Boduke0220
Well-Known Member
Rob while you're in there do ARP head studs. seen a few guys stretch the stock headbolts around 14-16psi
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Yes they have a lifetime warranty but i ain’t getting them replaced... lolSo Cats were made by AR?
Are you talking Kooks green Cats? Anything can fail but they those are well made an have very few failures.Take the cats off!!!! Y take the chance???.$2000 short block or a couple 100 bucks to take cats off ummm??? If you keep them on..... stay out of boost. Drive it like a old lady
I dropped my car off this morning to have a Magnaflow 12469 resonated muffler/X pipe put in place of the current X-pipe. I currently have 3 inch from the hollowed out cats all the way back ( cut out the 2.5 connection and had 3 inch pipes welded in). I chose this Magnaflow 12469 after receiving very positive reviews from other forum members. I'll report back this afternoon when pick the car up with how I made out.I may park my car until my Mak cat deletes come in after seeing this.
@Roh92cp I am with you 100% on not making the car too loud. I've spent more that what would be considered a sane amount of time looking for ways to mitigate the extra volume. If I had a 2.5" system I would have went with the magnaflow tru x resonator. All the clips and feedback I came across point to the fact that is would get the sound reasonably close to pre delete.
Since I have a 3" system and the 2.5 to 3.0 to 2.5 to 3.0 stuff makes me crazy I went with Magnaflow bullet resonators, and I am swapping out my MBRP mufflers with Magnaflow units as well.
I don't think that will be a net zero transaction but hopefully close enough.
Interested to see how this turns out . I got catless SP headers about to go on with my 3 inch magnaflow street catback . Worried I will to to loud and drone.I dropped my car off this morning to have a Magnaflow 12469 resonated muffler/X pipe put in place of the current X-pipe. I currently have 3 inch from the hollowed out cats all the way back ( cut out the 2.5 connection and had 3 inch pipes welded in). I chose this Magnaflow 12469 after receiving very positive reviews from other forum members. I'll report back this afternoon when pick the car up with how I made out.
As it sits, car is way too loud for a daily. Sounds great at idle, but anything above 3k RPM sounds shitty/raspy
the standard kooks high flow cats started fail within a few hundred miles on stock whipple tune 93 octane when plugs were gapped at .028Anyone have failures with stock cats and unmodified Whipple tune (with plugs properly gapped)? Removing cats isn't an option for some of us in states with strict emissions laws.
FWIW, I have 15k miles on my Whipple tune with stock cats. I don't see "several" members reporting failed cats in that thread. I see you, but you mentioned that plugs were not properly gapped, and one other member who was having hesitation and possibly misfire issues. The only reported cat failures in this thread were aftermarket cats and/or non-whipple tune. I would think a proper tune with cat protection could keep the cats alive. I also have not heard of any Roush tune cat failures with the same stock cats. I don't think it's fair to say that all boosted cars will eventually have issues with cats. This seems to be an aftermarket part quality and tuning issue.the standard kooks high flow cats started fail within a few hundred miles on stock whipple tune 93 octane when plugs were gapped at .028
stock cats were FUBAR after about 7,000ish miles but plugs weren't gapped correctly at that time
In the thread about the "whipple tune issues", several members reported stocks cats failing with the base whipple tune.
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I dropped my car off this morning to have a Magnaflow 12469 resonated muffler/X pipe put in place of the current X-pipe. I currently have 3 inch from the hollowed out cats all the way back ( cut out the 2.5 connection and had 3 inch pipes welded in). I chose this Magnaflow 12469 after receiving very positive reviews from other forum members. I'll report back this afternoon when pick the car up with how I made out.
As it sits, car is way too loud for a daily. Sounds great at idle, but anything above 3k RPM sounds shitty/raspy
You had me thinking I was crazy because I could have sworn I saw more more than 1 post in that thread where someone mentioned their stock cats failed on whipple tune. I went back through and found post #1 and post #294 were actually from the same individual who had 3 total cats fail on whipple tune. BTW, I was referring to more than 1 when I said several; not employing a ton.FWIW, I have 15k miles on my Whipple tune with stock cats. I don't see "several" members reporting failed cats in that thread. I see you, but you mentioned that plugs were not properly gapped, and one other member who was having hesitation and possibly misfire issues. The only reported cat failures in this thread were aftermarket cats and/or non-whipple tune. I would think a proper tune with cat protection could keep the cats alive. I also have not heard of any Roush tune cat failures with the same stock cats. I don't think it's fair to say that all boosted cars will eventually have issues with cats. This seems to be an aftermarket part quality and tuning issue.
I looked at doing the 12469, the only thing that kept me from pulling the trigger is that it's a dual Y verse a true X. Wasn't sure how it would flow.