We did get the new exhaust system built for the next event at Laguna Seca. This visit I was able to run at full song! Unlimited sound events are VERY rare here and the POC got an invite to run with the Pirelli Cup Series during their race weekend. We had our own race group, and had a handful of 3.6L to 4.0L cup cars doing battle and even the new World Challenge Series Audi R8's. With the power boost from the exhaust, and lack of entries in my GT3 class (9lb per HP) I decided to remove all the lead and run in GT2(7lb per HP). Was still 300lb overweight for the class but would be able to battle.
First, the headers.
Built by Lucas Fab, made of 304 stainless. Stepped diameter, equal length, long tube primaries merged to 2.5" straight pipes that are merged before exit. We were able to jump from our previously unrestricted 315rwhp to 340rwhp!
Wow very impressive hanging with the big boys! Nice strong finish!
What size primary pipe on the headers?
The primaries start at 1 7/8'' and step to 2''. A little large for the current motor but I have another one in the works A 3.8L that may end up closer to 4.0L...
Also, I don't worry much about low end torque because the car never gets below 5800rpm or so with the short gears.
Mean Motor Scooter
A 3.8L that may end up closer to 4.0L... 
Hybrid Mode
