Blown Interceptor

iTrader: (5)

I know what the code is, I never got this or any codes before the Z06 MAF. Any ideas?

This is what I copied from a Stock 2002 Z06 file:

Copied MAF table
Set MAF Fail Freq to 13500
Max Delta Airflow

Is there anything I missed?

Thanks,
Jason


In my earlier post I was having problems w/rough idle and rotten egg smell. My wiring was all wrong, I got that worked out. Just having this problem...

jimmyblue

iTrader: (11)

What do you see for an idle MAF frequency off the new
piece? Is it alive?

Blown Interceptor

iTrader: (5)

Haven't checked it yet, I gave up for the night. I will try first thing in the morning. Thanks!

Blown Interceptor

iTrader: (5)

This may be a stupid question, but just to make sure. You mean scanning the car while it's running, right?


On a side not, before the MAF, when I first the car my A/F was around 15-16. Now it's 17-18...this is with a wideband gauge in the car. Then after a few minutes it goes to 14.7 14.5 14.2

jimmyblue

iTrader: (11)

Right, just want to see that it's putting out -something-. On my
car (A4 with a higher idle load than a M6) I see about 3000Hz
off a similar unit (descreened truck 85mm) at a 750RPM hot idle.

Blown Interceptor

iTrader: (5)

Well, I just checked it. With the gauge display in tuners my MAF shows 1 g/sec, with the table display it shows 0.19. Even with revving the motor a little, there is no change in the MAF.

Here are some pics:







Start up A/F.




This is the connector I got:



As you can see the adapter has the straight through connectors, I did not use them. I used plug-in type connectors...not sure if that matters???


Thanks a lot!!!

Jason

jimmyblue

iTrader: (11)

I guess next step is to see if it has +12V, +5V and ground.
At the MAF side of the connector if possible. May be that
you got a bum adaptor, pushed a pin out etc.

Blown Interceptor

iTrader: (5)

I got this link from someone on the CF:
http://www.lingenfelter.com/instructions.htm






Which chart would you go by? I think I still might have some wires crossed.


http://www.lingenfelter.com/document...05-2006MAF.pdf

The chart's I used are on pages three and four...I went with 01-04 C5 to LPE, I think I needed to go with 1994-2000 Y & F to LPE???


Thanks again for aal your help!!!

Jason

Blown Interceptor

iTrader: (5)

Well, I tried it, it does not work. Getting really tired of working on this, putting everything back to stock. I will order the plug and play adapter from Pace.

I'm gonna run in SD mode until it gets here. Gotta remember how to do that?

Blown Interceptor

iTrader: (5)

After running in SD, the car feels kinda strong. My A/F was lower than with the MAF(11.2 at WOT), with the MAF it's 12.4. Is that normal? If I stay SD, can I adjust A/F through PE or is there another way?


Thanks!

2000c-5

Sounds like the MAF was not tuned correctly. Yes, PE works in SD.

Blown Interceptor

iTrader: (5)

How was it not tuned? It is a stock MAF, I copied everything that is related to that MAF?

jimmyblue

iTrader: (11)

You want to see +12V on the pink wire all the way to pin
D of the 5-wire plug (and the corresponding MAF terminal
if you can get to it) and roughly 5V on the yellow (E) wire; if
the MAF is working it will draw that 5V down slightly by the
pulses it puts out. Those figures are for the connector,
end-on, not the MAF body socket which would be opposite.

Blown Interceptor

iTrader: (5)

I thought it might be the adaptor I got. So I got the one from Pace parts(totally plug and play). Well, thats not it either...I'm at a total loss.



Jimmy, I just checked the Volts again. The pink wire is reading 11.75 and the yellow wire is reading 5.03...

Blown Interceptor

iTrader: (5)

The seller tells me the maf worked before he shipped it...so I might either run SD or put the stock MAF back on and sell the Z06 maf. I just can't figure out how to get this thing to work.

Blown Interceptor

iTrader: (5)

The seller emailed me and told me I needed to change these tables, they are in EFI live. Which I don't have...so I have no idea?

Anyone have EFI live?


{C2901} MAF High Frequency Fail 1
{C2903} MAF High Frequency Fail Limit
{C2904} MAF Low Frequency Fail 1
{C2906} MAF Low Frequency Fail Limit
{C2907} MAF Test Min Engine Speed
{C2908} MAF Test Min Run Time
{C2909} MAF Test Min Batt Voltage
{C2910} MAF Test Max TPS
MAF Rationality test
The actual maf scale

Bad30th

iTrader: (13)

Can I ask why you are changing your MAF ?

IMHO you can make plenty of power with the stock screened one and you won't be fighting tuning issues.

...but since you already bought it - according to the diagram, the wires are exactly reversed on the connector. (A=E, E=A) Is that how you have them hooked up ? Any luck with getting a Hz output from the MAF on a scan tool yet ?

Rob (Bad30th)

Blown Interceptor

iTrader: (5)

I don't know, figured a few extra HP for not a lot of money.

It does not work period. I have the plug and play adapter from pace and nothing.


I put the stock MAF back on and did a little bit of logging. I know you showed me a while ago how to tune the maf...any chance for a refresher?


I tried to use the excel file in the stickies, but when I did the STFT an LTFT average. The whole column read #### all the way down?

Bad30th

iTrader: (13)

No more spreadsheets needed, you can make a MAF Hz vs. LTRIMs histogram now in HPT to see where it's off... Small changes to the MAF table make a big difference, start small and work your way up. Be sure to reset LTRIMs and do lots of driving after making changes, then do more scanning.

I'm on vacation and not around a computer much for the next couple of weeks but if I can help let me know... (Haha blind leading the blind).

Rob (Bad30th)

Blown Interceptor

iTrader: (5)

Sweet, I think you told me that a while ago, but I forgot. If you get this...can you walk me through on here how to set that histogram up? Or if anyone else knows? I just D/L the newest version of tuners, so hopefully that will be easier.

Thanks Rob!