I installed my new manifolds yesterday. I didn't even start the car until today to let the locktite set up. So this afternoon I hopped in the car and drove off to the dyno. A few moments of heavy footedness but mostly just getting to where I was going. The results took me by surprise. I was expecting a lot more hp but what I got was torque. 19 ft. lbs. more from 3000 rpm to redline. The horsepower was 13 more from 3000 rpm to redline. The mixture leaned out from .3 to .4 from 3500 rpm to 4500 rpm and then again from 5500 rpm to redline. I was running rich from before so I still feel comfortable running without a revised tune for now. I plan on getting one soon anyway, just not urgently.

The numbers are: 352 hp and 338 tq. The dyno is a Mustang dyno. Temperature was 82º and the shop is at 200 ft. above sea level.

Les