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Whipple questions: warranty claims, stage 1/2

JohnNathan

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Catless. So do the two of you live where there is no emissions testing?

Wouldn't this cause a check engine light warning on the dashboard? If so, did you just drive around with a check engine light on?
Not if u have any questions
Catless. So do the two of you live where there is no emissions testing?

Wouldn't this cause a check engine light warning on the dashboard? If so, did you just drive around with a check engine light on?
I put these on it. Keeps the check engine light off.


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Q6543

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Yes, we don’t have emissions., autozone sells the defouler

If I lived in an emissions state I’d either leave it stock or buy a plaid or something else.

Boost and cats should not coexist and I’ve seen as many if not more aftermarket “high flow” cats collapse and fail as well.

Maybe they’re ok if your dinking around with 8-10 psi.. I still don’t trust them.
 

Junkyard Dog

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Thanks, guys. I live in an area with annual emissions testing, and the tester is additionally required to look under the car with a mirror and visually verify the existence of catalytic converters.

Any check engine light is an automatic fail on the test, meaning you cannot register your car.
 

broncoboy22

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Could be just that vendors pricing. I remember them being under $10k. But like you said they only made 100 so who knows.

Screenshot 2025-08-08 at 8.07.05 AM.png
Yup, there’s no functional difference between the two. Just different decorations on the lid. Save the $2k and get a regular roush blower
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