Studdering at wot

[90fastgt]

I just got my 90 gt back together an I'm having a studdering problem at wot if I ease into it I can take it all the way to 6000rpms with no studder it will even let me do this if I take it 3/4 throttle it only happens at wot the car has gt40 heads trick flow intake e303 cam 42lb pound injectors with matching mass air an a 255lph my fuel pressure is set at 39psi my tps volts are good an my timing is at 14I degrees any ideas on what could cause this

[blown96cobra]

Did u replace the valve springs on the heads?? If you reused the stock ones you'll have problems.

[90fastgt]

Yeah they are the trick flow valve springs

[Evolved]

Possibly plug gap, may be putting out the spark.

[331lx]

Possibly plug gap, may be putting out the spark.

This was my guess also

[red srides]

to much fuel u will half to have tune to run those injectors

[90fastgt]

I pulled my plugs out today an they are white so I think it's running lean what do you guys think

[1987coupe]

check the mass air wireing and see if it is sending signal back to the computer i had the same issue with my coupe. good luck!

[Adam@S&MMotorsports]

Put a base tune on it then go from there...

[90fastgt]

My mass air wires have been lengthened so maybe one of them connections is loose Adam I was going to call you tommorow to see if you had any of the moates chips in because I need to get some miles on this thing before I bring it down an put it on rollers

[blown96cobra]

My mass air wires have been lengthened so maybe one of them connections is loose Adam I was going to call you tommorow to see if you had any of the moates chips in because I need to get some miles on this thing before I bring it down an put it on rollers

Start there at the maf and make sure all your connections are good. Then if all that checks out I'd get on the Dyno pretty soon.