kdejac

I have seen tons of threads on long tube headers but I have not seen any that compare the headers for low end torque.


I have a 2014 A6 Z51 all stock except for a CAI and I am looking to add some long tube headers and possibly a tune. I am most interested in the low end torque.


I was going to go with the Kooks but the LG stepped seem to have better low end torque


Any suggestions or can someone point me to a thread that has a comparison?

Kracka

I think you are correct regarding the LG's, they specifically mention the stepped design helps with the low-end.

blown81bu

ARH headers 1 3/4 Long tubes hands down

kdejac

Any data points that support this or...just "butt in the seat" data

blown81bu

No butt data
Hows track data?
Wont be long i will be at dragstrip to find out....

There is not much difference in size more preference

Kracka

This testing on the LT1 shows 1 3/4" is NOT the way to go vs. 1 7/8.

http://www.camaro6.com/forums/showthread.php?t=439962

robert miller

I did the LG step down from them those and the mid pipe also back cats off the car. It did make a diff by the seat driving the car.

lakemg

If/when I buy headers, it will be Kooks 1 7/8. Had them on my Pontiac G8 GT and they were awesome. Great fit and finish. A regional tuner that has installed many headers on C7s said that the Kooks fit a little better than the LG, but I'm sure that you can't go wrong with Kooks, LG, or ARH. All great options...

robert miller

I have had both LG and KOOKS on the c5 in a 2 inch header with the way the guy told me one big one after the other. I will never buy KOOKS again. Not to say in the smaller tube in them fit very good just don't like a guy to tell me from kook these 2 inch headers are the newer one's will not have any problem with the A/C lines & cost me almost 200.00 to get the A/C line cut and moved. Header tune rode right on it. Plus after 2 diff calls and talking to them they wouldn't do nothing at all about it.

I really don't know who your guy is but I have LG on my c7 just don't see the kooks fitting any better than the LG at all. I do all my work now on the c7. I have the LG LT headers mid pipe, cold air box, afe T.B. spacer, ported intake, ported T.B. Plus a catch can on the car. With a trinity hand tune on it.

Yes plus I did talk to KOOKS on the problem of the A/C line before buying them was told would ship out the new up dated one's then didn't do it.. Robert

mracer14

You might also look at Headers manufactured by Billy Boat Performance Exhaust Company. Great quality and craftsmanship.

thrilled

I had also heard for low end torque 1+3/4 long tube would be the way to go.With 1/4 mile and over I have heard 1+ 7/8. As far as the headers,I have read ARH is the way to go.

OLD_GOAT

I started getting headers with my 2005 Pontiac GTO, through my G8 GXP, and a 2013 Mustang GT.

With both Pontiacs the general consensus was the American Racing and Kooks were neck to neck in the best category. I guess it's where you get the best buy. Right now in the garage I have a brand new set of Kooks 1 7/8 with a catted X pipe that I will install in the spring. My installer bought the headers for me and both chose ARH, but both installers stated that in their opinion Kooks was just as good.

I was real close to getting a set of Texas Speed headers, real close, but Maryland Speed came up with a really great deal.

With the Mustang GT I went with BBKs as they were the cheapest (by far) and I knew I wouldn't be in the car long term.

I don't know anything about any headers for my Vette outside of Kooks and ARH, however I bought the Kooks from Maryland Speed on Black Friday for a great deal that none of the ARH sellers couldn't get anywhere near a matching price.

This is just my 2 cents worth, however there are headers that I don't think are the class of Kooks and ARH and on my $64,000 car there is no way I'll go with a lesser class of headers. Most especially those made in China that are very cheaply made and a carbon copy of American made headers. The Mustang yes, this car no.

WKMCD

FWIW: I went with AR 1 3/4 on this car. I make 540RWT with most of that by 3k RPM.





I do have an Edelbrock blower strapped on top though.

C7-Beast

ARH 1 3/4 and made 696 RWHP/623 ft lbs tq

ECS, Alky, Headers, Tune

blown81bu

Dam man!!!..they dont work

Who tuned that?

jacksnorm

I ran 11.3@122mph 1/4 with ARH 1 3/4" catted on 93oct tuned. Then switched to E85 tuned and ran 11.0@125mph.

BooSSted

No mention of TSP?? Surprising!
You really need to look at your application, N/A and forced induction paths can be different. If staying NA I wouldn't recommend 2" headers for the very reason your posting. TSP and a few others have posted dyno comparisons of their setups. The differences to same diameter primaries is very slight. Budget, quality and availability should be a higher concern.

Jason 98 TA

I think you guys are forgetting the TSP headers & the extra long primaries. There's no doubt the long primary design makes tons of low end torque. That's the exact reason we went with this design. Its way harder to manufacture compared to the shorter long tubes on the market, but when we dyno developed them it was quickly noticed that we wanted to go with this design.

The result is the longest header available for the C7. Notice how the collector is so far back that we were required to make a aftermarket aluminum plate to clear the primaries & collectors.

http://www.texas-speed.com/p-5091-te...ed-x-pipe.aspx

kdejac

Jason, what kind of HP/TQ increase do you see with the NA C7's with this setup?

Jason 98 TA

That's a trick question because so many manufacturers on this site have claimed completely stupid gains. Nobody is making 40hp gains. Trust me I side by side tested ours with all the major players when the car first came out.

What I can tell you is the headers made more power early & virtually identical peak power compared to the next best header available.