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Finally it is here

Old 01-06-10, 03:50 PM
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Finally it is here

I have notice the lack of information on the apex sac for the FC a lot of people have mixed views on this piggy back computer. But if used correctly it can be just as good as other entry level piggy back systems for half the price. I will start by going over the uses for the unit first off I would like to say that this should not be used if you have a bigger turbo or running more boost than stock. The reason being the sac only tricks the ecu into adapting to other than stock engine components. Suck as bigger injectors higher flowing exhaust and other mods. Also I would only recoomend the safc for a turbo car if it will only be running the basic mods such as intake/exhaust/front mount intercooler/blow off vavle. Really any more than that and a you will need more tuning options. I have found the safc to be very help full in na fcs.

It will allow you to run bigger injectors safer, increase fuel milage and identify problems with the car better. Also being able to watch the tps signal real time is great for getting the most fuel mileage form your car.

In stall when installing the safc into your car please either use a soldering gun or ateast buy the higher grade crimps that have heat shrink on them. There is nothing wrost than paying for a tow bill for some thing you did.

how to install here: http://www.1300cc.com


Once you have the safc unit in place you must set in up or the car wil not start. First step in to intazlie the unit it is under the ETC. option . next you must seect the car which is 4 cly with the arrow pointed up to the right. This setting means that the tps input to the safc /ecu reads 0 to 5 volts and with the arrow pointing down meaning the tps reads 5 to 0 volts. if you set it to ** this does not use the tps signal to make correction it also block the use of the lo throttle settings with this setting it is done strictly by rpm (example if you have the fuel correction set at +15 at 3000 rpm then you safc will start to to correct ar 2000 rpm and slowly increase as no matter the throttle input. this can be better some times with the S4 Na as I have noticed. mainly because the S4 has a short sweep TPS. next is the sensor selection this is the first option in the ect section for all FC's use flap style and for the S5 it is 6 in 6out and for the S4 it is 5in 5 out. what this does it tells the safc the speed to convert the airflow signal to (example 8 in 8 out is would read 2.3% airflow at idle while 5in 5out would read 1.3% airflow.) now alot of the S4 guys are going to be a little mad when they look at their airflow at wot because it will only go to 55% maybe 57% i have yet to figure this part of the safc out.

leave comments and questions please i will add more later.........
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Old 01-17-10, 02:16 AM
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i would highly recommend wiring it to read boost rather than TPS even with the S5

Im using S5 electronics and had it hooked up to the TPS first and switched it to read boost after, running it off the boost works a hell of alot better with tuning

i dynoed 313.5whp and 289ft-lbs last year and should be around 350whp this year my best 1/4 so far is [email protected] should have been in the 11's lol ran 12.1 3 weekends in a row, i need slicks i was using bald bfg drag radials 225/45r17 on steelies with an AFC neo, knightsport chip, 6 550cc injectors,aem WBo2, garrett hybrid turbo
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