runs great but misses at 4500?
03-16-2011, 11:04 PM
#1
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runs great but misses at 4500? My 1997 trans am runs great all the way untill 4500rpm then it feels like it misses. Just put new wires on,new opti rotor,icm, and coil no more than 3 weeks ago. And the opti was new last year sometime. Any suggestions
03-16-2011, 11:52 PM
#2
Well if you changed wires make sure you dont have one touching a header or manifold somewhere.
List your mods in your SIG or post them in this post. If you have headers or roller rockers you may be picking up false knock and need a tune or LT4 knock module.
Also, check your fuel pressure when running high rpms. You may be running out of gas. Take a pressure tester and tape it to your windshield and make a hard run with it and see what it does.
List your mods in your SIG or post them in this post. If you have headers or roller rockers you may be picking up false knock and need a tune or LT4 knock module.
Also, check your fuel pressure when running high rpms. You may be running out of gas. Take a pressure tester and tape it to your windshield and make a hard run with it and see what it does.