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Just Trying to get a second opinion before I Order

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Old May 3, 2011 | 01:30 PM
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Default Just Trying to get a second opinion before I Order

ok, Planning on ordering the exhaust system for my 2002 Trans am tonight but just looking to see if I needed to buy anything else

planning to buy:
ARH Race Headers
ARH Catted Y
Corsa Cat Back
O2 Simulators (just planning on pluggin the hole in the Y)
Stage 8 Locking Bolts
Header Gaskets
2 o2 Extensions


Also The car has 78xxx Miles on it, Should I consider changing the plugs and wires? Car is jumpy at idle... Rpm Stays the same, It almost just feels like it misses or something????
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Old May 3, 2011 | 01:43 PM
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If you ever plan to install any new motor mounts whether they are new stockers, poly, or solid. DO THEM NOW while the headers are out. Even if you go with new stock mounts!!

I would use new GM header gaskets if you can.

Can't hurt to change the plugs and wires. Why not get some fresh ones in there with fresh mods? I know people go forever on spark plugs, but with how cheap NGK TR55s are, I change them every year, sometimes more often. If you don't foresee any bigger mods anytime in the near future, save some money for a good quality tune.
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Old May 3, 2011 | 01:52 PM
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Change the plugs, then the wires if needed, and I'd definitely consider doing poly motor mounts with the exhaust out of the way.
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Old May 3, 2011 | 02:01 PM
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Originally Posted by HoLLo
If you ever plan to install any new motor mounts whether they are new stockers, poly, or solid. DO THEM NOW while the headers are out. Even if you go with new stock mounts!!

I would use new GM header gaskets if you can.

Can't hurt to change the plugs and wires. Why not get some fresh ones in there with fresh mods? I know people go forever on spark plugs, but with how cheap NGK TR55s are, I change them every year, sometimes more often. If you don't foresee any bigger mods anytime in the near future, save some money for a good quality tune.
Ah... Ok, this sounds good, Ill Get some new plugs in there at least since evrything is out of the way, Im also removing AIR while everything is out

Originally Posted by 99Bluz28
Change the plugs, then the wires if needed, and I'd definitely consider doing poly motor mounts with the exhaust out of the way.
Poly mounts sound good, Ill add that to my list
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Old May 3, 2011 | 04:46 PM
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Originally Posted by zx2ner25
ok, Planning on ordering the exhaust system for my 2002 Trans am tonight but just looking to see if I needed to buy anything else

planning to buy:
ARH Race Headers
ARH Catted Y
Corsa Cat Back
O2 Simulators (just planning on pluggin the hole in the Y)
Stage 8 Locking Bolts
Header Gaskets
2 o2 Extensions


Also The car has 78xxx Miles on it, Should I consider changing the plugs and wires? Car is jumpy at idle... Rpm Stays the same, It almost just feels like it misses or something????
You don't need O2 Sims, Extensions or header gaskets.

The ARH Kit comes with 2 O2 Extensions for the front O2 sensors. And you can just put in the rear O2s and start up the vehicle. I just did ARH Headers and I didn't throw any code when I fired it up. The Kit also comes with gaskets that seal well after retightening the headers after a dozen or so heat cycles.

I would suggest getting an extra wideband plug welded into the driver's side manifold. It will help with tuning later down the road.

As other suggested, plugs, wires and poly motor and trans mounts should be on the list.

Don't forget the anti-seize and loctite.
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Old May 3, 2011 | 04:57 PM
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good choice with ARH.
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Old May 3, 2011 | 07:55 PM
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Originally Posted by SteelCityYaga
You don't need O2 Sims, Extensions or header gaskets.

The ARH Kit comes with 2 O2 Extensions for the front O2 sensors. And you can just put in the rear O2s and start up the vehicle. I just did ARH Headers and I didn't throw any code when I fired it up. The Kit also comes with gaskets that seal well after retightening the headers after a dozen or so heat cycles.

I would suggest getting an extra wideband plug welded into the driver's side manifold. It will help with tuning later down the road.

As other suggested, plugs, wires and poly motor and trans mounts should be on the list.

