![]() |
#1 |
![]() Join Date: Apr 2012
Location: TEXAS
Posts: 171
|
![]()
After months of waiting for some headers to be made I decided a different route and purchased some SW with high flow cats and thermal coating.
I plan on doing the install ( wish me luck or advice, I'll take both ) ![]() My question is: what is the value and typical gain from getting the car tuned after my headers are installed? Thx FS
__________________
1966 Mustang GT tribute 1988 Callaway Twin Turbo Aerobody (FOR SALE pm me for more info) 1991 Callaway CR1 SuperNatural 475 Aerobody 1992 Callaway SuperNatural 435 Aerobody (sold) For Sale: |
![]() |
![]() |
![]() |
#2 | |
Banned
BANNED
Join Date: Oct 2006
Location: MD
Posts: 3,690
|
![]() Quote:
Congrats!!!! Expect 20 to 25 rwhp with headers. (A little less with cats) ![]() David |
|
![]() |
![]() |
![]() |
#3 |
![]() ![]() Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
|
![]()
Not knowing your AFR ratio at WOT before installing headers is rolling the dice a bit. I experienced a suprise lean condition at WOT when I first bought the car. So, I'd at least have Marc or someone burn you a chip calibrated for an additional 25 hp - just to be on the safe side.
As for realizing max potential, a dyno session is probably the only way you'll know if you're getting the most out of the system. I'd make a point of getting it tuned soon as possible after you install the headers. P.
__________________
Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
![]() |
![]() |
![]() |
#4 |
![]() Join Date: Apr 2012
Location: TEXAS
Posts: 171
|
![]()
Thanks for the replies.
Seems my question was a bit confusing. I am Interested in understanding how critical it is to retune my car after the headers are installed. Most cars come from the factory on the rich side... I was curious if the headers leaned it out a bit and still be on the safe side or now it's too lean hence the need for a retune. Is it possible to just send my chip off for a reburn to account for the headers or should I go thru another Dyno tune session? Thanks FS
__________________
1966 Mustang GT tribute 1988 Callaway Twin Turbo Aerobody (FOR SALE pm me for more info) 1991 Callaway CR1 SuperNatural 475 Aerobody 1992 Callaway SuperNatural 435 Aerobody (sold) For Sale: |
![]() |
![]() |
![]() |
#5 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
|
![]()
Not getting your tune right after a header install can invoke Knock Retard due to a lean condiiton depending on state of tune . So you won't see the full benefit of better exhaust since the ECM will be dialing back the timing a bit. Part throttle also needs tweaking to optimize for the change in backpressure.
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
![]() |
![]() |
![]() |
#6 |
Join Date: Aug 2005
Location: Scottsdale, AZ
Posts: 2,450
|
![]()
Marc can burn you a "generic" header chip with any other mods, but a dyno session will put you closer to max potential
|
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|