hello everyone. i am rebuilding my engine to my 13b fc with a safcII already installed (needs a tune when i rebuild it). can someone tell me the advantages of upgrading from a safcII to an rtek? i already have a full exhaust, intake box/cone, and a mild port (rebuild will open those ports up). i also have a flywheel. can anyone approx the hp difference so i can decide if the gains are worth the money?
thanks for your time, ive been forum crawling for a while and am ready for an answer lol.

 

if you are upgrading to an rtek 2.1 then you can just throw that s-afc in the trash cause it'd be useless.

With the 2.1 you have full control over fuel and timing across a 3d map. It will also let you adjust things like starting fuel map and idle setup in the ecu. You can also data log so you can see how every aspect of your engine is working.

 

If you go with a stage 1 ECU, it takes some of the burden away from the AFC to compensate if you have larger injectors installed. It also gives you a more headroom in the injector DC and safer timing so they make a good combo. Or you can go stage 2 and just sell the afc.

 

how about horse power gains? is it easy for tuners to tune like the SAFC?

 

The ECU alone won't give you HP but enables you to extract HP from your mods. Because of this, we make no HP claims. Actual gains depend entirely on the mod level and the quality of the tune.

 

Technically it will be harder for tuners to tune, because there are ALOT of options for it. Remember that is a good thing. If you can afford it deffinatly get the 2.1. If not get the 1.x that you need and use the SAFC to tune. The 2.1 is really a good deal though so if you can, get it.

And the SAFC is not useless afterward. it make a very nice (metric) boost gauge.

 

well its a ported NA with a full exhaust/intake, with a flywheel, ignition amp/wires. i just dont know if its going to be more or less than a 10hp gain for 600 bucks+tune

 

yea, you could probably pull more then 10 horses from it, plus you will get better fuel economy, depending on your tune.

this all depends on the tune

 

is the r-tek faster than the stock ecu, or is it business as usual?

 

Its the fastest stock ECU in existence.*






*when riding in a Bugatti Veyron.



Sorry but your question makes no sense. What exactly are you asking? As people here already said, its all about your mod level and your tune. When we ship it back, it *IS* the stock ECU, so its no faster or slower, and doesn't "make" any more HP than the stock non-rtek ecu.

 

ok, lets try this another way.....

an ECU (ANY ECU) does not make the car slower or faster. someone can have a friggin MoTec and be outrun with some one with the same car on stock ECU. Its what you do with it. having an ECU that allows the user to manually adjust the fuel and timing maps (among others things)a llows you to greatly increase the cars performance, even on a stock vehicle, but most noticably on modded cars.

FWIW, most ppl dont get aftermarket ECUs cuz its fun, or they reall wanna super fine tune the car (unless your serious about racing), most ppl get them out of necesity. once you mod the car to a certain point, it becomes unwise/impractical/impossible/irritating to run a stock ECU, plus you cant get the full potential out of the mods you paid so much (or little) for.

on the topic of the main question, i think there is an advantage to running an rtek and SAFC/alike. you can get a little more tuning of the fuel maps in (or at least i would assume). all tho i wouldnt want to do this unless you had to. heres an example: i have 800cc/1600cc injectors and run an rtek 2.1. the primaries are close enough to the 720cc preset that i dont have problems tuning the low end. BUT, on the high end (the secondaries come on @ 3700 (altho this can be adjusted on the rtek)) i have way to much fuel. the Rtek allows for +/- 37.5% fuel correction. im almost all the way negative and still seeing low 10s (@meddium boost [7~10psi]). now i will be going standalone in the not-so-distant future, but what to do till then? put on smaller secondaries? thats another couple hundred $$$. turn down my FPR?? then i compromise the rest of the rev range...put the SAFC i have sitting around on there and pull even more fuel??? ....possibility.....

see where im going? not to mention, but as someone stated earlier, it makes for a nice boost/ throttle % guage

 

With the 2.1 you can LOG data which is a very useful feature so you can review your logs and see whats going on(afr, temps, timing, ect), and adjust accordingly. You can also view logs as graphs on a computer which is uber awesome...

After inputting the MAP timing it felt more torquey on the bottom end...

Can't do that with the SAFC.

 

+1 for logs and timing, but were talking about running an safc on top of the rtek. w/o a doubt the stage 2.x rtek is FAR superior to an safc on a stock ecu, but we're trying to list benefits of an rtek+safc setup.

 

alright, i am starting to see what you mean (south paw so it takes a few tries). i think my mods are approaching the limits, but not testing them, yet (after my rebuild i think ill be getting closer with lightened rx8 rotors/exhaust ports). i think i will keep modifying it until i find these limits, and then re-evaluate about the r-tek then. i was just hoping that the r-tek itself may not be as slow as the 80's processor from the stock ecu. last i heard there was some benefit to having a quicker ecu. it seems that- even though i need to re-rebuild my engine to push the limits, the stock ecu and SAFC should run/hit afm #'s as long as i dont do something nuts with the porting or manifolds. thanks everyone for your help!

 

Oh *thats* what you meant?

Its bollocks. This isn't a PC. The ECU has very specific event driven and unchanging tasks that are already accomplished in the time allowed. Speeding up the processor will do nothing. Unlike your PC where you can make it do a few tasks or a lot and a faster processor will get a lot done quicker so it can move on to the next thing you tell it to, a faster ECU will simply have more "free" time to sit around and wait for the next event to happen because there's nothing else to do. It can't fire the ignition or injector early just because it finished it's fuel calculations faster. It has to wait for the proper time.

 

ya and apparently i can rev a lil higher too

 

solorean what kind of power are you making with your set up...do you need a hand controler for the 2.1

 

sell your safc2 if you are getting an rtek.