Has Dynatech resolved the problems with their headers?
Thread Starter
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From: Monticello MN
Has Dynatech resolved the problems with their headers?
I'm looking to purchase some long tube headers and the Dynatech supermaxx system looks pretty good. However, I've read some things about O2 sensor wire routing, someting about the steering column interfering, and, I believe, someting about the transmission tunnel covering requiring some large holes to be drilled. Please educate me on these headers and how the issues have been addressed. Thanks!
Ed
Ed
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From: DFW Texas
I don't know anything about these headers. However here is a topic with the same headers. He got a whole 2 hp out of the headers????
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
Safety Car
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From: Dayton, Ohio
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As far as I know, there arent any problems with them.
I've never heard anything about the o2 wires being a problem.
The steering shaft issue has been resolved with a slightly different bend in the headers.
The only transmission tunnel problem that I have heard of has been with the aftermarket tunnel covers that are thicker, therefore causing a problem. If there is a problem with the stock tunnel covers, I am unaware.
To the other post with the guy that only got 2hp...I think it has been addressed that there is something wrong with those dyno numbers. The before and afters just dont match up with what anyone else seems to have.
I've never heard anything about the o2 wires being a problem.
The steering shaft issue has been resolved with a slightly different bend in the headers.
The only transmission tunnel problem that I have heard of has been with the aftermarket tunnel covers that are thicker, therefore causing a problem. If there is a problem with the stock tunnel covers, I am unaware.
To the other post with the guy that only got 2hp...I think it has been addressed that there is something wrong with those dyno numbers. The before and afters just dont match up with what anyone else seems to have.
Last edited by Ego-Trip; Dec 3, 2004 at 09:36 AM.
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From: Indianapolis Indiana
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O2 wires are a problem with all headers, since you need to be careful where to route them of they will get burnt. LG's are a bigger O2 wire mess since they DO NOT use the rear O2 sesnsors and their cats are a great distance from the original cat position, making wiring more complex.
The Dynatech steering shaft issue has been fixed for many months now.
I've never heard of the transmission issues you speak of...
The guy that got 2hp had some strangely high baseline dyno numbers. Read the whole thread.
*There is minimal difference between headers performance.
http://www.z06vette.com/forums/showthread.php?t=66435
Both LG and Dynatech are 100% stainless. There IS a big difference in price. LGMs are about $650 more than Dynatech's. Kooks are also very good, but are not 100% stainless, tougher to install, and pricier than the dynatechs.
The Dynatech steering shaft issue has been fixed for many months now.
I've never heard of the transmission issues you speak of...
The guy that got 2hp had some strangely high baseline dyno numbers. Read the whole thread.
*There is minimal difference between headers performance.
http://www.z06vette.com/forums/showthread.php?t=66435
Both LG and Dynatech are 100% stainless. There IS a big difference in price. LGMs are about $650 more than Dynatech's. Kooks are also very good, but are not 100% stainless, tougher to install, and pricier than the dynatechs.
Last edited by BQuicksilver; Dec 3, 2004 at 10:55 AM.
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From: Loveland CO
Like these guys have already said, the issues with the steering shaft were resolved. We use the Dynatechs on the majority of the C5's we have in the shop. I have only heard a few negative comments about these headers. It seems to me that the majority of our customers really like these headers. Call me if you have any questions. 303 438 1571. Kaley
Drifting
Joined: Jul 2004
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From: DFW Texas
These headers are of very high quality and the ease of installation along with fitment is excellent. I don't know what happened with my dyno results but the car is much stronger now then it was before. I'm working on getting the graphs up for everyone to see. I only gained a few peak hp and had some increase under the curve but not what I was expecting. I have about a 1/2" between the steering colum and the header tube. Also, if you do buy these headers go to Home Depot and purchase cable restraints to hold the O2 wires away from the headers. I did that and the installer said they worked perfectly. Here's the link. http://www.z06vette.com/forums/showthread.php?t=68504 If you want a real long tube header system with cats that is affordable then buy the Dynatechs.
Last edited by CNB; Dec 3, 2004 at 12:12 PM.
