Quote:
Originally Posted by christianb5s4
I just wish there was more actual data available on the performance differences between stock, 400cell downpipes, and 200cell (not including CEL and catless).
Reason being if one were to go through the process of installing downpipes, what actually is the best ROI for power and sound excluding cost? Wouldn't want to go through the expense of 400cell if the gains were relatively minimal compared to stock versus a 200cell option.
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Quote:
Originally Posted by docjavier
I want to know this too.
What about leaving the stock DP and getting a JB4 instead? I have a resonated MP and Axel back already. Can't do the unlock yet.
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Active uses GESI cats, they are rated at 850 whp.
there is plenty of data on GESI cats, you can also check out their website (GESI) for more info on their products.