STILLEN 370Z Supercharger System - Announcement!!!

weiboy718

Stillensuper cat killer!







Just kidding hahaha!

Talking about cat's. My car exhaust smells so bad and funky in the morning start up's. Like it's super super rich so bad that i have to get out of the car till it warms up.

Phimosis

Agreed! Eyes watering rich.

Test pipes are not really an option for me. I live in the city with the worst air pollution in the US. I'm a professional and the city I live in is not that large, so I'm relatively high profile. All it takes is one angry person driving behind me with burning eyes from lack of cats to make a call to CHP and my supercharger fun is all over. The 10 hp loss is worth the 30x reduction in emissions.

Nixlimited

What's your plan, if any, come smog time? I live in CA and am really torn on going FI on a 370Z because of the hassle.

weiboy718

Solution is get a kit that is carb legal.

On a side note you probably won't have to smog till the year of 2012-2013 depending on the year of your car.

Nixlimited

Don't have a 370Z yet, but I thought there was 5-6 years on a new car. Had to sell my STi before I moved back to CA because of CARB and recently sold my M3. Currently torn between an Evo X and FI 370Z. I want a turbo car, but not sure if I want to deal with the hassle of a 370Z TT in CA and the S/C kits just don't excite me that much.

Phimosis

I don't keep cars that long, so it will be sold before it needs to be smogged. Hopefully by that time Stillen will have carb approval on their kit and I'll revert it back to the CARB kit specs before I sell it. As a side note, smog occurs at 6 years. from the Cal DMV website: "Vehicles that are six or less model-years old are abated from the biennial smog check inspection requirement."

About my tune: It is a "custom" tune. Stillen tuned it, but then that tune is probably being used as their canned tune for anyone who's running the 9 lb pulley, using 93 octane and has headers and cats. It's definitely different than their 91 octane, 8 lb pulley, stock exhaust tune.

toner123

Thank you for answering. So it is safe to say that yes your car was tunned by stillan but was custom tuned. I am trying to understand then why you are running rich. I though normally rich was a common thing to see on canned tunes because it is safer and less chance of error.
Frank

Phimosis

I don't have time to review it now, but my dyno graphs from early july in this thread show something like 10.2:1 to redline. That is rich. Rich mix gives quench effect, lowering cylinder temperatures and preventing pitting of pistons. Rich also is less likely to detonate because it takes more energy to light the mix.

On the flip side, with stock cats back on it, it's not eye watering from exhaust fumes anymore, even though the A/F ratio is the same. I've never owned hi-flow cats before, but now I 'get it'. Stock cats have like 2" diameter inlet/outlet and 10 pounds of catalyst material in them. The hi-flow cats have like 2 1/4" diameter with 2 pounds of catalyst in them. The "hi-flow" part is more that there's not really much catalyst in them rather than being a better design with less resistance, but same catalytic efficiency.

toner123

Hey phim are you also running stillens tune or are you custom tuned. Judging by what you said about being in cali and all i am assuming you have the stillen tune going for the carb legal.
Frank