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1999 Pontiac bonneville ssei 3.8 3800 supercharged stutter under WOT

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Hi Scotty, I'm having a really bad issue with stuttering on acceleration on my car. I have 0 codes and I bought the car used. I have replaced the wires, plugs, coils, fuel filter. The issue started when I gave it WOT and it started bucking and stuttering. Car runs and drives fine but when anything over half throttle is given it starts to stutter then the whole car starts to buck as it climbs in rpms. I checked my coils they are fine my plugs and wires are also fine (all aftermarket ZZPERFOMANCE parts) any help would be appreciated because I am at a loss thank you!

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still the obvious things like spark plugs air filter fuel filters and pressure test the fuel pump then probably it's not the supercharger going out but it often is on those things when they're that old

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