Hey Anybody using a downpipe with integrated CAT in California? Any trouble passing smog?
Can you boost as high with your hi-flow cat in place as you could with your stillen?1/4mile in style said:I have the random cat and dp also. it doesnt quite compare to my full dp from stillen, but you can definitely tell the difference between factory and random. It spools alot faster and I can easily spin my tires in 1st, 2nd and 3rd when the second turbo comes online...but that may be do to bald tires I havent smogged with it but if this means anything, before with my stillen dp i would trigger the MIL all the time getting a check engine light, but with the random tech dp i never trigger the MIL. Alsom the smell from using the straight dp is gone...