Team Owner
Joined: Mar 1999
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From: At the beach in little Rhody
Originally Posted by BQuicksilver
O2 wires are a problem with all headers, since you need to be careful where to route them of they will get burnt.
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Originally Posted by Chad954RR
I don't know anything about these headers. However here is a topic with the same headers. He got a whole 2 hp out of the headers????
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
Something is wrong and people don't seem to like them at all.
http://forums.corvetteforum.com/showthread.php?t=960193
If I was you I would go with LG Headers. Doing it right the first time is always a plus.
As far as something being wrong and people not liking them, where is that info coming from??????
LG's headers are nice, but certainly not worth the extra $600 in my book. I have had TPIS,Dynatech and Kooks. Currently I run the Kooks 1 7/8 on my 408 and the Dynatech's on my 346 H/C. The Dynatech is a top quality unit and you can't beat the price!!!!
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From: Loveland CO
Guys, a dyno is basically a tuning device. Your car can be faster and not show numbers on the dyno. Take it to the track and have some fun. When I decide what route I am going with my car these will be the headers that I use. Kaley
Thread Starter
Safety Car
Joined: Oct 2000
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From: Monticello MN
Well, I guess what's left is to find the best price on the Dynatechs and an installer to put them in at a reasonable price. Any thoughts on best pricing would be appreciated! thanks!
Ed
Ed
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From: Streamwood illinois
i had to dent in my torque tube cover to clear my front o2 sensors. T hey would hit if i didnt do this. Mine also hit the steering shaft on hard left turns. I actually disabled my rear o2 sensors because i was getting the 420 and 430 codes. Well dynatech stepped up to the plate and sent me 2 new cats which fixed the codes, but is till keep the rears disabled so i have less wirest o burn 
. The front o2s need to have the wires kept away from the headers but that goes for anything near any exhaust. I didnt see any ET or MPH gains at the track when I put the headers on, however i did eventually get a wideband and saw why i didnt see any performance gains. I was running very rich. I leaned out the car and gained 2 mph and .2 (give or take a bit). But ET/MPH is where its at for me. I dyno'd a whopping 330 RWHP yet I can trap 115 in the 1/4.
Dave
. The front o2s need to have the wires kept away from the headers but that goes for anything near any exhaust. I didnt see any ET or MPH gains at the track when I put the headers on, however i did eventually get a wideband and saw why i didnt see any performance gains. I was running very rich. I leaned out the car and gained 2 mph and .2 (give or take a bit). But ET/MPH is where its at for me. I dyno'd a whopping 330 RWHP yet I can trap 115 in the 1/4.Dave
Racer
Joined: Oct 2001
Posts: 255
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From: Helena, AL
I got my Dynatechs about a month ago when TByrne ran the last special. They installed without a problem and I have a VNM Backbone. There has been no problems with burning O2 wires either. I have been running them without tuning and have had no SES lights. I noticed a nice seat of the pants improvement but am waiting for my HPTuners to come in before I go to the dyno. I think they are great headers for the price. My mechanic said it was the nicest hardware he had seen with a set of longtubes.
Burning Brakes
Joined: Dec 1999
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From: Layton Utah
I went thru the same info gathering on headers for my 99 A4. After all said and done, Dynatech's SuperMaxx headers were my choice. I've not seen any of the other brands but it would be hard for me to believe that the quality or fit could be any better. Installation went as advertised and everything seems to be just fine. Can't wait for good weather to take it out and see how it feels. The installed system with cats and X pipe look so good that I wish that more people could see how great it looks!
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From: Indianapolis Indiana
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Originally Posted by TT_Vert
i had to dent in my torque tube cover to clear my front o2 sensors. T hey would hit if i didnt do this. Mine also hit the steering shaft on hard left turns. I actually disabled my rear o2 sensors because i was getting the 420 and 430 codes. Well dynatech stepped up to the plate and sent me 2 new cats which fixed the codes, but is till keep the rears disabled so i have less wirest o burn . The front o2s need to have the wires kept away from the headers but that goes for anything near any exhaust. I didnt see any ET or MPH gains at the track when I put the headers on, however i did eventually get a wideband and saw why i didnt see any performance gains. I was running very rich. I leaned out the car and gained 2 mph and .2 (give or take a bit). But ET/MPH is where its at for me. I dyno'd a whopping 330 RWHP yet I can trap 115 in the 1/4.
