2h fuel tuning with AFR gauge

[coldtaco]

So, I installed a Innovative Motorsports MTX-L air/fuel ratio gauge. Now what? How does one tune a 2h with this unit? Is this done by rotating fuel pump and/or adjusting the max fuel screw (?) at the end of the fuel pump? Right now it reads 22.2 and the needle is maxed out red to the right of scale. Thanks.

 

[Tapage]

rotating the pump you mean playing with timing ...?

 

[coldtaco]

rotating the pump you mean playing with timing ...?

I have by now figured out that rotating the pump will not do anything to adjust the AFR. I guess only adjusting the wide open throttle thing is probably the only way to adjust AFR?

 

[Dougal]

You'll need to plug the guage into a computer and reset the range. You want the range reading up to 99:1 for diesel.

Otherwise it'll only read when you're at full load.

 

[coldtaco]

You'll need to plug the guage into a computer and reset the range. You want the range reading up to 99:1 for diesel.

Otherwise it'll only read when you're at full load.

Will try that thanks.