LS-ONE_DAY

I'm about to give in and buy ARH long tubes for my 99 Formula but there are a couple questions that I would like to have answered before I buy so if anyone that has ARH headers or knowledge of them can help that would be great.

1. I know ARH headers come with gaskets but are they GM MLS gaskets like everyone recommends or are they something else?

2. I assume it comes with header bolts as well, but can anyone verify this?

3. What are the dimensions of the box that the headers come in? My father hates having car parts laying around and I'm not sure when they'll be installed so I might have to transport them over to a friends house and I need to know how big the box is.

xXSilencerXx

iTrader: (4)

They come with crappy gaskets, I wouldn't use them. I bought new GM MLS gaskets. They do not come with header bolts. Box is like 13x26x48 or something, large but not huge.

oldmano2z

i for one like their grafite gaskets . i had no problem with them in fact i took the my headers off for a motor swap and definitly had a tight seal. in fact i ordered another set for my swap when i think i could have reused the old ons.

Orange Juice

iTrader: (3)

My vote is for the GM steel gaskets and just stick with the stock bolts.

LS-ONE_DAY

Ok, can someone give me a part number for the recommended GM ones just in case? I saw many different ones on RPMSpeed/WS6Store and Texas Speed

djfury05

iTrader: (30)

http://www.ws6project.com/user_stor/...ets-set-of-2-/

Also, get 1 7/8" from the get go. You will need o2 extensions or longer o2's. I like and use Bosch 13111 sensors. They are always in stock at Autozone/Advance etc (they are for Corvette's so they are much longer and will work for our cars)

LS-ONE_DAY

I'm pretty sure ARH headers come with extensions...don't they?

djfury05

iTrader: (30)

no they don't.. It is just the header and a graphite exhaust manifold gasket

LS-ONE_DAY

Great....what length extensions are needed?

SteelCityYaga

That's correct when you order just the headers.

If you order the ARH System (headers and Y-Pipe) it will come with O2 Extensions, Gaskets, Y-pipe Clamps, and Bolts for the y-pipe hanger.

Around 20 inches should work.

LS-ONE_DAY

Oh ok good, I'm getting the header/y-pipe package so I guess I won't need the extensions. I'm getting prothane motor mounts and the EGR delete plug for the intake in the cart as well. I saw in a previous thread that the ARH gaskets are good but I might get those OEM GM MLS ones too. Right now I'm looking at $1,369. Expensive but it should be worth it as long as there are no hidden surprises

Orange Juice

iTrader: (3)

If you are getting the car tuned after then you can just tune out the rear O2's altogether.

LS-ONE_DAY

No its not getting tuned for a while. I will do a Frost mail tune to pass emissions and tune out the rears later. I was just worried about extensions for the fronts. I think I'm going to buy it all this weekend. I have a buddy that can get me lift access for cheap so that should make everything easier.

SteelCityYaga

When you order, ask for an extra bung and plug on the driver side header for Wideband/Dyno tuning. It may be like a 20-30 dollar extra charge, but well worth it in the future.

LS-ONE_DAY

I've heard that you can order an extra bung on the headers but I never knew what it was for. Can you explain why its such a good addition? I'm already over budget on my cart by over $150 so unless its super important I'll probably pass lol

SteelCityYaga

I ordered mine with the extra bung so that I don't have to worry about disconnecting and removing the front O2 Sensor every time I wanted to tune.

It's not too important or else it would be standard on all headers, it is a time saver.

LS-ONE_DAY

Oh ok, I didn't know the front O2's had to be disconnected in order for it to be tuned. I'll probably go without them, I mean tuning costs the same no matter what with or without the extra bung. I'm ordering mine from WS6store/RPM Speed so idk if I would have to wait longer to get them too if I ordered an extra bung.

SteelCityYaga

They'll be coming from ARH directly. The vendor's don't have stock of headers. When you order from a vendor, they place the order to ARH, ARH will then put together the order. It will be about a week to 10 days before they arrive. It's easy for them to put in an extra bung, it'll take them about 30 minutes.

2k2cam

iTrader: (2)

+1 on the extra bung. I had one put in on my headers from ARH and they didn't charge me extra. I ordered directly from them though, not through a vendor.

Good luck with the install.

LS-ONE_DAY

Thanks, I'll shoot Mike at ARH another email. Should I specify that I want an extra bung in the comments of the order I guess?