what exactly the piggyback controls????????

just the fuel mixture?

 

more specifically is controls the voltage the MAF sensor is sending to the ECU, which in turn controls the amount of fuel.

 

thanks

BTW is possible control the timing with other piggyback from split second?

 

contact rrm, i think they have a way. or wait on the ecuflash discussion to finish.

 

Hey Dan, I have been lurking in this thread for a while, and have a question.

I got a RRM Piggy v2 from evoM user and he had it tuned to his mods. I remember seeing that you said base map was all 10s, is that correct, just wondering, I have a auto if that helps.

I also took a look at map in post #48 and wondering if that would work for me?

Mods are: Custom SRI, Custom header back Greddy Evo2 exhaust, not much for breather mods. But they do make a bit of a difference.

I have not hooked up the piggy yet, but wanted to do some research beforehand and this thread looks like a good place.

Any help appreciated.

Thanks

 

That tune was for a p&p manifold and pulley as well as what you have, and I think the bigger difference would be on the low end. The car is pretty rich all around stock, so pulling some fuel out with the piggyback on the low end from this map probably wouldn't be too bad an idea.

No matter what you decide to do you should be very conservative with how much fuel you pull out of any cell until you have some way to measure what you are doing, so add a little up top. You can buy a wideband or you can tune on a dyno with their wideband after the cat(if you have one.) If you stay above 9.6 for whole map you should be safe until you decide how you are going to really tune it.

 

Daniel, For your turbo just slap some modified WRX inj or at least 560-600cc. And happy tunning..! I leave my computer to go to "check engine" for a while until it gets to idle ok, after that it will not try to automatically selfadjust and that leaves me with a clean canvas to start tunning. The only bad thing about it is the "maldito check engine" but after having a few power pulls i forget about it..!

 

what do you mean by "modified" wrx injectors? and what AFR are you running? Will you post your map, or at least email or pm it to me? I just want to see what a good starting point would be for me.

 

Dan, I've installed my Innovate wideband yesterday but i don't know how to record AFR vs Rpm... All i got is AFR vs voltage of each wire of the sensor. Do i need the Rpm converter from innovate or is there an option that i did'nt catch? I've read the entire manual provided with the software but didn't find anything about that...

 

it won't log rpm, I bought the tactrix cable mainly so I could log my rpm to the wideband AFR, plus I want to be able to get rid of the piggyback someday. you can kind of fudge it between the R4 recordings and a few third gear pull logs from logworks2. I think I have posted somewhere in one of the threads about the piggyback a pic of what cells you should see the MAF hit in a WOT pull. That will simplify it enough for you to just go off the wideband log alone.

 

I remember to see that thread but where??? I spent about an hour to search on all threads about widebands to finally found it on the "cam and ported head" thread . By the way i've done a couple of pulls with your last map and it's great for me even if i have a CAI instead of a SRI. The AFR stays all around 13,3-13,7 except for some peaks at 14,7-14,9 at low Rpm and some 12,1-11.9 just before cut off. I'm gonna bring a laptop and a friend to serve me as a logger for volts and Rpm to set it up perfectly .

 

I wanted to stay a little rich up top b/c it temps vary so much with the sri. Tip in will always show lean, it takes a little time for the AFR to actually change on the wideband reading (it's a couple feet from the exhaust ports for one thing) You have pretty much the same mods I have, so I am not surprised. Your lean condition down low could be in part due to the temp difference between our locations too. What MAF voltages do you reach up top? With a CAI and being in Canada you may hit a higher MAF voltage than I do, I am sure your car is faster up there than mine down here

 

this is the post and map we are refering to:

This map is the same as in post 48 of this thread.

 

can some body explain me how get the map tracing with the piggyback

 

on the main R4 screen there is a record option, you can plot MAF voltage for both maps A and B and RPM against time in some unknown value. You can zoom in pretty far on the graphs too, so the sample rate is pretty high. You will hit more values than what is on the graph above, but you will definitely hit at least those values. go to the view menu afterwards and select view recordings. there is a drop down list of all the recordings you have taken, select one and you can see the that graph.