ok, so this is the deal.

My car has 2K miles on it (had a rebuild :/ ) and I went to get a tune today.
my set up:

Greddy Turbo Kit
HKS blow off (recirculated)
e-manage Ultimate
and Turboxs exhaust

Since I got my car back from the rebuild... Ive experienced 1 bad thing about it...
when its anywhere from idle to 5kRPM, its AMAZING. super perfect.
then
at about 5krpm or so it goes SUPER Rich and starts to sputter.
and it will sputter all the way up though 7k and on.
i figured i needed a tune...
so I went yesterday, got my tune...... or tried to...
my tunner said that the eManage didnt seem to be taking any of the changes.
he changed the Idle in real time and we did notice that the idle was changing, but as for the rest, it didnt seem to make ANY diff, kept sputtering at 5k.
he tried EVERYTHING, tricking the e man to think its running lean, think its running rich, and the car would do the same thing each and ever run. so it wasnt taking any changes. This happen to any of you??

The spark plugs were changed at 1k miles (Stock Mazda rx8 plugs)

next Q:

after the tune, i decided to just take my car home as is.
and my oil light is on.
i checked my oil, seemed fine..... but just incase, i filled it up with a bit more... light still on. wtf?
drove home (about an hour drive) light still on.
next morning, drove just right now, light still on. I have no idea why thats happening.

its an 04 model.

im planning on contacting Greddy on Monday, but thought maybe you guys might know more of what im experiencing.

Thanks for you help.

 

Wild...Who installed it? Are you tuning in duration or duty cycle? Do you have any log files? If the EMU is adding duration like it should, then the stock PCM might be dumping a ton of fuel, the logs should show that.

Are you wired for intercept or add only on the injectors? What is your AFR? Copy fo the maps, are you using MM's airflow trick? Did this same guy tune it last time?

The list goes on. Need to start eliminating variables, coils, plug, EMU wiring, cat protection mode, PCM adding a ton of fuel, your EMU tune....etc.

 

wow Romeo, I think you need to find a new tuner. You've had all kinds of issues with them, haven't you?

 

One more thing, the richness, is it transitioning into boost, or in high boost?

 

FYI, you should not have to TRICK the EMU to run lean or rich, it should be wired as an interceptor, so it just adds or subtracts PCM duration. So he may be playing with the airflow, which shouldn't really be used for tuning.

 

it happens at 5krpm regardless of my boost.
If i puch it from low RPM, i'll be in boost all the way to 5k then sputter.
if i slowly accelerate and not boost at all once again at around 5krpm sputter.
i dont think the boost is an issue here.

Im gonna head ou to Malibu right now, chill out for a bit, ive had a stressfull weekend so far.

please keep updating me with more info. this is helping me out a lot.
and i'll update you guys with more info on my car to better help you find out what it might be.

thanks again.

oh, p.s. this isnt the tunner from last time, this guy is over in Chino. Bisimoto Engeneering is the place, hes well knows with tunning high performance cars.

 

Need the Maps and the Logfile to help you from here.

Again, make sure MM's airflow map is on there, check coils plugs etc.

And ensure that your EMU is wired correctly. Do you have an AF gauge? Is it wired to your EMU?

 

I am stumped on the oil, if your topped off, unless the oil pump is bad?!?!? I would think you would notice that little issue.

So may be a PCM issue? Sensor?

 

EMU not accepting changes WTF? Do you have the latest firmware? Who installed it? Like Kane said you're not trying to "trick" the EMU, you "tricking" the stock PCM.

Does your tuner have knowledge with rotaries, and more specifically, the Renesis?

We need more info. What is your AFR at 4k? What is it at 5k when the stumbling starts? Have you replaced your coils yet?

The oil light is baffling. It could be nothing but it could very well be something, like the oil pump going out, but I would expect you would see a CEL as well if the pump actually died. There could be something blocking your pickup in the pan- that would show a full level but no oil is actually circulating. But if you drove for over an hour like that, your motor would already be a smolding block of iron by now. I'm betting it might have something to do with a bad EMU install or wiring job- or your stock PCM just hates you.

Like Kane said, we need more to go on

 

HE HE, I bet we are all going to ask the same questions until he gets back.

 

I bet we aren't!

Romeo, what did you have for lunch yesterday? How much did it cost?

 

I need to see log files and the EM2 file.

It is pretty clear that your tuner hasn't a clue or you would have had one of two outcomes:
1) You car runs better, or
2) He could explain what was going on to impede #1.

 

ok, well, 1st of all....
MazdaManiac.......... Awsome Avitar as always. and chickenwafer, I had sushi and it was like...... $100something. (it wasnt just me)

and about my car... I got some of the dyno runs here with me, but im gonna have to scann it and post it.

also.....
I have an AFR (AEM) and on my way to get it tunned, it started to read " - - - "
i thought it just got unplugged (i broke the grey latch it has) so when i got there, i took it off, and the wires had melted (it was touching my exhaust). So I was like Bob Saget! but i took off all of the melted parts and it looked ok.... i put it back on and its still reading " - - - ". so what i might do it cut off that one melted peice and re-solder the cable so i KNOW that nothing happend to it.

as for the eMan. I hooked that up on my own... Could I have connected it wrong? I hope not. i'll have to double check and make sure it looks ok...
:sigh: I love my car to death, but its always 1 problem after another.....

i'll update you guys again with the dyno chart and what I ate.

thanks again.

 

hm.... bad EMU install?
I plugged that up, and it seemed pretty harmless, there were 3 big connectors and they seem to only go in 1 way...
what are things i should look for and or try with the EMU tonight? i unplugged it and plugged it back up..... maybe i accidently cut a wire when i put the lid back on the PCM. who knows. im stuck.... but before my rebuild. it was doind a similar thing. at around 5kRPM it would go super lean, now its going super Rich (which is better) but maybe my PCM is retarded?

 

I wish you had logs....

I had the shop wire my EMU, so can't help you there. Hope MM or tdiddy get up soon.

 

Are you running the Turbo Upgrade harness with your Ultimate?

 

My bat signal is working?!?!!?

 

How long ago was the rebuild done? Was the oil light immediatly coming on after your engine was rebuilt?

 

Yawn! What? What! Whaddya want?

Remote diagnosis is so 20 minutes ago...

 

LMAO

I just think you are scared....

 

I don't know where to begin.
The settings don't "stick"?
Burned wires?
What?!?

 

This is an old thread, but thought Id close it up with some answers for people searching.

A few things that lead to me fixing it:

1. I did some re-wireing to the harness (seemed to fix the richness on top end) - but then again, I unhooked the whole unit up and hooked it back up when i did that.... Could have been not connected properly also. One of those things fixed it.

2. There was a hickup at 5k rpm or so but didnt go rich anymore, just a slight hickup then back to normal all the way up to redline. The fix: I bought an OBD II, checked my codes it said bad AIR valve and SSV valve. Checked those out. they were both unplugged!! plugged them back in. Car runs perfect.

3. sent my emu to Benny at greddy. had him take a look at it. My DIP Switches were some on and some off.... no idea why. said he fixed something on the harness, and put the baseline map (with a little bit of changes on it) back in it. Car runs perfect after that!

4. Overall... Sold the emu, bought the AP.