cartech as well as safc, or what if i go the e-manage route, do you still need the cartech? When i say need i know i do not NEED them for it to work obvisouly, but in a tunning sense.
10-14-2004, 09:16 AM
#11
No....the Cartech is just an upgrade to the standard Vortech FMU kind of like the Vortech Super FMU.
You can keep the Vortech FMU just buy the 6:1, which is good for ~340whp@10psi and use the SAFC to remove what you don't need. However, that's at 100% duty cycle, which isn't safe and you really should get larger injectors.
At 90% DC ~306whp
At 80% DC ~272whp<~~~~Recommended DC, however at 10psi you'll be lean with around 300whp probably?
You can keep the Vortech FMU just buy the 6:1, which is good for ~340whp@10psi and use the SAFC to remove what you don't need. However, that's at 100% duty cycle, which isn't safe and you really should get larger injectors.
At 90% DC ~306whp
At 80% DC ~272whp<~~~~Recommended DC, however at 10psi you'll be lean with around 300whp probably?
Originally Posted by VQ30DES
Well i have the regular vortech fmu on right now so i know i need tunning. Do i need to get the cartech as well as safc, or what if i go the e-manage route, do you still need the cartech? When i say need i know i do not NEED them for it to work obvisouly, but in a tunning sense.
10-14-2004, 09:19 AM
#12
i have the walbro/aem fpr/vortech fmu combo.
you have to estimate the fuel pressure first.
I have the 8:1 disk so that computes out to
(1/2) base fp+8*x psi
so 17+8*8 psi=81 psi of fuel pressure (approximately)
Im not sure about the calc for duty cycle, i know that icey and stephen knows it.
from there i can fine tune my injectors.
______________
I have a ? though, what disk should i use if i bump up the injectors?
How much does it affect DC?
you have to estimate the fuel pressure first.
I have the 8:1 disk so that computes out to
(1/2) base fp+8*x psi
so 17+8*8 psi=81 psi of fuel pressure (approximately)
Im not sure about the calc for duty cycle, i know that icey and stephen knows it.
from there i can fine tune my injectors.
______________
I have a ? though, what disk should i use if i bump up the injectors?
How much does it affect DC?
10-14-2004, 09:35 AM
#13
Slimer,
SC'd right?
500cc injectors at 100% DC are good for ~440whp and more safe recommended 80% DC is good for 353whp.
So, you won't need the FMU...that's the whole beauty of having properly sized injectors.
SC'd right?
500cc injectors at 100% DC are good for ~440whp and more safe recommended 80% DC is good for 353whp.
So, you won't need the FMU...that's the whole beauty of having properly sized injectors.
10-14-2004, 09:44 AM
#15
Somebody needs to try that as my other thread suggests:
http://forums.maxima.org/showthread.php?t=345200
http://forums.maxima.org/showthread.php?t=345200
10-14-2004, 02:44 PM
#17
well here's the deal.
matty just had a lot of the same issues that you are asking. so whats happening is that we are carrying over coversations from those threads into yours.
with the cartech, you are going to need a mityvac to test out what "disk" you are using (its not really a disk, its a little flange inside the cartech) that disk is determined by the bleeder valve at the top.
i dont even have one or have ever seen one in person, but its been covered.
check at the bottom of this page or the next ones.
there is A LOT of tech answers there.
matty just had a lot of the same issues that you are asking. so whats happening is that we are carrying over coversations from those threads into yours.
with the cartech, you are going to need a mityvac to test out what "disk" you are using (its not really a disk, its a little flange inside the cartech) that disk is determined by the bleeder valve at the top.
i dont even have one or have ever seen one in person, but its been covered.
check at the bottom of this page or the next ones.
there is A LOT of tech answers there.
10-21-2004, 09:05 AM
#18
Originally Posted by ChristheNite
is there even a rough write up for tuning w/ cartech??
Done!
http://forums.maxima.org/showthread.php?t=347718
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