derekfc

first off, please pardon my lack of knowledge in this world. im used to rx7s and haltechs. cobb and rx8 are both new to me but principles are the same.

anyway.

we put a greddy turbo kit on an 04 us spec mt rx8 and originally went with the emanage but switched to ap and loaded MM's map for 04 us manual turbo cars.

car is stock besides the turbo kit and ap. no fuel upgrades. no sensor upgrades besides standalone wideband.

when driving, car is good. wideband readings are good(13-14:1), inj duty cycle is good(15-20%), car is happy.

if there is any kind of decent acceleration the car is fine then duty cycle goes crazy and maxes out(99%) and afrs climb(10:1) the car hits. like just a quick engine cut. off throttle and its back to being fine.

we pulled a datalog of doing this twice so someone can analyze it with me. im not exactly sure how to interpret what is happening but its clear that load is above 100% and the maf sensor is above 100% as well as high inj duty cycle when this occurs. another odd thing is that the factory oxygen sensor seems to not read correctly, or is at some kind of default value

please, i know this is a lot of reading and i have a low post count but i would really like to figure this out.

log is attached. take note of row 30 and 229 as this is where we feel the hit/miss

bose

iTrader: (5)

I'm no expert, beginner at best.
Have these fixes been performed on the kit?
https://www.rx8club.com/major-horsep...-81825/page19/

wcs

iTrader: (2)

^^^^^ and it's

Hard to say really without seeing the MAP you're running.

I've seen some of MM's base maps and once you hit 100% Calc load the AFR's fall off a cliff.
(They are not a plug and play map they are a base map to get started. Do NOT mash go pedal!!!)

Have you scaled the Maf for the Idle range and Cruise points on the Maf table?

What does the MAX Calc Load table look like?

What have you done so far in your tuning process?

edit:
Car is happy at cruise most likely because it's still in Closed loop. When you drop in to Open Loop things are going to hell

edit edit: I like to log the STFT as well .. when it reads -.16 you know the ECU is in OL

derekfc

i cant find anywhere to download accesstuner

here is the map

9krpmrx8

iTrader: (46)

Man, I don't know where to begin. You are going rich because you are not tuned, it is simple as that. What you are running is a generic base tune.

wcs

iTrader: (2)

That map like 9k said is a base map.
It's also a locked vendor map that is not tunable from your stand point.

Download ATR from here:
AccessTUNER Race Request Form

Start tuning using the Stock Style map (you won't even be able to load that MM Map using ATR).

The car is drivable with this tune but try not to go over 100% calc load until you get things tuned.

The base map is actually good to 125% load (maybe 1 or 2 psi) but that is no guarantee that the tune will not be too lean or too rich.

In boost your target afr's will be 11.2 ish ... no more than 11.9 depending on how much boost

You've got lots of reading to do, most of the answers are in threads on this forum.

derekfc

so MM sold this guy a locked vendor map that i couldnt modify if i wanted to? MM told this guy that its done and all ready to go. just load it on and he should be golden.

why would anyone 'sell' a worthless base map and tell their customer that its an end game?

9krpmrx8

iTrader: (46)

MM sold that map to that guy and the map is locked to his car, not yours. His maps cannot be resold and used on another vehicle. You did not pay for MM's service so you cannot use his map. But that's beside the point because that map was created for another so even if you could load it, it would probably not work well anyway.

he doesn't sell a base map, you use that as a base starting point to tune. You have a a lot of reading to do.

bose

iTrader: (5)

If he bought it new through MM why doesn't he have him tune it the rest of the way? My bet is your customer is confused.

derekfc

i think we are having some communications issue.

this map that MM sent is for my friends car. im not trying to use it on two different vehicles. it is a map that MM sent us after we told him the modifications to this single vehicle.

since it is a base map only, we should be able to tweak it to work correctly but this thread is telling me that i cant do anything with it so basically we need to start from scratch and not waste time with MM's map.

correct?

bose

iTrader: (5)

Yes, he is the only one who can modify his maps. So if he didn't buy the tuning service from MM, it's a dead end street and you will have to start from scratch.

derekfc

yeah ill have to talk with him to see exactly what he bought and did. ive asked a 100 times what he paid for but i cant get much detail from him.

wcs

iTrader: (2)

I would like add to what has previously been mentioned (which I totally agree with)


MM sells a service.
So he starts with these "Base Maps" if you will ..

People are suppose to gather certain logging information in an exact manner and submit the data to MM.

MM then reviews the data and send back another adjusted map for more data logging.

Rinse and repeat until the tune is good and all are happy.

During this whole thing MM is the only that can see or modify the Map.


So back to your point above ... "Yes" MM does sell a locked Map that cannot be changed or seen. But that Map should be a final Tuned MAP. Assuming your friend stayed with the Service to the end.

And of course this goes without saying but if it was Tuned while the car was NA then it's useless as a modified boosted tune.


There is no secret about what he does ... and believe me he has tried and tried to make it easier and easier and clearer and clearer.

Here is his instructions : MazdaManiac RX-8 CUstom Calibration Instructions

Here are the instructions for the Instructions: https://www.rx8club.com/mazdamaniac-...ctions-197783/

There is a lot of good information in there ... that will help you perform the basic logging functions to tune the car.

derekfc

i will log as per instructions and send him the map and see what he does/says

wcs

iTrader: (2)

Please keep us updated

9krpmrx8

iTrader: (46)

Good luck.

wcs

iTrader: (2)

Hopefully MM will help this guy out.
Sounds like his buddy hasn't given him the whole story or even understood things himself.

I can understand his frustration but it sounds like he's pissed at us.
Not even a "cool thnx"

@Derekfc ... when I buy myself an fc ... I'm hoping you'll give me some back scratching help over on the RX7 forum when it comes to tuning.

derekfc

I'm not upset or frustrated in the slightest. I just read more than i write but yrs i am very thankful for the time and knowledge that everyone bestows upon this thread.