Tuning Issues, I am out of ideas

Jeff Chambers · 01-31-2005, 12:57 PM

A speed density system is going to keep firing the 24# injectors for the same amount of time (injector pulsewidth). You could have someone like Autologic burn a chip that would compensate for the increased injector size, but SD just isn't that accomodating to overall changes. A guru like Mike Wesley might say otherwise, but for your basic layman its a tough system to tune with.

You could try lowering your fuel pressure to compensate for the 24# injectors, but don't go too low or you'll risk affecting the fuel atomization.

schwindty82 · 01-31-2005, 01:47 PM

Yeah I am installing my 19er back inside I figured out the Just of Speed density but I have to be able to move my car to go and get a custom chip soo I am in a rock and a hard spot I think I will try them out and see if it runns any better, hopefully it will clear somethings up

thanks for the advice

01-31-2005, 12:57 PM	#1
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Tuning Issues, I am out of ideas A speed density system is going to keep firing the 24# injectors for the same amount of time (injector pulsewidth). You could have someone like Autologic burn a chip that would compensate for the increased injector size, but SD just isn't that accomodating to overall changes. A guru like Mike Wesley might say otherwise, but for your basic layman its a tough system to tune with. You could try lowering your fuel pressure to compensate for the 24# injectors, but don't go too low or you'll risk affecting the fuel atomization. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

01-31-2005, 01:47 PM	#2
schwindty82 Registered Member Join Date: Jan 2005 Posts: 5	Re: Tuning Issues, I am out of ideas Yeah I am installing my 19er back inside I figured out the Just of Speed density but I have to be able to move my car to go and get a custom chip soo I am in a rock and a hard spot I think I will try them out and see if it runns any better, hopefully it will clear somethings up thanks for the advice __________________ Edelbrock Performer Heads and Intake, Fuel Pressure Reg, 1.7 Roller Rockers, 190 fuel pump, 24lb injectors, 3:73 gears, AC/Smog removal, Headers no cats into Ravin Mufflers, cold air, underdrives, Stock tranny and Cam.

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