Y-pipes, cats and dropping weight CARD style - Fourth Generation Pontiac Firebird (1993 - 2002) - Firebird Nation

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Y-pipes, cats and dropping weight CARD style


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#1 SoCalTA

SoCalTA

    Firebird Oil Changer

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Posted 02 July 2020 - 03:53 PM

Hey Guys ...

 

I'm getting ready to reassemble my car, now that my headers are re-coated and I remember when I was taking the y-pipe off with the cat that it was pretty heavy.  I have a Borla set up from the cat back .... and so I was wondering if any of you have any recommendations on a CARB legal "Y" pipe that might give me more performance and not weight so damn much ....

 

Thanks

 

Jorge 



#2 Injuneer

Injuneer

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Posted 02 July 2020 - 06:12 PM

What CARB-EO certified headers are you reinstalling?  Most of the dual-cat CARB-compliant headers were not impressive, because of the CARB (and Federal) requirement that the cats can not be relocated from their stock position.  As a result the driver side primaries looped up above the valve cover, overheated everything under the hood, and produced little in the way of gains.

 

There's a CARB website that lists all the CARB approved aftermarket parts like headers, cats, and probably the Y-pipe.  There's not much you can do to replace the weight of the cats.  So you're left with possibly a thinner gage metal for the Y-pipe tubing.  Not a lot there unless you can find someone the uses titanium.


1994 FIREBIRD FORMULA
FRED

 
381ci all-forged stroker (Callies Stealth, Oliver billet rods, BME 2618-T61 nitrous pistons) - 10.8:1 - CNC LT4 heads/intake - Comp Cams solid roller - MoTeC M48 Pro engine management - 8 LS1 coils - 58mm TB - 74#/HR injectors - 300-shot dry nitrous - TH400 - Gear Vendors 0.78:1 O/D - Strange 12-bolt - 4.11 Pro-Street gears - AS&M headers - true duals - Corbeau seat - AutoMeter gauges - roll bar - Spohn suspension - QA1 shocks - a few other odds 'n ends. 800HP / 800lb-ft at the flywheel, on a 300-shot. 11.5 @ 117 MPH straight motor
 
https://www.firebird...9_698_32777.jpg

 


#3 SoCalTA

SoCalTA

    Firebird Oil Changer

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  • Model: Trans Am
  • Engine: LT-1
  • Transmission: M^

Posted 02 July 2020 - 06:43 PM

Hey Fred ...

 

What you described for the drivers side is exactly what I have  (JBA's to be exact) ... while not shorties I guess they are "mids" since the passenger side extends down to about where the dipstick enters the oil pan. I recently had them ceramic coated inside and out.  When I first purchased them they were coated by JBA and a few years into it, it toasted a few brake boosters...not fun .. along with a few other things ...  any whooo... I'll look and see whats out there on that site.... if I can make then lighter .. maybe better flowing cats ..... If they can be improved then why not ..






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