Air Fuel Ratio

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Feb 28, 2006

#1

• Feb 28, 2006

• #1

I installed my lm1 today, but I did'nt install the rpm adapter yet. I was just reading some threads on air fuel ratio about how 13.5 is about the best for the most power. My question is that a full throttle at any rpm or at a certain rpm should you acheive that. I don't know alot about the tuning part yet, I am getting set up for my supercharger kit in about a couple of weeks and trying to learn how to use my tuning stuff. Thanks for the help

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Feb 28, 2006

#2

• Feb 28, 2006

• #2

For a n/a combo shoot for around 13.0:1 @ WOT and hard throttle. I tuned my car starting from a low 13 across and work its way down to a high 12 up top. I wanna be safe at 6,700 rpm

For a blower car i'd shoot for a mid 11.

 

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Feb 28, 2006

#3

• Feb 28, 2006

• #3

did you tune yours on a dyno or do you have a wideband?

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Feb 28, 2006

#4

• Feb 28, 2006

• #4

I tune on the street with a datalogging wideband. You'll get a better tune this way as the street puts a real load on the car vs a weak 4th gear chassis dyno pull.

Whatever you tune the engine to on a chassis dyno it WILL be leaner on the street.

 

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Feb 28, 2006

#5

• Feb 28, 2006

• #5

how do you have your rpm's hooked up? I have the rpm adapter but I don't have it hooked up yet. My msd 6al box has a 2 prong female lead off of it but I don't think that's the tach adapter. I don't really know how to hook it up. Any suggestions?

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Feb 28, 2006

#6

• Feb 28, 2006

• #6

The + side of the rpm converter goes to the tach port on the side of your msd. It should be a single male port. Then you run a ground from the - side of the rpm converter.

 

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Feb 28, 2006

#7

• Feb 28, 2006

• #7

Yea that's the thing I'm pretty positive my msd does'nt have the single male lead, it's a few years old, have they changed the msd lately?

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Feb 28, 2006

#8

• Feb 28, 2006

• #8

The 2 prong port you're talking about sounds like the chip rev limiter.

You should have the port. I know my friend had it on his 6al because I wired the tach up to it.

If you really don't have it, splice it to the - side of the ignition coil. Make a good splice though and heat shrink the connection.

 

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Mar 1, 2006

#9

• Mar 1, 2006

• #9

I think I found it, is it a male spade recessed into the box? Right beside this spade there is 6 inch lead that has the 2 prong plug i've been talking about. I just have'nt looked real good until now, the box is kinda hidden.

 

Grn92LX

Fidanza Man!

Founding Member

Jan 14, 2001

6,819

64

129

New York

Mar 1, 2006

#10

• Mar 1, 2006

• #10

You got it

 

Beasly B

New Member

Jan 7, 2006

165

0

0

Virginia

Mar 1, 2006

#11

• Mar 1, 2006

• #11

thanks for the help

 

8

86bluecobra

Advanced Member

Dec 20, 2004

4,265

12

69

B.C. Canada

Mar 3, 2006

#12

• Mar 3, 2006

• #12

i just got the same lm-1 kit and i have to get it installed. want my car tuned before drag race season. need more power.