98 cobra sc wont rev past 4k rpm!!!!!

jorgegt500

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Sep 6, 2012
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sacremento
Still haven't found my answer as I'm driving the cobra and I punch it it won't rev more than 4k unless I ease of the gas and tap slithly then it will rev a little higher what's going with my cobra anyone???? Mods are

-msd wires
-ngk plusgs Gapped at .25
- Vortech v1 6psi
- 255 bbk
-42pound injectors
-force fed performamce tune

It had a miss fire at idle I fixed that by putting stock coils back on but when I'm driving womt rev up past 4k without easing of the gas .
 

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