really need a tune after headers?
Melting Slicks
Joined: May 2005
Posts: 3,394
Likes: 12
From: Leon Iowa
St. Jude Donor '06-'07-'08-'09
Originally Posted by 02gt350
id love to add headers, but not the huge amount of money for tuning after just changing exhaust
Thread Starter
Le Mans Master
Joined: Nov 2005
Posts: 5,451
Likes: 2
From: East Peoria Illinois
Originally Posted by mvvette97
Some say yes but I say no you don't NEED to get a tune. I have longtubes and did not get a tune and it runs great with a ton of more umph.
Melting Slicks
Joined: May 2005
Posts: 3,394
Likes: 12
From: Leon Iowa
St. Jude Donor '06-'07-'08-'09
Originally Posted by 02gt350
any kind of power numbers?
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
I spoke to John, who owns 21st Century Muscle Cars here in Dallas, about this question. He told me that you may get 5-7 hp from good Longtube Headers without a tune and up to 30hp-with a good tune. The reason being that the PCM, reads more air flow, and therefore, creates a richer fuel mixture, which in turn does not maximize HP. This is a very well respected Shop in Dallas, Specializing in the LS-1. I too would like more input on this subject.. Experts Chime in
Last edited by David426; Aug 25, 2006 at 04:01 AM.
Instructor
Joined: Aug 2002
Posts: 237
Likes: 0
From: Gettysburg PA
To Tune, or Not To Tune
I installed LG Pros (would have used a different brand in hindsight but thats another story) last year and a Callaway Honker this Spring without a tune. The results were ho hum and I didn't notice any dramatic difference from my sop dyno.
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Melting Slicks
Joined: May 2003
Posts: 3,490
Likes: 68
From: Hewitt NJ
Originally Posted by fastdriver1
I installed LG Pros (would have used a different brand in hindsight but thats another story) last year and a Callaway Honker this Spring without a tune. The results were ho hum and I didn't notice any dramatic difference from my sop dyno.
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
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Melting Slicks
Joined: Nov 2003
Posts: 3,011
Likes: 9
From: Dublin GA
Originally Posted by fastdriver1
I installed LG Pros (would have used a different brand in hindsight but thats another story) last year and a Callaway Honker this Spring without a tune. The results were ho hum and I didn't notice any dramatic difference from my sop dyno.
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Le Mans Master
Joined: Oct 2004
Posts: 9,369
Likes: 4
From: Zephyrhills, Florida
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13
Originally Posted by fastdriver1
I installed LG Pros (would have used a different brand in hindsight but thats another story) last year and a Callaway Honker this Spring without a tune. The results were ho hum and I didn't notice any dramatic difference from my sop dyno.
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Last Monday drove up to NY for an appointment with Dr.Carmen at the 'Vette Doctors'. The car was strapped down on the dyno and the 'Doctor' began his computer surgery.
The results:
First Pull- 262 HP ,329.2 Lbs Torque (for some reason the computer was set VERY lean)
Last Pull- 346.4 HP ,354 Lbs Torque
Enough said?
Carmen is VERY good at what he does.......he's got a lot of pride in what comes out of that shop.........all the guys there do. I did a 900 mile round trip to partake of his magic!
Racer
Joined: Feb 2005
Posts: 276
Likes: 0
From: Dix Hills NY
I would say you can wait a bit, but I would do it as soon as possible. I installed a Vararam and my car ran fine until I installed SLP Loudmouths. After a couple days the CEL/MIL light came on. Reset it and came on again, running lean. Brought it to the vette doctors for a tune and gained 10hp with the tune alone. Dyno tuned at 335hp/345tq with just those two mods.
Race Director
Joined: Nov 2003
Posts: 11,061
Likes: 38
From: Menifee CA
Originally Posted by dsg049c
would a predator tune work? I am running TPIS LT, BB Exhaust with x pipe, Blackwing intake and Granatelli MAF. Did not know if I should get a custom tune or just the predator..
You will need to pay for a tune...
Instructor
Joined: Oct 2005
Posts: 128
Likes: 0
From: Largo FL
I had a tune done on mine after I installed a cat back system. I added headers at a later time and was going to tune it again but it didn't need it. Everything still looked good. The tuner would have only charged me a portion of the fee since I had already done a previous tune with him.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Hope this isn't "hi-jacking" a thread, but since it's on the lines I thought I'd ask.
I'm having Bassani long tube headers put on next week. They are replacing my shorty headers. I had a dyno tune with the short headers on. The installer where I'm having the LT put on doesn't do dyno tunes just street tunes..so if his street tuner goes in to tweak my tune for the new headers will he mess my dyno tune up? Or should I just take it back to where I had the dyno tune done and have them tweak the tune for long tube headers?
Thanks,
SC5
I'm having Bassani long tube headers put on next week. They are replacing my shorty headers. I had a dyno tune with the short headers on. The installer where I'm having the LT put on doesn't do dyno tunes just street tunes..so if his street tuner goes in to tweak my tune for the new headers will he mess my dyno tune up? Or should I just take it back to where I had the dyno tune done and have them tweak the tune for long tube headers?
Thanks,
SC5
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
Originally Posted by Sigforty
I gained 12 rwhp with a tune in my Z06. The headers gave me 18 rwhp so in the end after the tune I had 30 rwhp.
Le Mans Master
Joined: Dec 2001
Posts: 7,788
Likes: 6
From: Winchester TN
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In V Veteran
St. Jude Donor '03-'04-'05-'06-'07-'11
Originally Posted by 02gt350
id love to add headers, but not the huge amount of money for tuning after just changing exhaust
I would do the tune first, then save up for the headers.
I had my Z tuned by Ernie Francis at Breathless, and then when the folks at LG checked my tune after the headers, they said it was about as good as it gets and that was that -
I felt a huge difference in the car after the tune.
Just my two cents...
best regards -
mqqn