carmudgeons.com - View Single Post - What the Mazda RX-8 should have been (new autocross car build)

John V · 02-23-2022, 09:58 AM

I've been working the car a bunch. I built an exhaust extension to add a muffler and move the tailpipe from a simple dump under the car to an exit at the rear bumper. Dumping the exhaust out the bottom of the car seems like a really bad idea when it will likely be shooting out some fire when the anti-lag is active.

My TIG skills are getting better, gradually. Throughout my winter projects I've spent about 20 hours welding, which seems crazy.

I did some street tuning on the car yesterday and the exhaust noise is almost nonexistent now. Not that I could really hear it over the gearbox.

I have not enabled the anti-lag yet. I probably should but I'm not sure how to tune it on the street - it really wants to be set up on a load-bearing dyno where you can stare at the laptop and see how turbo speed reacts to changes in fueling and airflow on throttle lifts. I can certainly go out on the road and get some logs, come back and make changes, etc, but it's tedious.

02-23-2022, 09:58 AM	#415
John V No more BMWs Join Date: Apr 2005 Carmudgeonly Ride: Ram, MS3, CX-5, RX-8 Location: Glenwood, MD Posts: 14,753	I've been working the car a bunch. I built an exhaust extension to add a muffler and move the tailpipe from a simple dump under the car to an exit at the rear bumper. Dumping the exhaust out the bottom of the car seems like a really bad idea when it will likely be shooting out some fire when the anti-lag is active. My TIG skills are getting better, gradually. Throughout my winter projects I've spent about 20 hours welding, which seems crazy. I did some street tuning on the car yesterday and the exhaust noise is almost nonexistent now. Not that I could really hear it over the gearbox. I have not enabled the anti-lag yet. I probably should but I'm not sure how to tune it on the street - it really wants to be set up on a load-bearing dyno where you can stare at the laptop and see how turbo speed reacts to changes in fueling and airflow on throttle lifts. I can certainly go out on the road and get some logs, come back and make changes, etc, but it's tedious.