Big stuff help

[Brad T]

Is the pct-dc on the dash reading the injector duty %?

We have 100 in the ve cells the ro2-cor reads +25 but the pct-dc is showing 49.

 

[Brad T]

I just noticed the Lo2 cor is -100.We only have one O2 is this pulling fuel out? If so is there a way to turn it off ?

 

[S2V6RACER]

Is the pct-dc on the dash reading the injector duty %?

We have 100 in the ve cells the ro2-cor reads +25 but the pct-dc is showing 49.

There is no way you should have 100 in the VE cell and adding 25% fuel.

Something isn't right. Fuel delivery problem?

The L 02 isn't used also unless you have dual widebands.

The pct -dc is your injector duty cycle.

 

[Brad T]

Is 100 in the cell going to give 100 duty cycle or do you have to put in bigger numbers to get full flow.

This is a friends big block dragster running on alky. Know anyone running something like this?

 

[Dusty Bradford]

100 in the VE won't necessarily give 100% duty cycle. You need to log duty cycle so you can read it.

100 isn't all that high for a blown application. I've seen a few that need 114 to 120 in high gear.

What kind of power does it make or at least what is the blower size and engine details? What size injectors?

 

[Brad T]

No power adder just a Big block Chevy Brodix heads big cam 13-1 160# injectors running Methanol.

With his old Kinsler injector and a smaller cam it made just under 1000hp.He made an 1/8 pass and it was lean.A/F was 12 the ve cells were set at 100 we had +25 o2 correction but the duty cycle reads 49.

Did go 5.18 @ 142

Someone told him the a/f should be 3.5 to 4.0 does that sound right?

 

[HighPSI]

No power adder just a Big block Chevy Brodix heads big cam 13-1 160# injectors running Methanol.

Someone told him the a/f should be 3.5 to 4.0 does that sound right?

I would run it a little leaner if it's N/A 3.5 to 4.0 is what we run on turbo BB's

 

[Brad T]

Thanks for the help guys.