Is the Dynatech headers w/cats wire harness problem a real issue or an installation challenge? Can burning the wires be avoided? Any other issues with these headers as they sound like a good deal for the money.

In regards to LG headersw/cats is it true that you can only hook up two of the sensors? Is there a remedy for this? Looking to have the least problems with these headers I put on. Gues they are the "cadillac" of headers based on what I heard (and the price).

Overall would the shorties be less of a headache?

Enough questions for now--appreciate your feedback!

Hal

 

I have gone through this whole thing myself recently. The LG's are lighter weight than the Dynatechs but only use the front two O2 sensors. You will either need O2 SIMs or have someone edit out the rear O2 sensors if you go with the LG's. Both are easy to install, relatively speaking. What I have found bothersome is that several have recently removed the Dynatechs in favor of another header. Not sure I understand why, but it is disturbing. I think the LG's are a better design, but you have to decide if this is worth the extra money.

I also looked as several other brands in my review, and the one that still stands out is the QTP headers. I like the Tri-Y design for street use, they are stainless as well, install easy and couple to the Random Tech X-pipe setup. Both the QTP's and the LG's seem to do a good job of raising the lower RPM performance as well, and since I don't track the car, this is important to me. So for me, it has come down to the LG's or the QTP's. I also plan to install the tunnel stiffening plate, which adds weight no matter which plate (aluminum or SS) you decide on. So to try and not increase the overall car weight, I am looking at header systems that reduce weight to trade the additional weight of the tunnel plate off. This is where the Dynatech's have a problem, they are 63 lbs or about 20 lbs heavier than the LG's and also heavier than the stock system they replace. I don't have a weight on the QTP's yet.

As you make your decision, sift through the facts for the type of system you are looking for. All of them will be an improvement over the stock system if properly tuned, but you need to decide what you are looking for and how you will use the system. Good luck

 

You gave me a lot of good info top think about--wow? I was kind aleaning toward the Dynatech but I must admit I am concerned about that weight issue. Thanks again!

 

Not to mention that there is a sale going on with the LG Pro Long Tube headers, ( in this section).

There are so many reasons why the LG headers are better you can just do a search and you will come up with a Library on the subject.

thanks and feel free to call me if you have any questions

Lou Gigliotti LGMotorsports.

 

I am thinking the same way as vettenuts. QTP with the Try-Y look good and seem to produce higher low end torque. Can LG chime in and give pros and cons t with a standard long tube and the Try-Y without getting into a WAR

 

i remember an issue posted about the dynatech rubbing against the steering shaft(sp?) on some customers cars... probably due to tolerances withe steering shaft position and with header position.

Did they address/redesign the issue?

With the two choices you've mentioned, I'd go with LG. If you are open to a third, then I would toss in Kooks as an option... cause clearance is awesome (no rubbing), wires up with factory 02 wiring no problem and of course performance is up there.

good luck.

 

Lou:

Could talk about the sensor situation on your LT's. Can all 4 hook up easily like stock? I am interested in the system w/cats. Take care!

Dennis

 

I contacted Dynatech on this issue. Here is their response:

"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."

Of course that last sentence is a littel discomforting!!!

 

I have installed two sets of DynaTechs and have had no problems with the steering shaft or burning wires. It doesn't matter which header you install you still can burn wires if you don't route them correctly. It just depends on how deep you pockets are. You can't go wrong with any of the header systems out there.

 

Hi Dennis,

Because our cats are so far back it is not practical to lengthen the wires that far. So we run the cats but use the sims to satisfy the CPU. We have sold nearly 700 sets and more than half were with cats with no significant issues.

The Tri Y approach is not all that bad IF it is done properly. the problem is in the execution. the down side of a Try Y is that, when done improperly, they lose top end hp. The lengths of the tubes make a big difference and the compromises that have to be made for the C5 limit how much the tri Y headers make.


Our headers make the most Low end Torque while they still make very high top end hp. I would not hesitate to do a back to back against them.

thanks
Lou Gigliotti LGM

 

Thanks for everyone's input here. Looks like there are a lot of good ways to go here.

Hal

 

Yes, in that regard we are very fortunate.

 

when i installed the dynatechs on my friends car the problem was, the extensions provided were not long enough to route away from the top of the collector, so they were stretched tight against the top of the collector, so we just ordered longer extensions from summit racing and routed them up and out of the way of the collector. anothe problem i saw with the headers were the O2 sensors were very close to the heat shield, and i would worry when the engine torques on acceleration or deceleration the O2 might hit the shield. I have LGs on my car , i have had no problems with that set up except that the damn air tube connections both broke off, i thing because of a combo of thin metal, and poor welding, But they do make excellent power

 

one word Lg baby

 

 

have dynatechs, gained very good HP, fit is near perfect and they are stainless so they wont rust. my one tube does rub the steering shaft on hard right turns and front o2s willl hit the torque tube cover if you dont dent it some, but other then that for 600 less and not having to buy o2 elims or pay to tune, you cant beat the price of the dynatechs.


Dave

 

LGM all the way...