GT & Cobra Stock Maf Curve Comparo

I get asked about and see a good amount of threads asking about the GT & Cobra maf differences. I'm sure you have seen them as well with Q's like:

If one maf is caled for such & such ......
If one pcm does the cal for the maf then why ......
The list of Q's could go on .......

Here is a difference you may not have thought about.

A good while back, I ran the stock maf on my current sig combo. To make it work, I had to get a bit creative so I got pretty familiar with the curve from both mafs.

I've always known, in a round about way, the two curves were close. Especially in the Closed Loop portion of the curve.

I also knew the GT had a bit more breathing room up top over the Cobra.

I decided to throw both curves in Excell and see the differences.

I had no idea they were this close

See for yourself

Grady

Look again at the high end

The GT will read about 50 kg/hr more air flow.

Pretty close but, it saved my bacon for a while until I could move up

Grady

Black95GTS said:

GT has more air flow, yet the cobra has more fuel delivery. I guess we just figured out why GT's ping like there is no tomorrow.

adam

Click to expand...

Now that you mention it

Looks like the word is getting around

Grady