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  • #1

    borla

    does any one have any opnions on the borla cat back system i have one with a quick time peformance valve fitted. i have found this very usefull but the car does not feel as quick with the valve open is there a reasion for this or is it just me. i was thinking of fitting headers to resolve the problem and make the car just a bit louder
    http://www.pontiacdriversclub.co.uk/ keeping it pontiac in the the uk. 93 formula a4 ZR1 rims
    C A I , B M R torque arm lower arms panhard rod and sub frame conectors borla adjustble with Q T P valve and no cat WHAT NEXT ?

    big burn out movie nats 2003 burn out contest
    mirror burn out movie top ten burn outs
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  • #2
    There's a test of the Borla on ws6.com, showing the differences in HP for the various plate sizes and full open. I think the 1.75" plate showed the highest HP. But it was only one or two HP difference between the different plates, nothing you would notice.

    http://www.ws6.com/mod-5.htm
    Fred

    381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - 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 @ 117MPH straight motor

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    • #3
      thanks

      i think i rember wolfman saying that he did not like the borla system (if it wasnt ken i am sorry ) somthing to do with the flow i think. does this ring any bells with any one?
      http://www.pontiacdriversclub.co.uk/ keeping it pontiac in the the uk. 93 formula a4 ZR1 rims
      C A I , B M R torque arm lower arms panhard rod and sub frame conectors borla adjustble with Q T P valve and no cat WHAT NEXT ?

      big burn out movie nats 2003 burn out contest
      mirror burn out movie top ten burn outs

      Comment

      • #4
        I don't think I've ever heard anyone complain about the "adjustable" Borla cat-back system. I know I bought the non-adjustable Borla "rear section" back in 1994, and it wasn't very good. But that was because I was still using the inferior stock intermediate pipe, and the "rear section" muffler only had a 2.5" inlet.
        Fred

        381ci all-forged stroker - 10.8:1 - CNC LT4 heads/intake - CC solid roller - MoTeC engine management - 8 LS1 coils - 58mm TB - 78# injectors - 300-shot dry nitrous - TH400 - Gear Vendor O/D - Strange 12-bolt - 4.11's - AS&M headers - 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 @ 117MPH straight motor

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        • #5
          I think the Borla is great. It works very well and flows very well. It is not the restriction as far as I know.

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          • #6
            Originally posted by bigtow
            does any one have any opnions on the borla cat back system i have one with a quick time peformance valve fitted. i have found this very usefull but the car does not feel as quick with the valve open is there a reasion for this or is it just me. i was thinking of fitting headers to resolve the problem and make the car just a bit louder
            It is a great system. I have been using one for about 6 years. The reason the car doesn't feel as quick with the baffle open is due to the loss of backpressure. I have AS&M headers on mine and the sound actually got quieter with the headers. I do recommend that you keep the cat when you do the headers as they sound much better with it.
            Kbddsfc,B&M Ripper,Ws6 Rims,Hotchkiss Stb,Bmr Lca,Gwphr,Strange 4:10's,LPEds,Borla,AS&M Headers,RT cat,Powerslot rotors,Hawk Pads R/Pf pads Fr,Mba shift knob,Slp Hood&Airbox,Holley Powershot filter,Fernco mod, Lt4km,Firebat decals,T/A Girdle,HPP.160stat,Bilstein shocks,Z06 Brakes,AFS ZR1's,GSD3's.

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            • #7
              I have borla and I love it. You have to remember that todays cat backs aren't exactly big power adders anymore because the factory mufflers and pipes are great from the cats back. So if you are choosing which cat back to get choose on sound not performance. You will notice performance when/if you put headers on, that is when your car will sound a hellof alot better and wake up as well power wise.
              02ws6 auto 329.1hp @ 5500rpm 335.2lbsft.@5500rpm. Also 02wrx auto. Website Http://hometown.aol.com/vins87gn/vinnyscars.html

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              • #8
                I've heard some complaints about the sound quality with some of the bigger power adders like a cam.

                I love mine though....love the sound. The shorty headers actually enhanced it! The wife says it actually sounds a lot better when you're driving behind the car than when you're inside it. I have the quick time valve too. The guy that makes them is in North Jersey. I definitely recommend it! Before it took me about 10 minutes to get the tools out and change a plate. Now it's available anytime I want!
                Joe K.
                '11 BMW 328i
                '10 Matrix S AWD
                Previously: '89 Plymouth Sundance Turbo, '98 Camaro V6, '96 Camaro Z28, '99 Camaro Z28, '04 Grand Prix GTP

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                • #9
                  i have longtubes, ory and the 3 inch borla with no plates....its loud, raspy, and scary sounding....

                  ....cant wait for the cam
                  pewter 99 TA...t-tops, leather, m6, lid, longtubes back, gears, spec clutch, spohn suspension

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                  • #10
                    Originally posted by cbrr_mike
                    i have longtubes, ory and the 3 inch borla with no plates....its loud, raspy, and scary sounding....

                    ....cant wait for the cam

                    how much did you spent on all that bro ?
                    2001 Trans Am WS6 M6
                    SLP: short throw|short shifter|CAI|MAF|TB ByPass
                    Spohn: SFC|Tunnel Brace|LCA|Swaybars|LCA bracket|Shock Tower Brace|Nitto NT555 Extreme Performance|Pacesetter LT|TrueDual|1-chamber Flowmaster|DLA224/224Cam|Comp Cams 918 Springs|ported oil pump|timing chain|PRC LS6 heads|LS7 lifters|Fast Intake 90mm|NW TB 90mm|Thermostat 160|NGK TR 55|RacetronicFP|429/404 hp/tq|tuned by George Haddad motorsports
                    http://www.cardomain.com/memberpage/690385

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                    • #11
                      I have qtps long tubes, high flow cats and borla and it was all together like 2grand estimated. But worht every penny especially since my g/f bought the headers for me on my B-day.
                      02ws6 auto 329.1hp @ 5500rpm 335.2lbsft.@5500rpm. Also 02wrx auto. Website Http://hometown.aol.com/vins87gn/vinnyscars.html

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                      • #12
                        Back when Lingenfelter was building these cars, he felt it was a good exhaust. In an aftermarket F-Body showdown at the track, the Vortech guys were complaining that Lingenfelter was running a straight exhaust with his 383. He replied "Well maybe I'll go put a blower on my car" - that shut them up...That was all the endorsement that I needed. I found out that the rear pipe was bent wrong and made it hard to install. Also their customer service was impossible to contact. Still, I like the exhaust and the electric valve in the back is a good mod. I never did experiments to see if it helps to have it opened up, but I would think that you would benefit from no restriction at the track.

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