longtube headers which size
This is a discussion on longtube headers which size within the Firebird / WS6 forums, part of the Vehicle Specific category; Is there much of a price difference between 1-3/4 and 1-7/8?...
12-29-2015, 08:03 PM #21
Is there much of a price difference between 1-3/4 and 1-7/8?It's stock.
12-30-2015, 05:42 AM #22
12-30-2015, 08:21 AM #23
12-30-2015, 08:35 AM #24
I hear from tons of people that back-pressure is a myth...
12-30-2015, 11:18 AM #25
I am a bit more conservative in my typical driving than the average guy in these cars but I will tell you that the torque has moved up since the exhaust install.
12-30-2015, 12:05 PM #26
well of course there will be an increase going from stock to your setup but from 1 3/4 to 1 7/8 I don't think any human could detect a difference
12-30-2015, 03:34 PM #27
- Join Date
- Feb 2009
- Mansfield, PA
Black & Blue
- '02 WS.6 / '07 Suburban
Scott - did you get a post-install tune?
01-02-2016, 02:21 PM #28
Depending on if I get the promotion/payraise that I am in line for, I might do the heads/cam this summer and do the tune then. I got the impression it would just run a little richer w/o the tune, was I incorrect?
01-03-2016, 01:22 PM #29Lid, Throttle Body, LS6 Intake, Stage 1 Heads, Mild Cam, Magnaflow Cat-Back, LS7 Clutch, SFCs, STB, Panhard Bar, Strano Springs, Strano Sway Bars, LCAs, Konis (F), Bilstiens (R), MGW Shifter
01-11-2016, 10:52 AM #30SLP Air Lid/Smooth Bellows
Kooks Emissions LT Headers/Catted Y pipe
Walbro 255 fuel pump
UMI Rear Lower Control Arms/ Adjustable Panhard Rod
Factory C5 Z06 17x9.5 wheels w/ 285-40-17 Continental Extreme Contact DW's all the way around.
Dyno Dynamics dynoed @:
356 rwhp, 360 rwlb/tq
01-11-2016, 12:55 PM #31
That's correct. A tune is not necessary after a header install. It will however adjust the AFR and add more hp/tq if tuned.
01-11-2016, 05:32 PM #32
01-11-2016, 06:38 PM #33
Sounds good. Just remember that you'll trigger an SES light until you get it tuned so don't freak out when you see it lit up.
01-12-2016, 03:07 PM #34
01-12-2016, 06:58 PM #35
Hold on, was your question about a tune after headers, or after heads/cam? My answer was addressing after headers, but looking back at your question you might have been referring to something else.
01-13-2016, 10:52 AM #36
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