Don't forget the anti-seize and loctite.
Huh, I didnt even realize that the arh came with the extensions and gaskets...

good idea about the wideband, wouldve never thought of that

and the reason for the o2 simulators is just so i dont ever have to worry about the codes whatsoever
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Old May 3, 2011 | 08:33 PM
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Originally Posted by SteelCityYaga
YI just did ARH Headers and I didn't throw any code when I fired it up.
If you removed EGR/AIR also, you will see a code in a few days... and most ypipes don't have the bung for rear O2s, making O2 sims or a tune to delete the rear O2s necessary to pass some not-so-Cali type of emissions
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Old May 3, 2011 | 08:36 PM
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Originally Posted by HoLLo
If you removed EGR/AIR also, you will see a code in a few days...
Planning on getting hp tuners, or ls1edit so i can delete those codes... ive got about $3500 budgeted for the stuff i plan to install when i get my exhaust, I just havent had a chance to research all of it yet
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Old May 4, 2011 | 06:12 AM
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Good pick on the ARH's Def go with the GM factory gaskets, I used the stage 8 bolts worked great. trick- take your tran cross memnber down and drop the trans a bit they will go right in didn't even have to take off the oil filter.
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Old May 4, 2011 | 06:48 AM
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Originally Posted by toadzq8
Good pick on the ARH's Def go with the GM factory gaskets, I used the stage 8 bolts worked great. trick- take your tran cross memnber down and drop the trans a bit they will go right in didn't even have to take off the oil filter.
thanks for that... gm factory overall other gaskets?
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Old May 4, 2011 | 07:03 AM
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Originally Posted by HoLLo
If you removed EGR/AIR also, you will see a code in a few days... and most ypipes don't have the bung for rear O2s, making O2 sims or a tune to delete the rear O2s necessary to pass some not-so-Cali type of emissions
That's true, but I didn't remove the EGR/AIR, I know I should, but at this juncture I didn't.

The ARH System has bungs for the rear O2 sensors located downstream of the Cats, for the rear sensors you do not need to have any extensions, they plug directly to the factory harness without splicing. There's a reason why ARH's are so expensive and it's b/c of the amount of research and development to have great fitting headers with least amount of issues.

Originally Posted by zx2ner25
Planning on getting hp tuners, or ls1edit so i can delete those codes... ive got about $3500 budgeted for the stuff i plan to install when i get my exhaust, I just havent had a chance to research all of it yet
That's a good idea, you can still leave the rear O2s connected and in the pipe to pass a visual inspection if your area is strict on visual inspections (NC is).

Originally Posted by zx2ner25
thanks for that... gm factory overall other gaskets?
No - just pick one set of gaskets and use them. Either ones will work - only the ARH gaskets will need to be retorqued after some heat cycles due to the gaskets compressing.

Originally Posted by toadzq8
Good pick on the ARH's Def go with the GM factory gaskets, I used the stage 8 bolts worked great. trick- take your tran cross memnber down and drop the trans a bit they will go right in didn't even have to take off the oil filter.
I did not take the trans cross member down to install the headers, I did remove the steering shaft on the driver's side to fit them in - slid right in after the steering shaft was removed. For the passenger side I probably should have let the transmission drop some as my headers kept hitting the bell housing, so I just ground down about an 1/8th of an inch of the bell housing (No biggie) and then they just slid right in. When I did get them installed they fit great and have great clearance.

Also, unlike other header systems you will not have to modify the dipstick to install, it again slides right in.
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Old May 6, 2011 | 12:09 PM
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yeah if you're spending that much money, you obviously aren't hurting for money, lol it wouldn't hurt to replace them while you have the old exhaust out, plus it's alot easier to do while out, p.s. i used the stage 8 locking bolts and they're awesome, no need for retightening, i got summit brand plug wires and are very happy with them as well, i heard the msd's break once you go to pull them off the plugs when they've been on there a while
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Old May 6, 2011 | 12:52 PM
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Originally Posted by shepss217
yeah if you're spending that much money, you obviously aren't hurting for money, lol it wouldn't hurt to replace them while you have the old exhaust out, plus it's alot easier to do while out, p.s. i used the stage 8 locking bolts and they're awesome, no need for retightening, i got summit brand plug wires and are very happy with them as well, i heard the msd's break once you go to pull them off the plugs when they've been on there a while
not hurting for money just yet, hahaha, I just bought the car 3 weeks ago, so Im just using the excess up for mods.... had $19000 to buy a car with, so $12000 of that went to buying the car, paying the insurance in full, and getting plates... now i have mod money... its almost all gone though
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Old May 6, 2011 | 01:24 PM
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motor and tranny mounts
spark plugs and wires
GM header gaskets
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Old May 6, 2011 | 01:48 PM
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I would skip the locking bolts too, I put my headers on and checked them after a few heat cycles and they were perfectly tight. Been on there for 2 years and never loosened any.

Good ls1 headers have thick enough flanges its not an issue.

Definitely get motor mounts, and I also reused the stock manifold gaskets, they no not leak either.

I try to be thrifty where I can, more money for more mods.
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