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-   -   Dyno problems (http://forums.mustangworks.com/showthread.php?t=30706)

saltzstang 10-31-2002 03:40 PM

Dyno problems
 
While dynoing my car this last weekend the air fuel ratio went to 17:1 as soon as we shot 150-hp at 3500 rpm . The dyno operator shut everything down in enough time that no engine damage occured. I have a walboro 190-lph in tank pump with factory lines, new fuel filter(high flow), and a kirban adj. fuel reg set to 40 psi ,24 pound inj.. Everything ran fine on 80 hp shot. On motor made 260 at the wheels on a mustang dynometer . The n2o kit is made by nitrous works and is obviously a wet kit. Im pretty sure the kit robbed the fuel pressure from the motor. So with all that said has anyone experimented with adding an in-line pump after the in-tank pump to boost flow/pressure available at the regulator.

RPM427 11-01-2002 12:21 AM

Are you sure you jetted the fuel correctly when you changed to the 150 setting? What was the FP doing when you hit the nitrous? It is a possibility that you may need to jet the fuel up to reach the required level of enrichment.

saltzstang 11-01-2002 11:42 AM

yes ,jetted correctly/fp@40psi, think my walboro pump(190) not enough,may try 255 holleywhat ya think?

RPM427 11-01-2002 07:07 PM

the 255 should be plenty, Thats what i am running with a 125 Zex kit


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