chevnut55

Has anyone installed them on a 09 up? what part did not fit?

rcnells

I have an 09 as well and am waiting to hear..

LD85

I ordered Kooks instead of OBX, got a great deal from Maryland Speed so i took it.

Z06_N_SD

Good info guys, thanks. The o2 extensions came in on Friday, and the headers should be in on Monday. I might live dangerously and pull the manifolds tomorrow so I can just get down on it when it comes. Hopefully, I get the right part. Is coating them a must? Or will I be good with the plug covers? I didn't have any issues on my c5z

chevnut55

What did the kooks cost? you go with cats or cat delete?

ANGRY Z

I have bought 3 different sets of OBX's for 3 different vehicles and had zero issues with any until the last set I got. The set for my LS2 drivers side flange was jacked. Was warped and did not seal properly. So, make sure you check this out... Of course it wasn't until I started it up that I discovered the exhaust leak at the head. Not cool.

el es tu

most folks are fine with the covers, however coating helps keep underhood temps down and helps keep exhaust temps higher for better velocity, but it takes a few weeks turn around time so that can be a deal breaker...

If you do go that route, look into swaintech white lightning coating; its much thicker than the stuff the other companies use

Z06_N_SD

Got my *** kicked today. Pulled the xpipe no problem, finally got out the driver side manifold, but the passenger side -is still in the car. It's stuck pulling from the top, stuck pulling from bottom. Did u guys try to unbolt the cats from the manifold(making it a 2 piece). I tried, seemed like they were stripping so I gave up. Thinking of dremeling off 2 of the 4 studs tomorrow so I can slide it out of the bottom(on the nut side, as to not break integrity). What a pain. The install should be a lot easier, I hope.

Z06_N_SD

Got it! Just looked at an article for c6 Z06, not c6. The two oil sump lines need to be disconnected, as well as the starter cables(which I did). Gonna get my Jim Beam on now, and hit it hard in the morning.

LD85

Awesome notes, I'm watching from a distance, mine should arrive in a week or so

Misael

You mind taking/posting some pics? That would be great!

Z06_N_SD

No prob, working with an iphone but I'll get em loaded.

LD85

When you get the mid pipe back on, please let me know how much clearance there is from the top of the mid pipe to the Tunnel Plate.

Is there 1.0" gap or more etc?

Also, how long is the Tunnel plate?

Z06_N_SD

4 hours today...still cant manage to get that passenger side manifold out. removed the starter, those sump lines...EFF this. im cutting the downpipe off. i wanted to keep it in good condition in case VA state inspectors wont pass me with headers, but oh well. i have 12 mos.

black.z51.c6

dude just get a breaker bar and turn the nuts that mate the cats with the manifold, they will snap, I guarantee it. you may want to use a half inch breaker bar I broke the 3-8 one.

tennblkc6

soak the top and bottom of each bolt with pb blaster for a few hours. you will need to keep them wet. then when you start to try removing the bolts or nuts try tightening them a little first then try loosening them.this is what I had to do to remove mine.
good luck!

Z06_N_SD

I did it, cut the down pipe but ITS OUT!! Now that they're out, I'll work on those bolts at a later date, and take the down pipe to an exhaust shop to re weld. Had to close up shop as it got dark.

-drivers side is mostly in(not all bolts in)

-since I removed the starter and some chasis grounds, I'm looking for some wiring pics(always label!) as I don't recall exactly where they all go.

-question? Do I need rear o2 extensions as well?? Will I have to drill holes in the tunnel plate for the rerouting of wires?

-this has been the biggest bitch. Even the 4 day cam/valve spring installation in my c5z wasn't this bad. It better sound like a champ.

Z06_N_SD

I'll let u know

tennblkc6

your call on the rear extensions as you will probably have them disabled anyway. I went with extensions. and I wrapped them with dei heat tape and zip tied them away from the headers and x-pipe. I am going to jack her up this weekend and inspect the wires to see if everything's holding up. man...it sure sounds sweet. my system (slp full catless exhaust w/lm2) has drone but its like heaven to me. sounds great at idle, mean at part throttle and pissed at wot.

Z06_N_SD