Ive got to get my car through emissions by the end of this month. Ive got a brand new 3" Bonez highflow waiting to be installed and a brand new GM Electric airpump partially installed. I actually cant wait to be able to breath while stuck in traffic, and my cloths smelling like road is a bit immature.

Car has an RB RevII turbo back system, and I'm almost ready to swap out the prescilencer for the cat. Car also has been premixing with 8oz per tank, fuel delivery controlled by a Haltech. Engine has some kind of street porting, not ssure of specifics but its probably a mild street port. Running four trailing plugs if that matters I dont know.

I have the car tuned via e6k with PLXM300 WB for about 15:1 afr without the airpump at 25 and 35 mph in 2nd and 3rd gear, which is what the emissions shop pulls the test at. After the airpump gets installed I've got no clue how things will end up. Should I be able to pass? Should I lessen my premix ammount on that day to say like 2oz?

What can I expect as far as powerloss from a Bonez highflow in case I want to keep it installed? My car runs 15psi on a built up to4b and currently pushes about 350rwhp, plus or minus. This car was built by JacobCartmil.

What about longevity of the Bonez cat? Will it last 5,000 miles? With or without airpump?

Will it cause my engine to blow from the increased backpressure?

Thanks

 

four?... That engine has three spark plugs per iron?... Why?

 

Im running cold plugs in all 4 holes. Trailing plugs are colder than leading. 15psi of boost on pump gas will do that to ya.

 

lax-rotor.....wtf does that have to do with anything? 3 per iron? I'm confused, and for no good reason.

anyway......

Man, lord only knows if you'll pass with a streetport turbo 7 while premixing. Hopefully your cat and your lean tune on your E6K will do you some good. Good luck!