96 missing up top.

[rustyruststang8]

my 96 cobra is missing at 5k-6k rpm in 1st and 2nd gear for sure. i am going to pull plugs tomarrow and check that. plus i am gonig to see if my check engine light has any other code other then cat ineffective (no cats). any other ideas if those 2 things check out ok? any thing i can test?
the cars mods are off road h pipe, shifter, kann, and flowmasters

 

[Ducci]

my 96 cobra is missing at 5k-6k rpm in 1st and 2nd gear for sure. i am going to pull plugs tomarrow and check that. plus i am gonig to see if my check engine light has any other code other then cat ineffective (no cats). any other ideas if those 2 things check out ok? any thing i can test?
the cars mods are off road h pipe, shifter, kann, and flowmasters

Funny. I'm having the exact same issues. With the same mods (mac prochamber, k and n, sct tuner, and flowmaster american thunder cat back). Happens around 5500 rpms. Let me know what you find out.

 

[rustyruststang8]

ended up being spark plug gap. i they where gaped at .45 i took them down to .35 all is good now.

 

[Ducci]

Guess I know what I'm doing this weekend.

Appreciate the update.