I’m in on the Over/under for when you are stage 2 with all the bolt ons and realize you want more turbo, lol.
Then that extra 1” will matter.
That arm DP uses a cat of quality you can get for 60 bucks...the cat offered with the trackslag is an expensive item to them before any mark up already.
True.. But for my build I don't feel like pushing my AQ250/09G tranny with anything bigger than an IS20. There are Slush box IS20 builds trucking along here I can reference, anything bigger seems like I'm setting myself up to grenade something...
Eh, the ARM Catted DP was $447, plus they have an 11% off coupon going right now with free shipping. So about 400 for the DP. Most others going for 800 bucks use 200 cells too.. They all claim to use higher class SS CATs with higher metal density, so it's hard to know who to trust.
Figure for 400 bucks, if it smells bad I can probably pick up a decent 300/400 Cell cat and have it welded in for cheaper than the cheapest 300 cell OTS DP I found at 800ish.
Edit: 300 cell GESI with 3" in/out and 4" diameter for $140. It's not an EPA rated one, but you can find those for around 330ish in the 400 cell range.
https://www.importimageracing.com/p...n-diameter-body-x-7in-oal-catalytic-converter