It will probably never idle quite right with those huge primary injectors.
What is your fuel trim at idle?

 

STFT is +25% sometimes +24% when running 3_5a. I love how it runs with the 3_3a, a bit on the rich side but still pulling strong, not as strong as 3_0 though

I know once the idle gets fixed it will probably change that... but im sure you can include a sequence where I can get both idle and WOT running awesome. Good job so far, thanks a lot!

Also, after setting it right, can you also do the temps 185 ~ 195 and a VALET version? :D

 

M4f, do you know if your injectors were tested to see actual flow rates? My 730cc injectors actually flow 735cc. So yours could be off just enough to screw with your idle

 

I wonder if Jeff has done a 6 port pettit kit yet?
olddragger

 

Why would I get the hell out of here?
My problem is that I am in the 12s at the 5k to 7k range which in the instructions states that might be bad!

Everything else is perfect!

 

Don't take it so literal. He was just trying to get MM to work on his car first.

 

lol.

Because your lean issue doesn't effect my car

I was joking.

 

No no I wasn’t upset or anything….
I just thought that maybe you guys knew something that I didn’t!
Making sure the 12s that I was seeing was in fact .. a problem …

That’s all!

 

you want to be +/- .3 of 11 afr.

12 would not be desirable.

 

Not bad, just the "edge". I'm actually 12.1:1 at 7k as well on my car in 3rd gear.


Yes. Joff's car.

 

heh. I tried to click on the greddy turbo upgrade link in your sig, Jeff...

Looks like you've angered the proxy server in verizon. They think the site contains something NSFW. That's how bad *** the GT3071R is.

 

Really? I wouldn't of expected that, Mazda has put 680cc primary's in stock RX-7's!

Good question, what are your LTFT's

 

The RX-8 PCM has a table for the 290cc. Going up 100% on the injectors effectively lowers the granularity of the idle control to one fourth.
Since the closed loop operation is looking for 1.01 lambda, that hundredth is going to make for a really unhappy PCM.
Not saying it can't be done, but different cars are going to react differently.

 

I HATE MICROSOFT.... anyways...

My car runs awesome, just idles rough... My LTFT is in +5% and steady, drove it all day yesterday and today, stayed at +5.

AFRs at 11.2, car not bogging, so I'd say it's very close to 11.2 or at 11.2 exactly, too bad the stock WBO2 doesn't read past 11.2! >: /

 

Have you verified that both trailing plugs are firing?

 

This started after I installed the CAI. It was idling good with the GReddy MAF housing/filter.

I haven't installed the MazSport ignition solution yet, so I haven't installed new plugs yet either, will wait 'til I get the ignition upgrade installed.

 

New discovery:

I had a muffler 3.5 ID pipe, switched to 3.5 OD vibrant one and now....

LTFT went to 9, STFT went to 15~18.
WOT AFR got better, 11.2 until 7.5k, then 11.8~12.0 at 9k RPM. (GReddy stock turbo...figures)
Car runs a lot better, idles better as well, but still needs some tweaking with the idle but if you take idle it will take at WOT and it will go lean.

 

I don't understand that statement. What do you mean?
Once you have a stable idle, tuning the top end has no effect on it.
You have "discovered" that the MAF tube has a massive effect on the operation of the motor.
That was a step in the right direction.
Now, we can move forward.

BTW - your MAF tube still necks-down too soon after the MAF itself.
It should be in the middle.

 

Are you in the v3_0 map?
If your LTFT & STFT are as stated above I think you need to go with one of the “a” map series!

EX. I am in the 3_3b right now and my LTFT are at -0 and my STFT +-3 most of the time!

 

I was told it should be 6 inches from the last 90 deg. turn coming from the air filter. I still have another 9" 3.5 without a hole, should I do it 4.5", MAF hole, 4.5"?

I dont know but everybody tells me the changes in maps dont affect WOT, well it does on my car. If I mess with my idle, the car either runs richer or leaner. I don't remember in what direction depending on a or b, but I found that 3_3a is where my car at WOT runs it's best with 11.2 afr's. I think I'm the only 650/780/290 right now and I just can't get the same results as you all with other injector sizes. Also, I found out reflashing while car is warm/hot has different effects than if you do it while the car is cold. Found that out today. I have to wait for the car to cool down to get it to idle. If I reflash while car is hot it just doesn't idle at all, stalls, etc etc.

Oh and another thing, my 3_2a (which I wanted to try) has 290/380/380 when you display the info on the map, so didn't even bother to try it... Somehow it got slipped in the .ZIP file?

 

Once you reflash, you shouldn't do it again until you have 3 - 5 complete drive cycles.
Otherwise, you have no idea what the net trim effect will be.
If the trim is close, leave it alone for a few days.

I'll check your 3_2a. Its probably just a mislabeled text line.

The vX_Xa files do increase the amount of fuel in boost as you go up the series.
The vX_Xb do not affect airflow above 100 g/sec as you go up.

 

What do you comment about the MAF 3.5 pipe? I have 3"-MAF-6", should I do 4"-MAF-5" or 4.5"-MAF-4.5"? In reallity the length before and after MAF are less because MAF is 1.25"...

 

The i.d. of the MAF tube should be exactly 3.375" and should be at least 2.5" on either side of the MAF with a screen at the inlet.

 

is anyone running a boost controller while running this if so which one.

 

i'm using greddy profec 2 spec b. but it shouldn't matter what you use.