Take your time and follow the directions, its pretty easy. I did this install by myself without a lift. Have fun with it
Dynatech Header Install
Thread Starter
Racer
Joined: Aug 2005
Posts: 494
Likes: 0
From: New Bedford MA
Dynatech Header Install
Hey Guys!! I'm going to be installing these headers next weekend and wondering if you have any last minute advice. I am going to purchase
O2 sims just encase the rear's throw codes. I've never done a header install before and I'm just wondering if there is anything I should look out for?
Thanks
O2 sims just encase the rear's throw codes. I've never done a header install before and I'm just wondering if there is anything I should look out for?
Thanks
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
Put the exhaust in with all bolt loose, and take a good look where the O2 sensors will go and mentally route the wires. Remove exhaust piping downstream of headers and then take your time and make sure the O2 wires are routed well and secured. I didn't do this and had to spend lots of time *after* everything was tight and route/secure the wiring. It was much more difficult with the tight spaces, and I still worried about burning wires. Other than that, the install goes per the directions. I think the directions even tell you to route/secure the O2 wiring before installing the cats, etc., but I wasn't paying attention. The install directions are very detailed.
Advanced
Joined: Mar 2005
Posts: 97
Likes: 0
From: Northern Virginia
You may want to think about what header gaskets you are going to use and have them available (supplied gaskets from dynatech vs LS1 OEM). I can not comment specifically on the gaskets that come with the dynatech headers, but a lot of the "aftermarket" gaskets seem to have poor reputations. You may want to do a search on this.
Last edited by iaanr; Nov 5, 2006 at 11:40 PM.
Instructor
Joined: Mar 2003
Posts: 165
Likes: 0
From: King George Virginia
I did this mod about 2 weeks ago and had no problems. i wouldn't worry about gaskets, the ones that came with the headers were top notch. the only thing different i did than the directions said was I never touched the starter, i didn't need to. Mine is getting tuned this week, I did throw codes, it was the front two sensors. we will be moving the front ones forward and the deleting the rear ones.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
LS1 How to's has a great article on an install and all problems you might encounter! Here check it out if you haven't alredy
http://www.ls1howto.com/index.php?article=29
Thanks,Matt
http://www.ls1howto.com/index.php?article=29
Thanks,Matt
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Le Mans Master
Joined: Sep 2003
Posts: 6,273
Likes: 225
From: Farmington CT
Cruise-In VII Veteran
Originally Posted by C52000C5
Anything else I should worry about?
the cats are a pita to bolt together, the slip-fits aren't staggered making them difficult to fit w/in the tunnel
I've made the move to American Racing headers, fit is much better(waiting on 5 sets)
Le Mans Master
Joined: Sep 2003
Posts: 6,273
Likes: 225
From: Farmington CT
Cruise-In VII Veteran
Originally Posted by C52000C5
Am I going to need torchs to get the old bolts out of the stock system, or will they come out with out any problem?
Melting Slicks
Joined: Jul 2006
Posts: 2,094
Likes: 5
From: The 7th layer of hell - Western Washington
Mine just went in last weekend and zero problems to report. They were a little tight going in on the passenger side, but after a bit cussing and smoking a cigar they slipped into place. For some reason they settled a little bit after some driving and began to rattle on the passenger side heat shield along the torque tube, but a little pry bar persuasion and the heat shield is not a problem any more. Also the jet hot coating stinks pretty bad when it's first burning in, but is getting less noticeable every day. So far I haven't had any check engine lights due to the high-flow cats, but am either adding sims or deleting the rears from the system when I get tuned just to be safe. Good luck!
Melting Slicks
Joined: Oct 2006
Posts: 2,228
Likes: 5
From: Gainesville Georgia
This Is obvious but once your done with the Install, or even while your doing the Install, double check everything! make sure everything Is tight ect, ect... B/C one loose bolt and you will loose the Headers true potential. Good luck with them. 
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
Originally Posted by C52000C5
I hope this install is as easy as you guys are making it sound, my only concern is removing the stock system
Banned Scam/Spammer
Joined: May 2006
Posts: 4,285
Likes: 3
From: Fort St John B.C
I also did the dynatechs a few weeks back. * I didnt read the instructions*. I found removing the stock exhaust was the easy part.
I had to move the starter out of the way (mines a 99'). Also never had a problem with codes, yet anyways.
The gaskets that come with are pretty decent as well.
I think youll be happy with the results.
G'luck
I had to move the starter out of the way (mines a 99'). Also never had a problem with codes, yet anyways.
The gaskets that come with are pretty decent as well.
I think youll be happy with the results.
G'luck
Racer
Joined: Jan 2006
Posts: 265
Likes: 1
From: OKC OK
i did mine myself....no leaks .....no problems....just take your time ...old exhaust was very easy to remove.....take extra care routing your o2 wires away from heat.....i had to loosen the bolts on the starter, but didnt have to remove them. it was easier than i expected...only bolts you may have problems w/ is the stock manifold to exhaust pipe...i broke a couple but it made removal even easier.. you can do it.....
