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....good thread.....I'm pondering going to some headers on my GS but question why you would not run cats? It seems that they would not effect performance.
Cats can go bad. (i've had the honeycomb break apart on me more than once, on different cars though so that's annoying).
They cost more.
And they can go bad (if you constantly run high levels of zinc in your oil?)
People think you're gonna reek of a gas station without cats. I think that's hilarious. Maybe they're trying to justify not getting them for some reason.
I've been catless since last may. You barely notice it except like i said cold start ups or if you're idling, then all of a sudden you just wanna adjust your rear license plate for a couple of minutes for some odd reason.
I don't use the AC in the summer so i have my windows open all the time while driving, no smell.
When i'm backing into my 100 foot driveway which takes about a minute, no smell.
At lights, no smell.
When i'm done driving, my clothes???? Yeah no smell.
Last edited by Z0HS1CK; Jan 3, 2016 at 09:19 PM.
Reason: spelling
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21
Another brand of headers that I always mention (and have) is Melrose. They are not stainless, but aluminized steel. They come with ceramic coating(inside and out). Will not last as long as stainless, but they will out live me. Aluminized steel is not as brittle as SS and a little lighter.
They're not cheap, tho.
Good luck with whatever brand you choose. If you stick to USA, the quality will probably be good.
My AR's are leaking at 6 pipes. Had them installed at a corvette performance shop about 2 years ago. I've talked and send photos to them, but so far no luck on getting a new set.$2100 wasted!!
That's terribly disappointing! There's just no excuse! Two grand for some bent pipes and you would think they could spends a couple more minutes welding.
According to Hinson they will be offering a catted 1 7/8" system shortly FYI. When I did the comparison it was exactly same item, line for line and the cost was more than double. That means a lot to me.
NSF
So I looked at this and I'm not knocking the Hinsons or TX Speed headers. Just understand that price doesn't include OEM gaskets, new header bolts, extenders (no cats so no extenders even needed), cats, coating (i track my car, it's 100% needed and also looks nice, cost $350 locally to gave done and not as good because not inside and out and not polished), no ball seat connections, and not sure about all the SS clamps and ports for tuning. Once you add that stuff in, I swear it's pretty much a wash in price. Kooks includes all of that in the base price! And your getting a premium product. If you plan to resale someday you'll get it all back anyways on resale and it's tough taking those other systems apart due to no ball/ seat connections.
Honestly, the best value in quality and price is Vararam, but after coating I would have saved like $200 so I went with American made Kooks.
As far as no cats, I like doing my little part for the environment. I'll keep the cats.
My AR's are leaking at 6 pipes. Had them installed at a corvette performance shop about 2 years ago. I've talked and send photos to them, but so far no luck on getting a new set.$2100 wasted!!
I ruled them out based on your photos. That said, it seems pretty isolated as ARH is known for building quality product.
So I looked at this and I'm not knocking the Hinsons or TX Speed headers. Just understand that price doesn't include OEM gaskets, new header bolts, extenders (no cats so no extenders even needed), cats, coating (i track my car, it's 100% needed and also looks nice, cost $350 locally to gave done and not as good because not inside and out and not polished), no ball seat connections, and not sure about all the SS clamps and ports for tuning. Once you add that stuff in, I swear it's pretty much a wash in price. Kooks includes all of that in the base price! And your getting a premium product. If you plan to resale someday you'll get it all back anyways on resale and it's tough taking those other systems apart due to no ball/ seat connections.
Honestly, the best value in quality and price is Vararam, but after coating I would have saved like $200 so I went with American made Kooks.
As far as no cats, I like doing my little part for the environment. I'll keep the cats.
All they recommend is the GM multilayer gaskets over and above their list price??? $30, so for Hinson VS Kooks same sameo because they don't have cats yet, they are at $840 VS $1720 catless system.
Not trying to start an argument as I like the Kooks but money is money which I don't have a bunch of, just an ole retired operator
We'll see when they have the proper system available because rite now they do not have the 3"X 21/2" done yet (or cats) so its all moot point for me. Good luck, I'm sure your Kooks will be great Let us know how it goes
NSF
I ruled them out based on your photos. That said, it seems pretty isolated as ARH is known for building quality product.
ARH is not the best header out there, they have a good name, but if you get a bad set like I did you are screwed. The shop ordered them and installed them. I would go with Borla's because they would of sent a new set out.
That's terribly disappointing! There's just no excuse! Two grand for some bent pipes and you would think they could spends a couple more minutes welding.
They don't weld around the outer pipes, they are welded on the inside.
I imagine you saw MSRP on the website and that was correct.
Speak to Maryland Speed. I paid in the $1600s for what I told you I got. The bummer is that my car already has ceramic coated LS7 manifolds and a Dr. Gas X pipe. That means I'm probably looking at only about a 10 rwhp gain adding in the headers. But for me to do anything more, I needed the headers as the base. And I want to do more.
PS. Would you like to purchase my LS7 manifolds and Dr. Gas X pipe? Previous owner dynoed 14 rwhp gains with just the manifolds before he even added the Dr. Gas X pipe so you would get about 75% of the header gains, for a few $100 bucks and still look stock. due to the Dr. Gas X pipe however it definitely doesn't sound stock.
For those questioning header coatings.
Done correctly with a good ceramic coating inside and out they are far more than decorative.
The ceramic coatings cool down the engine bay, flow better inside the header, and will also keep the interior temps down. I would be tempted to coat even the extensions and or the x pipe to help keep cabin heat down.
I would also recommend quality header bolts that lock in place http://shop.totallystainless.com/pro...eaderbolts.php
For those questioning header coatings.
Done correctly with a good ceramic coating inside and out they are far more than decorative.
The ceramic coatings cool down the engine bay, flow better inside the header, and will also keep the interior temps down. I would be tempted to coat even the extensions and or the x pipe to help keep cabin heat down.
I would also recommend quality header bolts that lock in place http://shop.totallystainless.com/pro...eaderbolts.php
It's not just under hood heat, or aesthetics, but also exhaust velocity by preventing sudden exhaust condensing. An important aspect when adding headers imo.
I just wouldn't install headers w/o doing the coating at the same time. But a good coating, not one that flakes during install which I have also seen around here.