Which Long Tube Headers...help

[Voodooo]

I'm telling you from experience and owning the very ARH system that their is no vibration. I wouldn't lie about it because I have no reason to. I know I'll get slack for saying this. But the ARH is made from .065 tube not .049 tube. That also cuts down on any vibrations that could of been with thinner wall tube. Also some with the off road stock header pipes have reported vibrations with that system. Could be bad fuel. I know of at least 3 others with the ARH long tubes and they all agree no vibrations. Don't think that if the system vibrated at 3000 or 8250 rpm it wouldn't be felt! If I felt any vibrations at all I would of reported it. Not only myself but other members on other forums used the ARH and so has ARH on their in house GT350. I'm not here to tell anyone how or where to spend your hard earned money, but I can tell you without a doubt their is no vibrations.

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[Myshelby3425]

What are the performance advantages of a stepped header like kooks vs the ARH which uses same diameter to the collector?

 

[Voodooo]

I believe the ARH made more hp and tq. From what I see on this forum the kooks made 15 hp over stock with cats using stock mufflers. The ARH made 30 hp over stock also with stock mufflers and no cats. And 29 hp over stock with cats and stock mufflers.

 

[superman07]

Scott, there is no doubt that if you had my level of vibration you would notice it. I'm going to run more of the gas out of it today and continue topping it off with higher octane. I plan to run a data log today to check and see if I have gotten rid of knock entirely. BP Contacted me and wants to discuss where I got the fuel. Unfortunately Ohio doesnt test and I have had experience with shit gas for many years in both turbo car and truck applications so I know how easy it is to pay for 93 and get sh%^

 

[Voodooo]

Scott, there is no doubt that if you had my level of vibration you would notice it. I'm going to run more of the gas out of it today and continue topping it off with higher octane. I plan to run a data log today to check and see if I have gotten rid of knock entirely. BP Contacted me and wants to discuss where I got the fuel. Unfortunately Ohio doesnt test and I have had experience with shit gas for many years in both turbo car and truck applications so I know how easy it is to pay for 93 and get sh%^

I completely agree Kris. Keep us posted.

 

[Stuntman]

I believe the ARH made more hp and tq. From what I see on this forum the kooks made 15 hp over stock with cats using stock mufflers. The ARH made 30 hp over stock also with stock mufflers and no cats. And 29 hp over stock with cats and stock mufflers.

While dynos should be used to compare deltas and not outright #s themselves (especially comparing different dynos), the ARH's baseline was suspiciously ~15 hp lower than the baseline of Kook's and various other dynos. So the peak power was about the same between Kooks & ARH.

Bench racing will never end until there's an A-B-C test on the same car, dyno, day, and weather conditions; or at least finding out what the temp & humidity was for the baseline & post-header pulls were from both companies.

You can't feel the damage causing 2nd & 3rd order vibrations. The Voodoo does not really have 1st order vibrations that you can feel and that shake the car.

 

[stanglife]

While dynos should be used to compare deltas and not outright #s themselves (especially comparing different dynos), the ARH's baseline was suspiciously ~15 hp lower than the baseline of Kook's and various other dynos. So the peak power was about the same between Kooks & ARH.

Bench racing will never end until there's an A-B-C test on the same car, dyno, day, and weather conditions; or at least finding out what the temp & humidity was for the baseline & post-header pulls were from both companies.

You can't feel the damage causing 2nd & 3rd order vibrations. The Voodoo does not really have 1st order vibrations that you can feel and that shake the car.

They are both good quality headers. I cant see them being that far apart, performance-wise. Out of principle, I might choose the header manufacturer that seems to be the most realistic about the power numbers and that thinks the design of their header through, the first time.

FYI - to my knowledge, Kooks also uses the thicker-wall tubing.

 

[Stuntman]

I just realized out that Voodoo compared an SAE baseline to an STD header & tune pull, which is VERY inaccurate:

http://www.mustang6g.com/forums/showpost.php?p=1209701&postcount=206

So the ARH did NOT make 30whp over their stock baseline. FWIW, the Kooks pull would be ~13whp higher if looking at their pull using the STD correction factor (494whp STD).

