Through a comparison of a VERY basic piggy back to a fully-tunable stand-alone, you give attributes to the piggyback for easy wiring? I don't think you've set up that EMS right... its not at all comparable to the stock ECU.

 

From what Henrik had posted before, the 1.7 will control the 720cc's as if they were stock 550cc's. I supposed only he can tell us what "safe" boost is on the 1.7.

 

i may get this. would this work with like 850 cc injectors and not have to wory about flooding?

 

it says anything from 720's on up so I'm assuming yes but I think hinreck needs to get in here to answer our few questions. I have a slightly upgraded turbo witch will be seing about 15psi so I would like to know what happens after 12psi.

 

This is correct for the most part. The stock ECU will not adjust timing over 9 PSI. The MAP sensor will only read to 15 so anything over that, the ECU doesn't know how much boost you are running.

It shouldn't be scary. If the ECU is expecting 720's and there are only 550s in there, then you can expect it to run lean.

There will be.

The Rtek is just a chip. The resistors you are talking about have to do with the injector drivers in the ECU. Unless you change the drivers, you still need your resistors.

Need? No. Will it help? Probably. Basically any piggyback computer tricks the ECU into adjusting it's fuel delivery calculations. The Rtek has some of this compensation built in so the F-con doesn't have to work as hard. (tricks ECU less)

We are stading by 12 PSI as safe for a stock turbo'd/intercooled car for use with the chip.

Yes, it would work with 850s. You will still need an AFC to lean it out some. (at least until 2.0)

Regards,
Mike Montalvo
www.pocketlogger.com

 

1.7 is programmed for 720's, nothing larger. It does not sense what injectors you have, how could it? Anything larger than 720's will run too rich. He programs the ECU to control 720cc secondaries as if they were stock giving you a large increase in headroom until you run lean/out of injector.

Plus, since you aren't fooling the stock ECU signal, there is no adverse effect in timing.

 

taken from his site

*Requires 720cc or larger secondary injectors or engine damage will result.

 

Would 680's from a GSL SE work?

 

um maybe you didn't see my post right before yours

 

Do any of these chips make a big difference in a N/A?? Thanks for the advice.. Have a Good Day,

Jimmy

 

Guys, the ECU is programmed for 720cc's. You CANNOT use injectors larger than 720cc's WITHOUT a fuel controller to turn them down.

 

yeah I thought everyone knew that??? the stock ecu is made for 550's or larger and if you have larger you get the safc however with the rtek 1.7 it changes the fuel map for 720's or larger and if you have larger than 720's you need an safc. The only thing the 1.7 does is see the 720's and makes them to where they don't run so rich most I believe because 720's are very popular with the mild to mid modding comunity. I don't think he would make anything for the high preformance in mind because at that point you will just get a microtech or haltech

 

just ordered mine last night.

eric.

 

you have an s4 tII?

 

Right, larger than 720cc's and you'll need fuel control. I just didn't want some noob to read "controls 720cc or larger" and toss in 1600cc's expecting it to magically work

 

They need 2 make a Rtek for S5 TII.

 

ahh gotcha yes it is made specificly for the 720cc injectors like the stock fuel map is made specificly for the 550cc injectors, you can always run higher injectors but you will need an safc. Your right most of the time it's not common knowledge.

 

yup 88 10th ae.

eric.

 

oh ok sorry just saw you had an 86 (obviously non turbo) and a 91 (s5).

 

yea i had them now i got a 10th ae, thanks for keeping up with my cars? haha

eric.

 

Ok- I know 720 or larger, but since the 680's flow less, will I run lean or are they even worth buying?

 

Yes, you will run lean with 680cc's and the 1.7 chip...don't use 680cc's with the 1.7 chip without an SAFC to turn them up. Why is this so difficult to understand??

 

I currently have and Fcon waiting to be installed... which would you recommend... because this seems like it's plug and play and takes the difficulties of tuning fuel... or better yet would the chipped ecu work together with the fcon, since the fcon would be pulling the info from the chipped ecu anyway? just curious....

 

im going to be running the chip with the fcon, the fcon with gcc will help with better fine tuning.

eric.

 

Ok, now I'm scared...There is really no point - what you said makes no sense. It doesn't seem like you guys know how these products work. It should either be one setup or the other, FCON + GCC or Rtek7 1.7. For flexibility with the 1.7, you can use an SAFC (apexi) or SAFR (HKS) for fine tuning. Witht he release of this product, I don't see why anyone would want an FCON GCC combo - it's old, gives less flexibility and costs WAY WAY more.