Is Tuning absolutely necessary after header install???
Thread Starter
Safety Car
Joined: Jul 2002
Posts: 3,874
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From: Fishing Somewhere Cold
St. Jude Donor '11-'12-'13, '15
Is Tuning absolutely necessary after header install???
Title says it all....Just curious as I will do the install myself if I can get away without the tuning. My LS1 edit info is not so readily accessable (tuner is 1.5 hours away) so just wondering how important that really is.
Drifting
Joined: Sep 2000
Posts: 1,456
Likes: 5
From: Bothell WA
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
I would say its not all that necessary. My car ran fine without any tuning. The Dyno numbers in my sig are with the stock tune in the car. The dyno does show that my car was running a little lean, so I have been tweaking the tuning with LS1 Edit. I don't have new dyno numbers yet.
- Mark
- Mark
Instructor
Joined: Dec 2002
Posts: 137
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From: miami Fl
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
I installed full KOOKS long tubes, no cats, and Z06 exhaust. Have not done any tuning and the car runs great. I am sure once i tune it will be even better but it is not absolutely necessay :party: :party:
Melting Slicks
Joined: May 2003
Posts: 3,494
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From: McKinney Tx
Cruise-In V Veteran
St. Jude's Donor '05
Re: Is Tuning absolutely necessary after header install??? (ddv005)
:iagree: I just had mine installed and havent done any tuning either. But beware. I had a damn plug wire jump on me. Threw a code and kinda freaked me out. The great thing is I posted here on the forum and got pointed in the right directon pretty fast. :cheers:
Thread Starter
Safety Car
Joined: Jul 2002
Posts: 3,874
Likes: 0
From: Fishing Somewhere Cold
St. Jude Donor '11-'12-'13, '15
Re: Is Tuning absolutely necessary after header install??? (Rob'sC5)
Sounding like I will be installing them myself! Thanks for the info :cheers:
Oh BTW can I get it high enough with jackstands to do the job or better yet would my rhino ramps be high enough??
Oh BTW can I get it high enough with jackstands to do the job or better yet would my rhino ramps be high enough??
Burning Brakes
Joined: Jun 2002
Posts: 1,055
Likes: 0
From: Troy MI
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
I did mine on rhino ramps, on my car it ran very rich before I got it tuned. But I also installed the headers and the cam about the same time, so it probably depends on your mods ect
Before the tune my car showed almost no noticable improvement from the headers.
Before the tune my car showed almost no noticable improvement from the headers.
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
Re: Is Tuning absolutely necessary after header install??? (Cobra4B)
i think tuning is not necessary after u install the headers but it will help i have not had my car tuned yet & i have a set of patriot heads & lg tube headers & the car runs fine i will get a tune soon kinda waiting for my transgo shift kit to be installed first
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Supporting Vendor
Joined: Mar 2002
Posts: 2,073
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From: Loveland CO
Re: Is Tuning absolutely necessary after header install??? (ddv005)
It is not necessary to have tuning done after header instal but I would recommend it. Tuning insures that you are getting every horsepower out of your mods. Kaley
Burning Brakes
Joined: Sep 2003
Posts: 764
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From: South Florida
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
Be prepared to:
Remove Starter, Pass.Valve cover completely, Driver Coils Completely, THe manifolds are a PITA to remove, Protect your fenders all around before you start, And if I remember Driver from bottom and Pass. from Top.
All C5's are alittle different though the instructions are not detailed enough.
I used a lift (FIL is a Mech, so l use his lift) Air tools help alot, and plan on MIn.5 Hours........
Good luck!
Yes the LG OR 3"
Remove Starter, Pass.Valve cover completely, Driver Coils Completely, THe manifolds are a PITA to remove, Protect your fenders all around before you start, And if I remember Driver from bottom and Pass. from Top.
All C5's are alittle different though the instructions are not detailed enough.
I used a lift (FIL is a Mech, so l use his lift) Air tools help alot, and plan on MIn.5 Hours........
Good luck!
Yes the LG OR 3"
Instructor
Joined: Aug 2003
Posts: 233
Likes: 0
From: Batesville AR
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
Recently installed LG LT's with the 3" X and down pipes in an 02 A4...it ran so rich that it made your eyes water! Had it tuned at the winter bash in orlando and picked up 20hp 310 to 330 and 30 ft/lbs of torque 320 to 350. WHAT a difference!! :hurray:
Instructor
Joined: Sep 2003
Posts: 147
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From: mission b.c.
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
had slp headers + 3 hiflo.cats installed on saturday.monitored 02 sensors on
my predator at about 775 to 850 mv which is slightly leaner than before 825 -900mv. the car ran a lot stronger afer install so i won't bother with dynotune.
one thing i have noticed is that after driving it over 100 miles ,fast city driving and some rural roads,is that the engine seems to be smoothing out and the ltft and 02 sensor readings seem to be more stabilized (they were jumping all over on the predator scan for the first few miles)
my predator at about 775 to 850 mv which is slightly leaner than before 825 -900mv. the car ran a lot stronger afer install so i won't bother with dynotune.
one thing i have noticed is that after driving it over 100 miles ,fast city driving and some rural roads,is that the engine seems to be smoothing out and the ltft and 02 sensor readings seem to be more stabilized (they were jumping all over on the predator scan for the first few miles)
Supporting Vendor
Joined: Oct 2002
Posts: 50,279
Likes: 518
From: Cleveland OH
St. Jude Donor '11,'13
Re: Is Tuning absolutely necessary after header install??? (sweetcharity)
if you tune with ls1 edit . you will probally pick up 10 to 15 rwhp plus tq . but thats $500.00
Platinum Supporting Vendor
Joined: Feb 2000
Posts: 3,777
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From: Raleigh NC
Re: Is Tuning absolutely necessary after header install??? (stunna)
Some cars run fine and set no codes, others need help with some tuning and/or simulators. Mine sets codes occasionally. I reset them by hand and they go away. I can't be sure if the headers caused this or the high flow cats. If I had to guess it would be the cats and not the headers.
Drifting
Joined: Aug 2003
Posts: 1,751
Likes: 3
From: Ventura, CA Fight On Forever
St. Jude Donor '03-'04-'05
Re: Is Tuning absolutely necessary after header install??? (Redshift)
The Air/Fuel Ratio needs to be adjusted for maximum performance and fuel economy. I did gears on an A4 along with LTs, so the LS1 edit was a must. A/F ratio was running rich after LTs before the tuning, now perfect.
mtv :thumbs:
mtv :thumbs:
