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Aren't you running the BC Forged? Any reason for recommending the Super Forged?

Is the impregnated cloth secured by tiny rivets? Or are those some other type of fastener? I've seen some fiberglass work before, but nothing like that! I would have expected hand shaped foam so that's not a technique I've seen before. In any case, impressive work and very labor intensive!

Let me rephrase this- The only impact on fuel mileage due to a CAI would be something that restricted airflow which would increase pumping losses. In other words, the amount of extra energy it would take to draw air into the combustion chamber during the intake event.

I hate to say something obvious, but a CAI has nothing to do with your gas mileage. The ST uses wide-band O2 sensors to ensure air/fuel ratios at all times. Now, if you had an extremely dirty air filter or you kinked an intake hose during installation there might be slight losses of fuel...

Looks like a new intercooler on the market- that's not a Whipple.

Call me crazy, but spending $6k on "insurance" before you even have a problem seems a bit extreme, especially with a 5yr 60k warranty. Used 4x4 10R80s are available at around $2k. I'd research that option first. Internal gearing might be slightly different, but your transfer case and...

The factory cats aren't the same as those on cars from 20-30 years ago. They are not that restrictive. Second, the pressure between the exhaust valves and the turbine is WAY higher than after the turbines. Third, are you road racing? How much actual time are you spending at max boost at 5000+...

The problem with old cats is the fur gets stuck everywhere, which limits hp performance.

For ethanol, you have to interpolate the required fuel flow from gasoline to ethanol. IIRC pure ethanol is 9:1 A/F ratio. I mean if you're that concerned, get a stopwatch, a gallon bucket, and connect a fuel hose to the fuel line. Start the stopwatch, trigger the fuel pump, and measure how...

The answer from that website doesn't really give any real information as to how they ascertained that number. The flow through a pipe depends on the internal diameter of the pipe and the velocity of the fluid. Just for grins, we'll assume your 500hp figure. That would require approximately 50...

It wasn't refuted because it was silly, and I didn't think anyone would take it seriously, nor am I going to argue across the internet with someone who has no idea. Do you know of anyone in the world, even in the racing world running no exhaust on their turbine housing? I guess they're all...

Poster mentioned wheel spin- that would certainly affect the 0-60s.

Dual 2.25 pipe can flow that. Certainly the stock muffler components would reduce that somewhat. But if you're at 520, that's probably 580 or so crank, so you're pushing 600 with stock components. Check out my exhaust thread...

I think you are way ahead of the game in terms of hp. So, if you want more, you really need to think about your goals and your budget! You could spend $2800 on downpipes and exhaust for another 25 or so HP. After that you're talking about turbos, and that's where it gets interesting. It's my...

I have covered this in various exhaust threads on this site. A dual 2.25 exhaust has more flow area than a single 3" exhaust. You can find scores of turbocharged vehicle dynos on the internet with a single 3" exhaust making 700+hp. Flow requirements are different between N/A and supercharged...

CR Performance also has upgraded turbos for the ST.

Just to jog the memory!: https://www.explorerst.org/threads/explorer-st-wheel-size-bolt-pattern-offset-tire-information.188/post-27206 Before run flats and other things (no idea when you ran the personal best). In any case, for OP, you should be in same range.

If your dynos are correct at 520, you should be in the same range. Another ST dynoed at 504 was at 11.89. Unbroken (I'm sure he'll be happy to detail it) has some pretty significant savings in wheel and brake weight.

Keep this in mind- there have been several postings of owners on this forum with supporting dyno charts making over 500 (wheel hp!) with stock downpipes AND stock exhaust. In one case, 540 WHP. So unless you really want to make more HP than that (and that won't be a 93 tune, you'd have to go...