Long Tube Headers
Thread Starter
Instructor
Joined: Apr 2009
Posts: 231
Likes: 0
From: Ont
Long Tube Headers
This is in regards to an '05 GTO but haivng the LS2 I thought Id get your opinons here too.
First I will say I am going about this a bit backwards but plans somethimes change.
I originally hadnt planned on many mods and had just put on shorty headers and had a dyno tune done. It made decent power but you all know about the addiction. lol
Anyhow this past summer I had a small cam put in and another tune. It made 390 rwhp and I starting kicking myself for not using LT's in the first place.
So I have bought some LT's with catted mids and willl have them on in a few weeks.
Questions: How far off will the tune be that I am running now?
How much more power do you think I should make with the LT's on?
The exact mods are cam 224/224 580/570 112LSA with a ported stock intake.
First I will say I am going about this a bit backwards but plans somethimes change.
I originally hadnt planned on many mods and had just put on shorty headers and had a dyno tune done. It made decent power but you all know about the addiction. lol
Anyhow this past summer I had a small cam put in and another tune. It made 390 rwhp and I starting kicking myself for not using LT's in the first place.
So I have bought some LT's with catted mids and willl have them on in a few weeks.
Questions: How far off will the tune be that I am running now?
How much more power do you think I should make with the LT's on?
The exact mods are cam 224/224 580/570 112LSA with a ported stock intake.
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
Most people claim that shorties are only worth around 5 hp. Long tubes are worth around 25. So you should pick up around 20 hp. I really doubt that your tune will be that far off, but if you want to optimize your power I'd get your tune tweaked.
Thread Starter
Instructor
Joined: Apr 2009
Posts: 231
Likes: 0
From: Ont
It is an A4 car. Currently it has JBA Shortys on it--I am switching to Kooks LT's.
Does anyone know if the tune which was written using HP Tuners can be tweaked using a Predator Handheld?
Does anyone know if the tune which was written using HP Tuners can be tweaked using a Predator Handheld?
Last edited by Canadian_Goat; Sep 19, 2010 at 05:52 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Unless the tune is locked, yes, you can use predator to adjust the tune.
I do not know how effective it will be. You will need to adjust LTFT and maybe the VE tables. To do it correctly, you will need a wide band to see what your WOT AFR's are and adjust the PE tables accordingly.
The tuner I use will readjust my tune for free when I make MODIFICATIONS. Chuck COW at Corvettes of Westchester.
I have never used predator and don't know what all it will adjust but, its NOT going to be any where near as versatile as HP Tuners or EFI Live
I do not know how effective it will be. You will need to adjust LTFT and maybe the VE tables. To do it correctly, you will need a wide band to see what your WOT AFR's are and adjust the PE tables accordingly.
The tuner I use will readjust my tune for free when I make MODIFICATIONS. Chuck COW at Corvettes of Westchester.
I have never used predator and don't know what all it will adjust but, its NOT going to be any where near as versatile as HP Tuners or EFI Live
Melting Slicks
Joined: Feb 2004
Posts: 3,307
Likes: 111
From: Tucson AZ
Kooks and American Racing are the best headers available. How much horsepower you gain is going to be a result of how bad/good your JBA shortys are.
I have used the Diablo Predator. Bill's right, as long as your tune isn't locked you can log some runtime and make adjustments. You will need to download the programs associated with it. If you haven't already done it, you may need to turn off the codes from the rear cats (you will also need O2 extension wires with long tubes).
I have used the Diablo Predator. Bill's right, as long as your tune isn't locked you can log some runtime and make adjustments. You will need to download the programs associated with it. If you haven't already done it, you may need to turn off the codes from the rear cats (you will also need O2 extension wires with long tubes).
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Thanks Bill.
Unless the tune is locked, yes, you can use predator to adjust the tune.
I do not know how effective it will be. You will need to adjust LTFT and maybe the VE tables. To do it correctly, you will need a wide band to see what your WOT AFR's are and adjust the PE tables accordingly.
The tuner I use will readjust my tune for free when I make MODIFICATIONS. Chuck COW at Corvettes of Westchester.
I have never used predator and don't know what all it will adjust but, its NOT going to be any where near as versatile as HP Tuners or EFI Live
I do not know how effective it will be. You will need to adjust LTFT and maybe the VE tables. To do it correctly, you will need a wide band to see what your WOT AFR's are and adjust the PE tables accordingly.
The tuner I use will readjust my tune for free when I make MODIFICATIONS. Chuck COW at Corvettes of Westchester.
I have never used predator and don't know what all it will adjust but, its NOT going to be any where near as versatile as HP Tuners or EFI Live
(always here...
)Chuck CoW
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Thread Starter
Instructor
Joined: Apr 2009
Posts: 231
Likes: 0
From: Ont
Kooks and American Racing are the best headers available. How much horsepower you gain is going to be a result of how bad/good your JBA shortys are.
I have used the Diablo Predator. Bill's right, as long as your tune isn't locked you can log some runtime and make adjustments. You will need to download the programs associated with it. If you haven't already done it, you may need to turn off the codes from the rear cats (you will also need O2 extension wires with long tubes).
I have used the Diablo Predator. Bill's right, as long as your tune isn't locked you can log some runtime and make adjustments. You will need to download the programs associated with it. If you haven't already done it, you may need to turn off the codes from the rear cats (you will also need O2 extension wires with long tubes).
Ill log some data after i get them put on.
