I don't understand it. The car hauls like a beast below 4,000K but above it just dies. Any ideas? My mods are below in my sig. The K/N Filter is clean.
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Terrible Hesitation at High-End
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check plugs/wires/coils, and fuel filter, and also have you bottomed out lately? could be your catalytic converter breaking apart, i had one fall apart on me and i lose all high end power
check those things first though as they are usually a sourceR.I.P \'99 Firebird, you will be missed<p>New toy - 2001 GSXR-750, Yoshimura Exhaust, Power Commander, Rebuilt Airbox
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What kind of a problem, exactly, did the cat cause? I have a bad misfire problem right now, mainly during accleration or otherwise when under a load. It pops and stutters and hesitates, but it has only thrown a code once, and it shook the whole car when it finally did that. The coils are good, fuel pressure is rock solid, I have brand new plug wires on, and the problem gets better, then worse, then better, etc. I'm going to see if the stock coils from my old 3.4 are the same as the ones on this one (anybody know?). If they are, I'm going to use one, and put it on each cylinder pair, just to be sure. Otherwise, I'm suspecting the Ignition Control Module as the most likely culprit.
Any thoughts????? Thanks.Wife and a dog, they both think they\'re Kujo.<br /> <br />1999 3.8 A4 Y87<br />Navy Blue Metallic<br />BFG G-Force KDWS 275/40/17s, <br />WS6 Wheels (17x9)<br />Phoenix Transmissions 2400 Stall Converter<br />FRA, Holley Powershot filter, Whisper Lid, Ported Throttlebody<br />2000 manifolds, Flowmaster, WS6 Tail Pipes, <br />MSD 8.5mm Wires, MSD Coils, Autolite plugs<br />Performance Cryogenics treated rotors<br />1LE Sway Bars and panhard rod, 1LE front springs w/SLP Bilsteins, stock rear springs w/ 3rd Gen Bilsteins, BMR STB, KBDD SFCs, 1LE rear lower control arms, 1LE front lower control arms<p>1968 Chevelle Malibu 327 TH350
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