Trying to figure the best option for my situation: car has to pass smog, so I was thinking of just getting a straight flange obx turboback that bolts up to my 15g, and welding a better muffler on there. I would remove the setup when it's time to smog, which is a pain. The other option would be to swap out the turbo for an angled flange, and a paired dp, with a smog passing muffler welded on. This wouldn't have to be removed. So my question is: how much better flowing would a straight flange obx turboback be when compared to a volvo angled flange with free flowing muffler? Think the trouble is worth it or is the difference small enough that the angled is worth it?
Thanks.
Thanks.