Yacoucci's exhaust

[V8Pinto]

Does anybody know anything about the exhaust Yacoucci ran on his Busa when he set the production record?

I spoke to him briefly at El Mirage last year but didn't want to barrage him with detailed questions (I had about 100 of them hahhaahaha).

I've been sitting here staring at this stock exhaust trying to figure out how 200MPH fits through there....

 

[Got-Busa?]

My guess is with enough engine mods, the stock exhaust can be modded to work. It won't make as much power as after market but just enough to set some records when you go in the engine...

 

[SGVridgerunner]

I've seen a thread on here before about gutting the exhaust and still being legal for P-P. The person ran a straight pipe the size of the inlet diameter through the can and then cut the exit plate (the small one) to flow better and buttoned it all up. Once you get the exit diameter issue taken care of, you could tune the piping diameter and shape to match the engine revs making peak power to amplify the power output.