3.8 GDI Full Exhaust system (Headers to tail pipe)

[DaNooch]

I know a lot of members on here are always looking for performance parts. Us Gen1 guys, whether 3.8 or 5.0, are limited to pretty much an intake and cat back exhaust for power mods. And then its pretty much one brand and thats it.. Well I Found some something pretty cool!!

So check it out i found a whole forward (engine to secondary cats) section exhaust system for us 3.8 GDI genny owners!! And its cheap as F! This eliminates all the cats and you get headers. Downpipes with flex joints and secondary cat delete test pipes. Everything is bolted together via flanges with gaskets.. No slip fit anything.

Most hate to hear it and will argue away but cat-back exhaust systems barely yield any HP gains.. unless its a heavily modded turbo or FI car, you are paying all that money for about 5hp if your lucky, weight reduction, SS longevity, looks but mainly you are paying for the sound. I know its gonna hurt a lot of feelings cause most paid $1k+ usually for a good exhaust system but, just research actual before and after Dyno results. Not the advertisement from borla magnaflow!! Lol, im talking real world dyno results be it magazine tests or just guys online... it hurt my feelings too..

But now!! You can spend $750, grt the largest HP gain pretty much possible for our cars besides strapping nitrous to it, its going to sound amazing even with the factory cat-back but, you dekete all the cats so it super illegal if you have emissions tests where you live, and it will guaranteed throw CEL lights for a S ton of OBD faults.

The only way to correct that and get it to go away would be to find a tuner that can turn off the rear 02’s if hes somehow deciphered Hyundai’s locks, and also actually tune the fuel maps and...well.....basically just do a full tune on the car because this modification will lean out the car big time. Heres the link and a pic.. Sorry 5.0 guys..

CNT Racing 10-15 Hyundai Genesis V6 stainless steel long tube header with down pipe and test pipes

 

[Fgpalmer71]

Is that for sedans.....or coupes?

 

[edizzle89]

Like the post above, they are most likely coupe headers, which will physically bolt to the sedan 3.8 being the same engine and all but it will come down to if they will have clearance issues fitting in the sedan chassis.

Also if they do work look into downstream o2 spacers to deal with the CEL from removing the primary cats. The idea is that it pulls the o2 out of the exhaust stream to dull the reading but it still sees exhaust gases so it doesn't think there's an issue. I used on on my A4 1.8t when i deleted the cat and i never got a CEL.

 

[DaNooch]

They are for sedans, if you go to their website they list everything for the coupe as “genesis coupe”

 

[Fgpalmer71]

If I would have known about this a month ago I might've kept the 2010 another couple of years and bought a G70 3.3TT instead of the 2016!!!

Of ALL the cars I've owned in my lifetime that was far and away my favorite of the bunch! Not the fastest, not the best handling, it was the best all around and I miss it! But the new one grows on me every day.....with every new mod.

 

[edizzle89]

They are for sedans, if you go to their website they list everything for the coupe as “genesis coupe”

I would call and ask before ordering $700+ worth of parts. With every single other hyundai part they sell being for a coupe and the listing for the headers not specifically saying 'for sedan' i'd bet they are for coupes.

 

[Phil~V6~Sedan]

Sooo.... nobody has verified if this is for a sedan yet???

 

[Chawk60]

Folks, quell your excitement. It sounded good, but I called and no... it's for a coupe only. Darn it.

 

[Phil~V6~Sedan]

What about those test pipes?

 

[Chawk60]

What about those test pipes?

I have read at least 3 1G members here have installed coupe test pipes that fit with no issues.

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