here is my Conversation with tony about them..

ME
im sure I already know the answer but have to ask.. does the 370z Long tube headers fit on the g37..
I have a 2011 sedan with the 7at

Tony
They fit on the G37 Coupe but yet to confirm they fit on the G37 Sedan. I would assume that they fit but have never done an install nor has any customer confirmed to me that they fit.

 

well guys I found a killer deal on some FI long tube headers..i guess ill be the test dummy and see if they will fit the sedan..im going to try for an install next month when I get the gears done..so ill update if it works out!

 

Nice! These longtubes elimimate the cats right?

 

Correct, the FI LTH's fully delete the OEM manifold and cats. They still keep the CEL 100% off as well.

I personally was at the shop and watched a set be built(2 full days, and then we did the full install on that Friday). Its amazing the man hours and the amount of labor that are actually put into building them. There's a reason why they've to this day, never had a report of a set cracking. They truly believe in their products (proven with the lifetime warranty offered on all welds and craftsmanship as long as you are the original owner)

 

1CleanG .. Can you get me a better offer on those than whats listed on Tony's website ?!
If so then i may contact you and place an order .. but first i will have to wait for Chuckie's feedback as i drive a sedan too but 08 G35

One more thing, could you plz post a before/after dyno sheet ? just wanna check where they do put the power at.
Thank you in advance..

 

In for results, you will be the first. I wish that I had the time over the years or I would of already been able to confirm this one way or the other. I guess I also just figured most people with a Sedan have no desire to go to the extreme of running long tube headers!

Thanks, Tony

 

Tony if my tuner cant get it done on the day i get my gears i will be giving you a call today to see if you can fit me in when im down there to see if they fit..

 

Well everyone will have to wait a few months longer...couldnt fit the install in Oct when i go down for my gears since it such a long job.. so First week of December is when ill be heading down to get them installed..Might be some good news as Seb at Specailty Z said they should Fit without a problem...Stay Tuned!

 

 

1CleanG, what is the net WHP gained from the LTHs? I've heard low numbers from both the Fast Intentions and Stillen headers, making it hard to justify the amount of $cratch.

 

i have them, i didn't do a dyno but i can feel there is an increase in power in the mid-range RPM , i don't regret buying them at all

only thing is, i want to figure out if they clear and work well with a supercharger! , i don't think anyone did forced induction with a LTH.

 

There are many advantages to the Fast Intentions LTH's. First, the craftsmanship. I personally have seen Tony himself build a set from beginning to end. The amount of man hours put into them, and the physical treatment they give them is simply 2nd to none. There IS A REASON why Fast Intentions has NOT had a single set of LTH's crack/fail.

With the headers installed on the 370z (same engine & part), there are gains of about 15 WHP and 18 ft/lbs of TQ. When you're talking about daily driving around town, this is where you will truly feeeeeel those low end gains immediately.

We also recently had a G37 coupe customer install the LTH's paired with our SS catback with 12" resonators and Gen3's, helping him hit the 330 WHP club!

The LTH's are also 17 lbs lighter then the OEM manifolds/cats.

 

ok everyone i know its been awhile but ill finally have these installed in April on the 10th.. so we will see if there are any fitment issues or anything else..if everything fits ill post up the dyno as well..

 

sorry guys I sold the headers.... Changed my mind and going Supercharged instead...

 

No emissions testing in Florida... But I don't think I would want to install those. Way too much trouble.