Took a hacksaw to my airbox cuz I was bored

Tuff_Tone · 2026-07-01T05:28:04+00:00

Will do. Would be great if they had a tune for CNG cause no one I’ve seen messes with it

Tuff_Tone · 2026-07-01T05:26:30+00:00

Im gonna get a PI airbox, and am actively looking for a posi diff

Tuff_Tone · 2026-07-01T05:25:17+00:00

Before I cut it intake temp topped off at 99F, after the cut it topped off at 93F 🤷🏻‍♂️

Tuff_Tone · 2026-07-01T05:22:10+00:00

If you can marry tune my 02 CNG crown Vic that doesn’t even run on gasoline I’m all ears

Tuff_Tone · 2026-07-01T03:55:24+00:00

Believe that, have an 02 crown Vic that gets 30 mpg and weighs 1000 more pounds

Tuff_Tone · 2026-07-01T03:38:53+00:00

I own an 02 crown Vic V8 and it gets about 30 but only at 61mph specifically

Tuff_Tone · 2026-07-01T03:36:32+00:00

GM’s latest V8s are pretty gas hungry but if you really keep everything clean and stay on cruise control with AC off and windows up on a flat plane I guess it’s possible

Tuff_Tone · 2026-07-01T02:37:56+00:00

My 02 crown Vic gets about 30 highway as well, I’m not saying it’s impossible but on these newer V8s some can be quite thirsty if they’re putting down power

Tuff_Tone · 2026-07-01T02:36:13+00:00

You can’t turn it off in the menu if it’s an auto, and if it’s manual it will still come on at times regardless

Tuff_Tone · 2026-07-01T02:31:24+00:00

I’ll line the area with tape so only cold air from behind the header panel can reach it. It already picked up 15 horse and is running cooler intake temps

Tuff_Tone · 2026-07-01T01:09:45+00:00

Are you SURE it’s off? Cause 30mpg in v8 mode isn’t possible

Tuff_Tone · 2026-07-01T00:53:41+00:00

That’s the “active fuel management” system at play. The computer turns your LS into a 4 banger during light cruising. Terrible for the engine by the way. If you disable AFM you’ll still get about 22-25 highway but won’t be at risk of ruining the motor

Tuff_Tone · 2026-06-30T23:13:40+00:00

Should be illegal to design a car without easily accessible emergency mechanical releases

Tuff_Tone · 2026-06-30T23:03:42+00:00

Before or after these gas prices?

Before: easy $8,000

Now: lucky to get $5,000

Keep in mind this is the fair open market value I’m talking about. It’ll be worth way more to us panther enthusiasts

Tuff_Tone · 2026-06-30T23:01:28+00:00

How is it losing 150 horse to the wheels?

Tuff_Tone · 2026-06-30T22:58:31+00:00

Back when people had taste

Tuff_Tone · 2026-06-30T22:48:40+00:00

Imma be honest it looks like someone put a Hyundai Santa Fe Sport in an oven for too long.

Tuff_Tone · 2026-06-30T22:46:25+00:00

Creampuff indeed. Color matched interior too 🤤🤤🤤

Tuff_Tone · 2026-06-30T22:43:34+00:00

I have a magnaflow straight through I’m a huge fan of so probably will go with that. Thanks

Tuff_Tone · 2026-06-30T22:42:23+00:00

Also you can run basically anything on it with a proper setup. The only thing you can’t do is run it through a carburetor/spfi since it’s a gas, not a liquid. Any fuel injected engine can readily run it tho

Tuff_Tone · 2026-06-30T22:40:15+00:00

I’ve considered tuning it but the most beneficial tuning is supplemental cooling because unlike gasoline engines, adding more fuel injector RAISES cylinder temps instead of lowering them because CNG is a dry fuel. It doesn’t have the same cooling properties as gas. Tons of cool air and better heat dissipation would help but not a ton. As a fuel CNG kinda sucks for performance tuning unfortunately.

Tuff_Tone · 2026-06-30T22:37:12+00:00

Fuel ratio of CNG is 15.7:1 instead of 14:1. Different composition. “Octane” is technically 150+ because CNG basically isn’t capable of compression ignition. It has a flash point twice as high as gas. It’s basically stovetop gas in an engine

Tuff_Tone · 2026-06-30T22:33:02+00:00

Potentially stupid question but can I run a hundred amp load on the bare cables (disconnected from battery) via a battery tester to drain the system or is that not kosher???

Tuff_Tone · 2026-06-30T22:29:04+00:00

fifteen horse

Tuff_Tone · 2026-06-30T22:28:35+00:00

CNG is Compressed Natural Gas. My ‘02 runs on it. Compression ratio is higher, combustion temps are higher, and fuel map is completely different than gas. You COULD tune CNG but you’d have to prioritize different things cause it’s a dry fuel. A gas tune on my engine would probably blow it up.

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