Lg Long Tubes
Thread Starter
Instructor
Joined: Jun 2000
Posts: 106
Likes: 0
From: canada
Lg Long Tubes
Hey...i just finished with the long tube install on my 02 c5 vert....fit and finish is awsome.
Just wonderin if i should tune the car after the longtubes?
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
Just wonderin if i should tune the car after the longtubes?
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
Melting Slicks
Joined: Dec 2004
Posts: 2,322
Likes: 2
From: New York NY
Cruise-In VI Veteran
St. Jude Donor '05
Of course, if you want maximum gains you should tune after every performance mod. The only issue is cost. Many recommend waiting until all of your mods are complete in order to save costs on tuning. You will be running rich after your headers are installed. You will be able to squeeze out more hp by optimizing your Air/fuel ratio among other things. Enjoy your headers, I love the mean sound.
Burning Brakes
Joined: Feb 2004
Posts: 831
Likes: 0
From: Country Boys Can Survive.
The good thing about getting it dyno-tuned is you can post the results and we can pick-apart your performance increases and start another heated debate about the virtues of different header brands. 
Pro
Joined: Apr 2004
Posts: 565
Likes: 0
From: St. Louis MO
Originally Posted by loudsam
The good thing about getting it dyno-tuned is you can post the results and we can pick-apart your performance increases and start another heated debate about the virtues of different header brands.
Team Owner
Joined: Jul 1999
Posts: 50,808
Likes: 10
From: Buy USA products! Check the label! Employ Americans
Originally Posted by loudsam
The good thing about getting it dyno-tuned is you can post the results and we can pick-apart your performance increases and start another heated debate about the virtues of different header brands.
No debate LG's rule
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Racer
Joined: Oct 2003
Posts: 389
Likes: 1
From: Denver co
On my 02 coupe MN6 I installed the LG LT pro with X pipe, no cats, no muffler (straight pipe), the Vararam, and never went for tuning.
I had the the check engine light on since the LG.
My Dyno show 356RWHP and 377RWTQ.
Fllowing this number I'm not sure the dyno that will cost $500 will give me a lot of more. Except removing the check engine light.
The AF ratio is also very good.
I had the the check engine light on since the LG.
My Dyno show 356RWHP and 377RWTQ.
Fllowing this number I'm not sure the dyno that will cost $500 will give me a lot of more. Except removing the check engine light.
The AF ratio is also very good.
Racer
Joined: Oct 2003
Posts: 389
Likes: 1
From: Denver co
Originally Posted by zoomn8r
How long did it take you to install the LG's and how much trouble was it?
The only real problem was to raise the car more than 20".
I lost at least 2 hours to do this and a good hour to have the headers to go through. Except this everything is well documented and easy.
I higly recommend to coat them it will remove some heat especially around the spark plug wires.
Safety Car
Joined: Jun 2004
Posts: 4,353
Likes: 22
From: Bella Vista Ca
Originally Posted by zoomn8r
How long did it take you to install the LG's and how much trouble was it?
Racer
Joined: Oct 2003
Posts: 389
Likes: 1
From: Denver co
Originally Posted by Mike04
It took me about 8 hours working at a normal pace to install them. I have a little experience working on the car though.
I had the problem to optain the 20" lift.
I did it in three weeks working 1 to 2 hours at a time.
Thus explain why the total is 20.
If you start early in the morning and have evrything prepare (read LS1 how to 3 to 4 times before)I think you should be able to be done by the evening
Burning Brakes
Joined: Apr 2003
Posts: 789
Likes: 0
From: BF Egypt Tx
Originally Posted by 355vortechC4
Just wonderin if i should tune the car after the longtubes?
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
Congrats on your install!
Thread Starter
Instructor
Joined: Jun 2000
Posts: 106
Likes: 0
From: canada
Thanks for the info guys....looks like for now this will be the last mod for the c5....till i can save up doe for a charger.
Im gonna give her a tune this friday and will post up some numbers.
Car runs great with out the tune and sounds INSANE!!!!!!!!!!!!!!!!
Im gonna give her a tune this friday and will post up some numbers.
Car runs great with out the tune and sounds INSANE!!!!!!!!!!!!!!!!
Melting Slicks
Joined: Sep 2003
Posts: 2,911
Likes: 1
From: Augusta GA
St. Jude Donor '05-'06
Originally Posted by 355vortechC4
Hey...i just finished with the long tube install on my 02 c5 vert....fit and finish is awsome.
Just wonderin if i should tune the car after the longtubes?
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
Just wonderin if i should tune the car after the longtubes?
I have hp tuner ready to go....car has bb cat-back,vararam b2 intake,tb,msd wires.
Thanks for any help.
Congats again!Dave
Burning Brakes
Joined: Jan 2004
Posts: 896
Likes: 1
From: Overland Park KS
I just did an LGM install myself, about 3 weeks ago. Best mod yet! I will be having the car tuned at the end of April to get the most gains. If this is your last mod for a year or so then I'd go ahead and get it tuned, if you can swing it.
Here's are my posts regarding my LGM install:
http://forums.corvetteforum.com/show....php?t=1057322
http://forums.corvetteforum.com/show....php?t=1067338
After my header install the car wound up running slightly rich (12.7) and the PCM is detecting detonation (knock;false or not). Because of this my post-header install peak dyno numbers were only 334rwhp/354rwtq. The torque gains in the lower RPMs are awesome however! I'm hopeful that tuning will take care of the knock issues and push me into the 350rwhp/365rwtq range.
Here's are my posts regarding my LGM install:
http://forums.corvetteforum.com/show....php?t=1057322
http://forums.corvetteforum.com/show....php?t=1067338
After my header install the car wound up running slightly rich (12.7) and the PCM is detecting detonation (knock;false or not). Because of this my post-header install peak dyno numbers were only 334rwhp/354rwtq. The torque gains in the lower RPMs are awesome however! I'm hopeful that tuning will take care of the knock issues and push me into the 350rwhp/365rwtq range.
Instructor
Joined: Feb 2005
Posts: 161
Likes: 0
From: Keller TX
Originally Posted by CNB
That is exactly what will happen. 
Allot of guys have said the same thing about LG, but all being said, I DO LOVE MY LONGTUBE HEADERS and I wouldn't change the combo I'm running for anything. I think I will stick with my buddy tuning my car from now on though. he doesn't blow smoke up my a$$.
Regards, Bryan