As far as how long I waited I ordered them last september and just got em yesterday. Thorley makes two runs a year for the LS4 engine. They don't like to stock the headers becuse of the space required and I guess becuse they are ceramic coated and could get banged up easly so they practice JIT manufacturing.

I guess also they got tired of me calling. I called on an average of twice a month since September

 

Tadd I cant remember if you told me already but did you have your DOD tuned out?

 

Let us know how the install is. I am curious to hear the cost or labor involved... One hold up for me getting a set. Can'twait to hear them tad

 

Yes DiabLew tuned out the DOD among tweaking other stuff. Once the headers are installed I understand I will need a re-tune already got that lined up with Lew

 

I am considering Muffler man here in town Shaheen Chevy recommended them. The New Service manager at Shaheens got cold feet about installing them




I have a quote from Muffler Man for $300 bucks to install but they want to see the directions before committing to that.
Headers listed on the Thorley site at $950 they sold them to me for $635 free shipping I ordered them back in September long wait


The instructions are straight foreword no loosening the motor mounts no jacking the motor just removing the rear bank coils and rear valve cover all plugs, wires, Oil & trans dipstick holders and Air intake must be removed


If I had a lift I'd try it myself. Install will take place around 1st week in April


Will take before and after pictures as well as sound recordings for you all

 

I wonder if they will give me that same price, do I need to do a special request or did they just offer you that price? I did talk to them yesterday over email and they said there is no wait right now and that they are ready to ship.

I was asking about DOD because I was told it may sound a bit off with the headers and DOD enabled. I will look into a tune if I follow the route you are taking.
Thanks a bunch Tadd

 

Slugger talk to Mike (a sales person at Thorley) mention me (Tadd La Duke) the dude that called in every month, and remind him of the deal he gave me and ask for the same. Tell him I love them and don't even have them on yet

 

LOL thanks Tadd. I discussed the install with my mechanic last Fall. He too was kind of iffy like your guy on whether or not he wanted to do the install.

 

Ya, the Idea of getting that rear header in is kind of scary. Muffler man seamed excited to do it. I see him this weekend with the directions and see if he still wants to do it at $300

 

Ill talk to Thorley this week on the phone and see if i can get the price.

May wait till your done to see what problems your guy runs into if any. Hopefully not.

Are you going to do a dyno before and after to see how much power increase you get? If not, how much do you think or have been told it will be.

Me personally I just want the car to breathe as best as possible.