Before You Buy Morimoto Headlights or Delete Your Muffler: A 7-Step Checklist From a Parts Installer

I run install orders for aftermarket lighting and exhaust components, and I've been at it for 7 years. In that time, I've personally made (and documented) 13 significant mistakes across lighting and exhaust upgrades — totaling roughly $4,700 in wasted budget. In my first year (2017), I made the classic "just order the part" mistake with a set of Morimoto V2 headlights for a RAM 1500. The listing said they fit. They didn't. That error cost me $940 and three weeks of return shipping, restocking fees, and embarrassment. Now I maintain our shop's pre-install checklist so nobody on my team repeats what I did.

This checklist is for you if:

• You're shopping for RAM Morimoto headlights and aren't sure which generation fits your truck.
• You've heard the Purple Hornies muffler sound and now the checkout button is calling your name.
• You own a Honda Fit and wonder whether an exhaust system is worth it — or just a waste of weekend time.
• You keep asking, "are muffler deletes illegal?" and can't get a straight answer.

Seven steps. Twenty-five minutes. Run through this once, and you'll save most of the money I burned — which was most of the $4,700.

Step 1: Verify Fitment With Your VIN — Not With the Listing

The RAM 1500 is a classic trap because the body style changed in 2019. Morimoto V2 headlights for the 2013–2018 generation use different mounting brackets than the 2019+ trucks. A parts listing that says "fits RAM 1500" is technically true and almost useless at the same time.

The rule: run your VIN through the manufacturer's fitment tool. Morimoto's website has one, and it takes about 30 seconds. Then pull the installation manual before you buy — check which harness connector is required for your trim level. "Plug and play" is a hope, not a specification.

Step 2: Check the Headlight Laws Before You Spend Money

People assume that if a headlight is sold in the US, it's legal for street use. That's not how it works. FMVSS 108 sets the federal standard for beam pattern and brightness, and enforcement usually falls on the driver, not the seller.

From the outside, aftermarket LED projectors look like a clear upgrade. The reality is some budget units have poor beam cutoff and scatter light directly into oncoming lanes. I've had customers show up at the shop with citations before they even installed their new headlights. The Morimoto V2 tends to perform well because the optics are properly designed, but "tends to" isn't "guaranteed for your state." Verify the rules where you live, and always check the beam alignment after installation.

Step 3: The Purple Hornies Sound Clip Problem

The Purple Hornies muffler sound is basically internet catnip. I've watched the clips. They're aggressive, deep, and genuinely appealing — if you're into that. And I've ordered one for a fleet truck based on a clip that turned out to be recorded on a modified V8 with headers and a tuned exhaust. On a stock engine, it sounded… not like the clip.

Here's something vendors won't tell you: sound clips are recorded on the best possible setup, not the average one. If you can't find a clip of the same product on your exact engine, assume the result is unknown. The surprise wasn't that the muffler sounded bad — it was that the difference between a video and reality can be that large.

Per FTC guidelines (ftc.gov), advertising claims about product performance must be truthful, not misleading, and substantiated with evidence. Sound clips count as evidence — but only for the vehicle they were recorded on.

Step 4: Are Muffler Deletes Illegal? The Straight Answer

I get asked "are muffler deletes illegal?" at least once a week. The honest answer: probably, depending on where you live. There's no single federal law that says "you must have a muffler." But several state and federal rules effectively require one.

• California Vehicle Code 27150 requires every vehicle to have a muffler that prevents "excessive or unusual noise." No muffler = no compliance.
• EPA regulations under the Clean Air Act prohibit tampering with emission control components. A muffler delete that includes the catalytic converter crosses into federal territory.
• Many states enforce decibel limits for road vehicles, typically measured under SAE J1169 test procedures.
• In states with safety inspections, a muffler delete can fail you without any roadside interaction.

Take this with a grain of salt — I'm a parts installer, not a lawyer. What I can tell you from experience: I've watched four customers get pulled over within two weeks of a muffler delete and come back with fix-it tickets. In rural areas with no inspections, enforcement may be rare. But "rare" is not a strategy.

Step 5: The Honda Fit Exhaust System — Expect Reality, Not Magic

The Honda Fit exhaust system is one of the most commonly modified parts on a car that genuinely doesn't need it. The 1.5L engine makes roughly 130 horsepower from the factory. A cat-back exhaust might gain you 2–5 horsepower. That's not a performance upgrade; that's a personality change at best.

I have mixed feelings about this. On one hand, if you want your Fit to sound more assertive, that's your call. On the other, I've removed $700 cat-back exhausts that customers loved for exactly three months — the usual time it takes for highway drone to become an issue.

The upside was a fun weekend and a different soundtrack. The risk was $700 plus labor plus the eventual cost of reverting to stock. I kept asking myself each time a customer brought this up: is that worth it? Some say yes. Some say no. The problem is most people never ask the question until they're already at the counter.

Step 6: Warranty and Emissions — the Part Nobody Reads About

Never expected this to be the reason a customer lost $1,200, but here we are. An exhaust modification can trigger code P0420 when O2 sensor readings fall outside expected ranges. A headlight swap can generate CAN bus errors if the load isn't right. And both can complicate warranty claims on modern vehicles.

Under the Magnuson-Moss Warranty Act, a dealer can deny coverage only if they can prove the aftermarket part caused the defect. That sounds good in theory — in practice, "only if" still comes with a fight.

What I do now before every install:

1. Photograph the vehicle's condition before touching anything.
2. Photograph the part's packaging, part number, and serial number.
3. Record the VIN, odometer reading, and any existing check-engine codes.

That documentation has saved us from three warranty disputes in the past 18 months. It feels unnecessary until the day it's the only thing standing between you and a $1,500 repair bill.

Step 7: Be Honest About the DIY Question

The upside of installing my own Morimoto V2 headlights was saving $400 in labor. The risk was a misaligned beam, a damaged wiring harness, or a broken bumper clip. I kept asking myself: is $400 worth potentially turning a $940 set of headlights into a $1,300 headache? My ego said yes. That was stupid.

Here's the thing about RAM trucks specifically: most headlight replacements require loosening or removing the front bumper, and those clips are not built for repeated removal. They break. I've done three bumper removals in my own lifetime and I've still cracked clips every single time.

My rule now: if the install requires bumper removal, it goes to the shop. If it's a bulb, module, or fuse swap, I'll do it in the driveway. That simple line has saved me money, time, and a walking trail of plastic shards.

Mistakes I Still See Customers Make

• Trusting "fits all years" listings. The RAM 1500 2013–2018 vs. 2019+ issue is just one example. The same problem exists across almost every popular truck and SUV.
• Buying based on sound clips without any search for "same vehicle" footage.
• Removing the catalytic converter to make the exhaust louder. That's federal tampering, likely to trigger the CEL, and no reputable shop will do it for you.
• Skipping the post-install beam alignment check. Headlights can look correct in the driveway and blind every other driver on the road.
• Not keeping stock parts. You'll need them for trade-in, resale, or the day you move to a state with stricter rules.

The Bottom Line

Morimoto makes genuinely good headlight options. The V2 lineup is one of the better aftermarket choices for RAM and other trucks — I install them regularly and the customers are usually happy. Exhaust products like Purple Hornies and cat-back systems have their place, too. But "good" is always conditional: good for your specific vehicle, legal in your state, and compatible with your actual expectations.

The difference between an upgrade you love and one you remove after three months is almost never the product itself. It's the research you did — or didn't — do before buying. Run these seven steps, skip the excitement purchase, and your bank account will thank you.