Dave
. The front o2s need to have the wires kept away from the headers but that goes for anything near any exhaust. I didnt see any ET or MPH gains at the track when I put the headers on, however i did eventually get a wideband and saw why i didnt see any performance gains. I was running very rich. I leaned out the car and gained 2 mph and .2 (give or take a bit). But ET/MPH is where its at for me. I dyno'd a whopping 330 RWHP yet I can trap 115 in the 1/4.Dave
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
I e-mailed Dynatech several weeks ago before my final decision to go with the QTP's. Here is what they sent me on the steering shaft issue:
Hi Bob
We have tucked the headers in a little tighter than before because of the
few instances where they had steering shaft problems. We also found out
that some of the steering shafts were not straight from the factory.
The O2 sensor issues in the tunnel should be corrected by rotating the
interim tubes so the O2 sensors do not hit. That is a close fit in the
tunnel though.
Thanks for your interest in Dynatech Headers.
John
Good luck with your decision, after my QTP header installation the difference in the car with sound, power, how it responds and even how it drives in 6th gear on the highway is sensational. I think the header modification is a great thing to do on these cars. I also had a lot of fun doing the installation, great diversion when you get home from work
Hi Bob
We have tucked the headers in a little tighter than before because of the
few instances where they had steering shaft problems. We also found out
that some of the steering shafts were not straight from the factory.
The O2 sensor issues in the tunnel should be corrected by rotating the
interim tubes so the O2 sensors do not hit. That is a close fit in the
tunnel though.
Thanks for your interest in Dynatech Headers.
John
Good luck with your decision, after my QTP header installation the difference in the car with sound, power, how it responds and even how it drives in 6th gear on the highway is sensational. I think the header modification is a great thing to do on these cars. I also had a lot of fun doing the installation, great diversion when you get home from work
Le Mans Master
Joined: Oct 2003
Posts: 6,126
Likes: 19
From: Streamwood illinois
Originally Posted by vettenuts
I e-mailed Dynatech several weeks ago before my final decision to go with the QTP's. Here is what they sent me on the steering shaft issue:
Hi Bob
We have tucked the headers in a little tighter than before because of the
few instances where they had steering shaft problems. We also found out
that some of the steering shafts were not straight from the factory.
The O2 sensor issues in the tunnel should be corrected by rotating the
interim tubes so the O2 sensors do not hit. That is a close fit in the
tunnel though.
Thanks for your interest in Dynatech Headers.
John
Good luck with your decision, after my QTP header installation the difference in the car with sound, power, how it responds and even how it drives in 6th gear on the highway is sensational. I think the header modification is a great thing to do on these cars. I also had a lot of fun doing the installation, great diversion when you get home from work
Hi Bob
We have tucked the headers in a little tighter than before because of the
few instances where they had steering shaft problems. We also found out
that some of the steering shafts were not straight from the factory.
The O2 sensor issues in the tunnel should be corrected by rotating the
interim tubes so the O2 sensors do not hit. That is a close fit in the
tunnel though.
Thanks for your interest in Dynatech Headers.
John
Good luck with your decision, after my QTP header installation the difference in the car with sound, power, how it responds and even how it drives in 6th gear on the highway is sensational. I think the header modification is a great thing to do on these cars. I also had a lot of fun doing the installation, great diversion when you get home from work
Dave
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Dave,
I know. Unfortunately he misunderstood the question when I sent it to him and several new Dynatech owners told me they didn't have the problem so I didn't pursue it any further.
I know. Unfortunately he misunderstood the question when I sent it to him and several new Dynatech owners told me they didn't have the problem so I didn't pursue it any further.
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From: TX
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We have installed two sets of Dynatech headers in the last 3 weeks. Perfect fit and no issues whatsoever. Great headers for the money imo.
Nate
Nate
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