Diablo fuel and air

[baylor2010]

With the diablo can I only adjust the fuel to air ratio at wide open throttle ............or wat else ......... any suggestions........i have a fuel to air meter

 

[ski]

Adjusting the A/F ratios has to be done on a dyno that's equipped with a wide band A/F monitor.

 

[JTGrant]

Adjusting the A/F ratios has to be done on a dyno that's equipped with a wide band A/F monitor.

A/F ratio DOES NOT have to be done on a dyno. If you have a wideband A/F system

with guage then you can drive around and tune that way. I have a non cated system

so I bought the Lm-1 from innovative motorsports and install the wideband o2 in the

exhuast bung on the h-pipe. Got the ratio to 12.4:1 at WOT (I had to add 4% fuel after

the installation of the exhaust system)(do to more scavenging) which is almost stoich for

best-power ratio for gasoline N/A. My criuse ratio was at 14.7 to 15.0 which is around

stoich for max efficiency and fuel economy.

 

[baylor2010]

jba longtubes with the catted h pipe will lean it out also wont it...............and if i keep my stock axle back how much louder will it be with longtubes and catted h pipe?

 

[ski]

Correct that from "has to be done on a dyno" to "has to be done with a load on the engine".

 

[JTGrant]

Correct that from "has to be done on a dyno" to "has to be done with a load on the engine".

there is a load on the engine when the car is being driven. Actually tunes that are setup by driving the car around are usually better.

 

[baylor2010]

jba longtubes with the catted h pipe will lean it out also wont it...............and if i keep my stock axle back how much louder will it be with longtubes and catted h pipe?

 

[ski]

there is a load on the engine when the car is being driven.

Exactly. Running the car either on a dyno, or on the street puts a load on the engine.