Supercharged issues

[ozzman306]

I'm having problems with my mustang ever since I installed my vortech kit. car drive idles fine but when I give it a hard acceleration it bucks at 1/4 to 1/2 throttle I've never done wot since the car fall on it's face... my set up is 306ci probe forged Pistons ,stock rods with ARP bolts ,gt40x heads 64cc ,crane 1.7 RR
, 93 stock cobra cam , edelbrock intake ,
65mm T/B , 73c&l maf , 24lbs injectors
(match to the maf) 12:1 FMU , 255 pump , and also running the vortech boost a pump so I have plenty of fuel and it's a 8-10psi kit


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[UncleSAm]

Who tuned it?

 

[ozzman306]

Who tuned it?

The car is not tuned it's running off a FMU .. fuel pressure is set right and timing is also set as well I don't understand why its bucking my 95 mustang GT has no issues with the FMU


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[ozzman306]

The car is not tuned it's running off a FMU .. fuel pressure is set right and timing is also set as well I don't understand why its bucking my 95 mustang GT has no issues with the FMU


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this is my set up



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[RRRCobraSC281]

What spark plugs are you using? Ar they gapped short? Can't remember off hand what it need to be but I thought it needed to be somewhere in the .030". I believe Vortech specifies using standard champion plugs. No platinum plugs, and to shorten the gap.

 

[ozzman306]

What spark plugs are you using? Ar they gapped short? Can't remember off hand what it need to be but I thought it needed to be somewhere in the .030". I believe Vortech specifies using standard champion plugs. No platinum plugs, and to shorten the gap.

I have to look into that I have them gapped at 0.34 I believe that's what vortech recommends but I might have to check if they are platinums or not thanks for the tip!!!


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[ozzman306]

I have to look into that I have them gapped at 0.34 I believe that's what vortech recommends but I might have to check if they are platinums or not thanks for the tip!!!


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The plugs are platinums I removed them yesterday I will buy a new set and see if that fixes my problem


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[RRRCobraSC281]

Any updates?


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[ozzman306]

Any updates?


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Yeah I did plugs but no luck :-(


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[ozzman306]

Any updates?


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Update..... my fuel lines on my FMU were backwards I added a fuel pressure gauge and noticed that my fuel pressure was going down under hard acceleration so I swapped them and it fixed my problem


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