We have not really considered the impeller upgrade as it would no longer be a simple bolt on upgrade for the current STILLEN Kit. We like to make products that will be safe, reliable, and are pretty straight forward. If we feel there is enough of a demand for a more extreme (call it stage 3 or 4) upgrade with a different compressor wheel and completely different fuel system we will look into it.
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Originally Posted by gussyturbo z
You think I should go back with HFC? i do have a 3" a am exhaust. I don't know what to do!!
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You should go back to stock cats if you are running the STILLEN Kit. I would highly recommend stock cats. High flow cats are more likely to blow out and you will still only make a little more power over test pipes. Stock cats will get you the best power.
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Originally Posted by ANMVQ
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Thanks Mike! I will be going over this with our tuner and engineer.