STILLEN Exhaust & Gen 3 Intake Dynos - 18hp Each!

Denny McLain

YO JOSH.

Lots of pre-market hype, I'm still here, so........ where is the intake that makes 18 hp over the stock intake?? I'd like to do an install and give you some independent dyno feedback that you're begging for.

Being the cats, Y-pipe and high flow filters were just sitting in my garage, pretty quiet on the private e-mails on when the intake was to arrive, lots of noise on the web, and no intake. Installed everything I have and will dyno this week giving independent feedback as to the results. And yes.....it's a whole lot louder. (Surprisingly much louder, but the stock cats are double cats, not single)

Got a bud whom does the racing chassis for LGM's race Vettes who is for sure is the best fabricator I personally know of (Maybe Lou G thinks the same) and he is going to look at the after Y-pipe exhaust to see if he can do some tweaks.( He did a dual 3" exhaust system for my Vette that produces identical dyno power to open headers)

The Immediate rear Y section is pretty whippy before it goes to the dual resonators, but as loud as it became, wonder if the factory maybe didn't wimp it purposely for next year gains? We'll see what he thinks.

Way I look at it. With additional CFM going out the exhaust, the intake with additional flow will only help more over stock. Right?

What say you? Or, are the gains a fuel/air trick?? Being the car dyno's pig rich, any tricks that lean it out will produce more hp, so will tuning software. CFM is.......CFM and lack of inhibits hp. More than you need, does nothing. Learned that the hard way adding a $650.00 1200 cfm TB over a 1,000 cfm TB. The gains were.....Zero on a 575 hp motor.

Removing the filters, keeping the top open for additional airflow produced.......nothing.