4th Gen 4Runner Headers Install | For 4th Gen 4Runner (03-09) - 6TH ENGINE MOD

[@lawrencereyes5519]

Glad to see someone made a video reviewing these JBA headers! Bought mine recently, along with an 18” magnaflow muffler & aero exhaust 3.5” resonator. Stoked to get these installed!! The end result sounds great

[@airsoftmechanic]

Be ready incase you get a check engine light. Other than that, good luck on the exhaust setup!

[@Ajtejeda3180]

I got the 4.7L V8. Threw some Doug thorley shorty headers on with high flow cats and Borla muffler. Next is cold air intake

[@airsoftmechanic]

Imagine if you had long tube headers. It would be rowdy!

[@Ajtejeda3180]

@ maybe the next gen4 will have those. So far I’m happy with everything. Just having this issue with the AC, replaced the compressor, condenser, high and low lines but now I think it’s the evaporator which is inside the dash. Big job 😢

[@JonFox1945]

What brand of high flow cats did you buy? Did you have to replace all four cats?

[@Ajtejeda3180]

@@JonFox1945 magna flow cats. Only using two with spacers on the O2 sensors.

[@seanf6868]

Needs a tune next, to really unleash the yota beast

[@airsoftmechanic]

The tune would help for sure

[@andrewhahn6397]

What tune do you like for these

[@MrLopez-lm4jk]

How do you go about tuning no idea were to start

[@cbizzle2590]

Bruh when the HELL has it been 45 F in Houston lmao Great job on the video!

[@airsoftmechanic]

@@cbizzle2590 Around end of March was when it was still cold haha 😂 thanks mane!

[@JesusChristson]

@@airsoftmechanicyou almost got me on my 4runner to go visit my uncle in league city… I need that 45 degrees that’s how it was during new years at Texas dyke jeti.. does it burn more gas now?

[@sssnipermonkey5566]

Owning a v6 is peaceful. Owning a V8 is something else.

[@jamesbasye2362]

Why? Just curious, not saying your wrong, but isnt the v8 reliable, i own a v6 and this gen has its share of own issues

[@2-old-Forthischet]

We in the old hot rod gearhead crowd, call these shorties. Shorties are pretty much for show and no go. Oh yes, they do make it louder, but so do fart pipe mufflers.

[@airsoftmechanic]

Shorty headers have their purposes. As much as I want long tube headers, the cost in the long run would be very expensive

[@ThePwak007]

No there's definitely performance improvements haha not just sound. This isn't a carbureted cadillac from the 70s making 108hp out of a 7 liter V8 haha

[@2-old-Forthischet]

@@airsoftmechanic yes, I understand.

[@JesusChristson]

Nice! Been eyeing the stuck rusty ones seem like they could use an upgrade

[@Cardoza0727]

I need to do this on my 05 v6. I currently have the same codes. Driver side manifold I’m sure there’s a leak. Just wasn’t sure if I should get headers for it because I’m scared it’ll throw codes again lol how much was it for labor to install them? Great informative video.

[@airsoftmechanic]

@@Cardoza0727 it was $250. Some places will charge more than $500 for the labor

[@DonnieNunez-e7b]

Hey man where did you get your y pipe and your cat back from?

[@airsoftmechanic]

Got my Y-pipe from Urdusa.com, and got my cat back exhausted from Burtmanindustries.com (both no longer in stock as I got them years ago)

[@MrLopez-lm4jk]

Give us an update and codes activated. How much more hp? What do you like and not like.. i have the same build rn.

[@airsoftmechanic]

Start at 6:11 and it’ll basically answer your questions. Now for what I like and don’t like… What I like: They’re cheap but they work, not too loud, makes the exhaust sound nice, noticeable increase in torque, they help the engine breathe better, they’re lighter than the stock headers What I don’t like: The mating surface looks sloppy, the chance of having an exhaust leak where the headers meet the block, I couldn’t avoid the Check Engine Light, these headers require cutting and welding so I had to pay a bit on labor (I prefer bolting on myself)

[@MrLopez-lm4jk]

@airsoftmechanic I just did mine today bro... I kept stock headers deleted cats put oxygen extendtenders to fool computer. put two resonator and a magnaflow exhaust. It's okay a Lil clappy when I punch it but nice at high and low speeds no check lights for me .. I think it was the best route

[@airsoftmechanic]

@@MrLopez-lm4jk ahhh not a fan of the clapped sound, but as long as you’re happy with it then that’s good

[@danksauron3172]

Seems like i have transmission dipstick on the passenger side that is very close to manifold. I'm not sure if the headders will fit becuse of that.

[@airsoftmechanic]

@@danksauron3172 Sounds like you have a 2003-2005 4Runner. The headers should work. But you’ll either have to relocate the transmission dipstick, move it around and work it with the headers, or not have to do anything!

[@spencerfelt2093]

Are any of your exhaust hangers tensioned? Even with the same shorty headers. Both sides of my exhaust had to be pulled up from there OG resting positions about 2 inches vertical to even match up with the jba shorties. And now my exhaust is tensioned. One hanger next to muffler is squished up, the y pipe hanger on drive side is pulled apart. How’s yours?

[@airsoftmechanic]

The URD Y-pipe doesn’t come with exhaust hangers so it’s all tubing. For my car back exhaust, they’re still the same as before

[@MrLopez-lm4jk]

How did you get rid of the p0420 codes

[@airsoftmechanic]

See 7:45 Added the spark plug non foulers, disconnected and reconnected the battery

[@DonnieNunez-e7b]

Hey man where did you buy the Y pipe from??

[@airsoftmechanic]

@@DonnieNunez-e7b Got my Y-pipe from Urdusa.com. Though it’s discontinued, so you would have to look somewhere else or have one custom made