 

[LethalPerformance]

IN STOCK AND NOW SHIPPING!!



http://www.mustang6g.com/forums/showthread.php?p=1213045#post1213045

 

[Voodooo]

I just realized out that Voodoo compared an SAE baseline to an STD header & tune pull, which is VERY inaccurate:

http://www.mustang6g.com/forums/showpost.php?p=1209701&postcount=206

So the ARH did NOT make 30whp over their stock baseline. FWIW, the Kooks pull would be ~13whp higher if looking at their pull using the STD correction factor (494whp STD).

You need to look again on the other thread. You're mistaken

 

[Myshelby3425]

I just realized out that Voodoo compared an SAE baseline to an STD header & tune pull, which is VERY inaccurate:

http://www.mustang6g.com/forums/showpost.php?p=1209701&postcount=206

So the ARH did NOT make 30whp over their stock baseline. FWIW, the Kooks pull would be ~13whp higher if looking at their pull using the STD correction factor (494whp STD).

Voodoo isn't the only one with ARH headers to make near 30.

 

[Stuntman]

You need to look again on the other thread. You're mistaken

Not really when you used two different correction factors. I'd guess your gains are closer to 20whp while the Nick's 30whp gains with HFCs on a Mustang dyno is really impressive but it didn't show the conditions.

I'm looking forward to seeing your proper Watson overlays & other's results of ARH & Kooks.

 

[Voodooo]

Not really when you used two different correction factors. I'd guess your gains are closer to 20whp while the Nick's 30whp gains with HFCs on a Mustang dyno is really impressive but it didn't show the conditions.

I'm looking forward to seeing your proper Watson overlays & other's results of ARH & Kooks.

You do realize that the long tubes and no cats leaned my car out correct? You can't just add something without a tune and expect a accurate gain or loss. After noticing the sae and std graphs I honestly say I didn't notice it. The AFR, temps, humidity, engine temps, etc all play a factor. If you notice my ambient air temps and humidity are VERY close as you can get from not being the same day on both stock and header dyno days. Now go look at the Kooks dyno temps and humidity readings. Kooks has the upper hand with lower ambient temps on the header dyno pulls at a 16 f degree reduction in temps. That's a gain there. ARH long tubes have made 25+ hp increases on all testing.

 

[Stuntman]

I said all of that in my post #227 in the ARH thread.

Wasnt your 511hp pull the one that was lean & was stopped short of redline? IIRC, your non tuned header pull went to redline and I don't recall but don't remember it or Kooks having an issue with the stock tune.

Is there someone else other than you and Nick who've back to backed the ARH?

 

[Voodooo]

I said all of that in my post #227 in the ARH thread.

Wasnt your 511hp pull the one that was lean & was stopped short of redline? IIRC, your non tuned header pull went to redline and I don't recall but don't remember it or Kooks having an issue with the stock tune.

Is there someone else other than you and Nick who've back to backed the ARH?

Yes on the Svt forum.
Do you know Anyone with kooks that has more dyno pulls? I'm only aware of one.
Have you noticed my temps and humidity compared to the kooks dyno pull temps? Mine are very consistent. I'm only aware of one dyno test with kooks. And in that dyno test the difference in temps from baseline to header pulls is a 16 degree difference. With the header day dyno pulls being cooler on the kooks.
At least 4 with ARH and all are 25-30hp gains with just headers and stock mufflers.
Yes I stopped at 6000 rpm due to a lean tune. But my car along with others have reported lean stock tunes. But I also had a lean Lund tune. Even with the stock tune I have a video clip that you can clearly hear it spark knocking. I'll try to post the video, but since tapatalk isn't acceptable here anymore it'll be hard.

The bottom line is that what ever brand of header one chooses it will make more power over stock. Some more then others. I'm happy with my headers and results. When I get the time to finish tuning and find time to get back to Watson I'll post more results then.

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