stage 2 injectors and safc fuel controller

[blksrt4_2005]

how would these two work together????

[Turbodog97]

Very well. The s2 injectors are plenty if your plans are maxing out that little stock turbo or touching lightly into the big turbo world like I have. The safc is supposed to be just a little bit harder than the dtec to use. Anyways, back to the original question, they would work great together.

[blksrt4_2005]

well im planning to get them...... than get a ported turbo with a bigger wheel
with a ported manifold wit a external wastegate...



http://www.pt-performance.com/showPr...1&cID=9&pID=59

[Turbodog97]

I'm not sure if it's personal choice or what but I would suggest looking into the e1 and e2 by realtune rather than the sst from ppt.

[blksrt4_2005]

if i was just to put the stage 2 injectors and not tune it would it slow me down....and is the safc just a "put on and go" or do i have to buy something else to make it work...???

[ccopriviza]

i run a 50 trim with an afc and 750 injectors..... what makes this turbo "better", as they said than a big turbo? other than a quicker spool, wouldnt you still make better power off of a big turbine?

[Turbodog97]

Originally Posted by ccopriviza

i run a 50 trim with an afc and 750 injectors..... what makes this turbo "better", as they said than a big turbo? other than a quicker spool, wouldnt you still make better power off of a big turbine?

The 50 trim is the best turbo for a spool/power ratio. Since the srt has such a quick redline having a humongous intake wheel would make no sense. The 50lb wheel in the 50 trim allows for a quick mid-rpm spool but still a close to 500hp max. You would make more power off of a bigger wheel...with say a 60trim but it wouldn't be usable...like explained before.

[Turbodog97]

Originally Posted by blksrt4_2005

if i was just to put the stage 2 injectors and not tune it would it slow me down....and is the safc just a "put on and go" or do i have to buy something else to make it work...???

I tried the whole "s2 injectors by themselves" deal and it was fine in the winter when it leaned it out just enough to compensate. Then when summer hit, my long term fuel trims were so ridiculous that I was actually spitting gas out the exhaust and the car would bog down when going down the track. I bought a dtec fuel controller and that fixed everything. The safc will need something called a tach-driver to make it work. The safc is also a little bit more difficult to use depending on your electronic knowhow. I wouldn't suggest the dtec though because they have maf harness issues, which I've had since I've owned mine...and their customer service isn't very helpful on the topic.

[blksrt4_2005]

can i hold 18psi with the injectors alone???.....when i brake boost with the stock injectors i hit a fuel cut..... are the stage 2 injectors goin to help it not do that????.....i have the greddy profec electric boost controller...

[Turbodog97]

The injectors are just going to give you enough fuel for 18psi, not do anything to hold that boost. Holding that boost will have to do with the wastegate spring you are using at how well you tuned that profec. The larger injectors will help out with fuel cut...primarily because of the fuel controller doing it's job.

[blksrt4_2005]

oh ok...because i got a huge fuel cut today holding 18psi in 3rd gear so i turned it down till i get the injectors....

[blksrt4_2005]

is their any how tos for installing the injectors

[Turbodog97]

Installing injectors in the srt is one of the easiest things to do.
A) Get a bunch of rags and a 12mm(Im pretty sure) deep socket
B)Place rags around snap fitting on fuel rail
C) Unplug fuel line from rail(clean up extra gas)
D)Undo the bolts that hold the rail to the manifold
E) Carefully pull(starting left to right) the injectors out of the manifold
F) Undo the clips that hold the injectors to the rail(pull out injectors)
G) Place in new injectors and reinstall clips. I suggest new o-rings which are available from auto stores for a couple dollars.
H) Redo all the above steps.
I) Prime the car about 5 times before starting(put the key in and turn to the 2nd position so that the fuel pump turns on and then off).
J) Start the car and look for leaks. Drive around...and look for leaks. A couple days later...look for leaks.
K) You're done.

[blksrt4_2005]

i did it ... it feels like the car is running much stronger in the top end.....
what does the tach driver do for the safc fuel controller???

[Turbodog97]

What size injectors did you use? The point of the tach driver is to give the safc an rpm source(if I remember correctly). Only some fuel controllers need them....one's like the dtec do not. I would highly suggest getting a fuel controller soon if you put in injectors any size about 577cc(s1's).