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Retrofitting 200CPI cat cores to stock cats vs X-pipes

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YOUR RESEARCHRetrofitting 200CPI cat cores to stock cats vs X-pipes

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Replace original cat cores

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Suggestion · Original poster
Because of that, I'm considering to "gut" my cats and replace the original cat cores with 200CPI units in order to avoid the loss of hp and torque, but hopefully gain a few ponies while increasing the sound just a little bit.
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Retrofitting 200CPI cat cores to stock cats vs X-pipes

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Leading evidence: 'Replace original cat cores' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace original cat cores' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Test between the x51 headers and various other aftermarket headers

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Suggestion · Original poster
Someone posted results from a flow test between the x51 headers and various other aftermarket headers.
Original post Read captured discussion
Retrofitting 200CPI cat cores to stock cats vs X-pipes

Frequently discussed actions (2)

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Replace original cat cores

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

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Suggestion · Original poster
Because of that, I'm considering to "gut" my cats and replace the original cat cores with 200CPI units in order to avoid the loss of hp and torque, but hopefully gain a few ponies while increasing the sound just a little bit.
Original post Read captured discussion
Retrofitting 200CPI cat cores to stock cats vs X-pipes

Test between the x51 headers and various other aftermarket headers

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster
Someone posted results from a flow test between the x51 headers and various other aftermarket headers.
Original post Read captured discussion
Retrofitting 200CPI cat cores to stock cats vs X-pipes

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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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Generation: 20261027T084359Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So I've been reading up on X-pipes and their pros/cons. From what I gather, you will lose power and torque in the low-mid RPMs, but gain a fair bit in the higher RPMs. Because of that, I'm considering to "gut" my cats and replace the original cat cores with 200CPI units in order to avoid the loss of hp and torque, but hopefully gain a few ponies while increasing the sound just a little bit. I was first looking at these (they claim to boost your mid range), but about every article I've come across claim that you will lose hp/tq low down, despite what the manufacturers are claiming. Do you think I'll be better off welding in 200CPI cores in my original cat pipes? (it certainly is a heck of a lot cheaper than replacing them with brand new high flow cats w/pipes).

POST 2Original post

I was in two minds on whether to purchase a Cargraphic 200CEL X-pipe or their 200CEL cross-over pipes. They explained that the x-pipe helps to create a better sound note and better performance. I thought I did notice a very small loss down low but forgot about it quite quickly. Most manufactures have an x-pipe design.

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 15882815

I have sport mufflers from FVD, that's why I am currently looking at the FVD X-pipe to ensure the best match possible. Did you notice any gains in the highter RPM band?

POST 4Original post

Quotes source post: 15882846

Yes felt gains from mid onwards - all subjective though. Very happy with the sound and the feel of the power delivery though.

POST 5 / ORIGINAL POSTEROriginal post

Sweet! Although pricey, it sounds very tempting!

POST 6Original post

Definitely worth it! I'm going to do the headers soon which will give me a full cargraphic system. It's a slippery slope!

POST 7 / ORIGINAL POSTEROriginal post

Indeed, it is! The bolts on the header will more than likely be a PITA, but once you're done you'll probably drive around with an even bigger grin Someone posted results from a flow test between the x51 headers and various other aftermarket headers. As far as I can remember, the fabspeed headers flowed slightly better than the x51 ones, but only marginally. I'm sticking with my x51 headers for now.

POST 8Original post

If I had x51 headers I'd stick with them too.

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