seems like you strive for the cheapest initial investment. nothing wrong with that. I have some suspension hacks.
but in this case, you'll have a tough time in resale down the road,.even if it works out. might be better to find a used name downpipe with a gesi or hjs cat ...if I don't see it first
If I wanted the cheapest option I would have gotten a $150 catless and thrown on an O2 spacer and called it good. I think you also missed the part where I paid for a full on MAP catted DP, but honestly it was because I found a one-off listing for a new one for $450 from a small seller that was like someone bought one then never installed it kind of deal, but I'm now doubting it will ever ship. I simply don't want to drop $800 on what is likely minimal gains for the money, so I'm just exploring a backup option. Even the used ones out there seem to be $500+ specialty brand stuff.
GESI is just a brand, they offer G-Sport non compliant (like cheaper option on MAP) and some expensive compliant ones (MAP upgrade option). Since I have no intention of spending $900 on a full compliant one, I figure there are some ways to think outside the box on this too.
Anyway, I now have already invested in a gasket, clamp, O2 spacer and exhaust reducer all just sitting here now, so yeah, would be nice to get something, heh. I messaged the seller of the MAP I found but I'm not very optimistic as it's been almost 10 days now since I bought it on eBay and he hasn't shipped it yet. I'm not worried about getting my money back, but disappointed I couldn't get a quality piece like that at a good deal. There is the ARM one I could get for $442 but not sure it has great reviews. But I think the bottom line is I'm willing to compromise on full compliance and find the best blend of quality, clean enough not to smell bad and pass with O2 spacer and value.
That's why I was now leaning towards Depo Racing and a cheap cat. I'd certainly keep the stock piece to return car to stock later and could resell the aftermarket super cheap if it's decent. It's not too difficult of an install on FWD, especially since I do have a power impact wrench.
I hope that all kind of makes sense. Thing is, if I did go this route, I may as well spend a little more on a better quality 300 cell cat than a cheap 400 cell since the O2 sensor with spacer would be above the cat anyway, so may as well get actual gains instead of choking off with a quasi compliant 400 cell. Now I'm just wondering how long the body of the cat would need to be to attach the 76mm to 60mm reducer to the ends of it and connect the stock exhaust and save the entire catless extender piece if/when I sell it later.