MAFT Gen 2 - Anyone?

[Drweldin]

Originally Posted by TurboBob

You can program either output on the LC1 to be whatever you want. But yes, they are preprogrammed as a narrow-band on #1 and a wideband on #2.

if the correction factor is 100% then the wideband tracking is not modifying the AFR.

Bob

Bob,
Drove the car yesterday for the first time....I have to say I'm very impressed with how well it runs /idles right out of the box!
Idle is really smooth, only setting the mainscale....tip in is a little noticable, but I richened 0-2500 in the mid / Hi areas by 1%, so we'll see what that does next time I drive it....
As far as tuning now, is there any advantage to tuning the MAF portion AND the RPM portion, or will I be ok tuning the RPM alone? The reason I ask is that I have no way to log MAF / load.....
Also, if "100%" disables AF tracking, what is the settingto "Enable" it?

Thanks!

[Andr3w]

I purchased this unit off 99modvr4 and just recently wired it up. I dont have a gm mas or larger injectors. I will be getting 450cc injectors very shortly. Glad to see that there is a thread that i can guide me through cause this is my first air fuel controller.



Andrew

[Drweldin]

Bob,
I am seeing a big difference in O2 voltage on the Gen 2 Vs. the Logger and LC-1 Logworks.....Logger and Logworks appears to be correct (2.5V) at 14.7 (closed loop) -- verified by NB also.....the Gen 2 is reading roughly 1/2 that, or 1.25V.......any ideas??
Thanks

[TurboBob]

Originally Posted by Drweldin

Bob,
I am seeing a big difference in O2 voltage on the Gen 2 Vs. the Logger and LC-1 Logworks.....Logger and Logworks appears to be correct (2.5V) at 14.7 (closed loop) -- verified by NB also.....the Gen 2 is reading roughly 1/2 that, or 1.25V.......any ideas??
Thanks

check the Gen-2 purple wire.

[Drweldin]

Originally Posted by TurboBob

check the Gen-2 purple wire.

Stupid question -- should the Gen 2 Purple wire and LC-1 Green wired be simply spliced together? Or should they be spliced together and grounded?

Thanks!

[Drweldin]

Are the purple and green grounded together, or just conncected with a male/female as shown in the Gen 2 wiring instructions? Reason I ask is that the LC-1 instructions show green to ground.....help?

[TurboBob]

Originally Posted by Drweldin

Are the purple and green grounded together, or just conncected with a male/female as shown in the Gen 2 wiring instructions? Reason I ask is that the LC-1 instructions show green to ground.....help?

I have mine set up the way the Gen-2 install sheet shows, it works correctly. According to the LC1 manual, this is the proper way to connect a 7-wire LC1.

Grounding the green LC1 wire and the purple Gen-2 wire (from the 10 pin harness, not the 4 pin) together with the main LC1 grounds has no issues, and should solve your issue.

Bob

[Drweldin]

Originally Posted by TurboBob

I have mine set up the way the Gen-2 install sheet shows, it works correctly. According to the LC1 manual, this is the proper way to connect a 7-wire LC1.

Grounding the green LC1 wire and the purple Gen-2 wire (from the 10 pin harness, not the 4 pin) together with the main LC1 grounds has no issues, and should solve your issue.

Bob

Thanks Sir - I'll give that a try...

Edit: That did the trick -

[Drweldin]

Bob,
Looking for suggestions on a very minor issue I noticed today....the car
seems to have what I can best describe as an "over-sharpness" off idle while taking off or driving at low speed/throttle.....seems more pronounced when cold.
Does this sound like a lo load tuning issue, or an afterstart enrichment issue?
Any suggestions appreciated!

Thanks,
Aaron

[TurboBob]

can you go into more detail about what "over-sharpness" is........?





Bob