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how fast could a stock STI run?

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  • how fast could a stock STI run?

    Currently running a everything full stock 2015 STI(VA) with street tire(200tw Dunlop z2).Obviously, STI is not a popular "buttonwillow choice" compared to some other JDM like s2000 or FRS.
    The only change is I did alignment. Max stock Front camber with-1.9, toe0; rear is factory spec(toe0, camber -1.0).

    I've been running buttonwillow cw13 for a year now and constantly got 2:03(14th is me: Buttonwillow Configuration 13 lap times - FastestLaps.com) last year and only one lap for 2:02.

    Wonder how fast could I run with my stock STI at buttonwillow? Is it 2:01 the limit?anyone familiar with STI?suggestions?

    I daily drive a FRS now but still love to track my VA STI.
    Thank you!
    Last edited by jqsti2015; 03-14-2017, 03:04 PM.
    VA(15) STI/FRS

  • #2
    Is this before or after your ring landings give up?

    I've heard of the STI. The stock suspension will be what holds you back. It's a pushy thing and it works the edges of the tires hard.

    Oh, and you should definitely be doing '55s easy, maybe a '54 if you try harder.

    Comment


    • #3
      Hahaha

      Thank you for replying
      I've read some tips from you about subaru, which helps me a lot.

      I find out Ringland very rarely gives up when it's full stock. It starts to break after 300whp tune. Stock tune is only about 240whp.Same story with my FRS's FA20: stock engine is fine but don't tune it hard.

      Maybe it'll break after 100k miles, but my car is still at 30k. Definitely sell them after drivetrain warranty(70k miles)

      Sad thing is subaru doesn't have a better engine than 15 year old EJ now. SuperGT BRZ still uses old EJ.
      Last edited by jqsti2015; 03-14-2017, 07:40 PM.
      VA(15) STI/FRS

      Comment


      • #4
        Originally posted by SeanB View Post
        Is this before or after your ring landings give up?

        I've heard of the STI. The stock suspension will be what holds you back. It's a pushy thing and it works the edges of the tires hard.

        Oh, and you should definitely be doing '55s easy, maybe a '54 if you try harder.
        I'm satisfied by the stock suspension by far, which at least performs better than my FRS stock suspension.
        A lot sharper in some narrow road.

        Planning to modify my FRS suspension to JDM spec brz Ts strut and spring.
        Last edited by jqsti2015; 03-14-2017, 06:53 PM.
        VA(15) STI/FRS

        Comment


        • #5
          Yes, leave it stock. The biggest clouds of smoke I've ever seen at a racetrack always have emanated from an overly modified Subaru.
          www.TrackHQ.com

          Comment


          • #6
            Originally posted by ucfbrett View Post
            Yes, leave it stock. The biggest clouds of smoke I've ever seen at a racetrack always have emanated from an overly modified Subaru.
            Agree.
            Last edited by jqsti2015; 03-15-2017, 12:29 AM.
            VA(15) STI/FRS

            Comment


            • #7
              It sounds like you're driving well. Re: lap times, hard to say. I can tell you that the only lap time that matters is yours. You can certainly go faster, and you will - the more you drive.

              What other people are doing doesn't matter unless you're competing under the same rules. For racers lap times only matter on the same day, same competition. It's not a static baseline, at best a reference. Weather and track conditions can influence whole seconds, even in the dry.

              FWIW - my STI's rings were damaged most likely due to a distinct fuel starve event in hard corning at >1/3 tank, T2 SoWS. My 33K-ish motor was 100% factory stock (which was part of the problem due to factory lean). It developed an unhealthy thirst for dinosaur smoothies thereafter. Motor grenaded at Fontana about a year later WOT in NASA TT. That wasn't the last time.

              Any way, enjoy the car. You're doing great. Keep at it and beat that 2.02x.

              Comment


              • #8
                Originally posted by SeanB View Post
                It sounds like you're driving well. Re: lap times, hard to say. I can tell you that the only lap time that matters is yours. You can certainly go faster, and you will - the more you drive.

                What other people are doing doesn't matter unless you're competing under the same rules. For racers lap times only matter on the same day, same competition. It's not a static baseline, at best a reference. Weather and track conditions can influence whole seconds, even in the dry.

                FWIW - my STI's rings were damaged most likely due to a distinct fuel starve event in hard corning at >1/3 tank, T2 SoWS. My 33K-ish motor was 100% factory stock (which was part of the problem due to factory lean). It developed an unhealthy thirst for dinosaur smoothies thereafter. Motor grenaded at Fontana about a year later WOT in NASA TT. That wasn't the last time.

                Any way, enjoy the car. You're doing great. Keep at it and beat that 2.02x.
                Do you think 200tw street tire is safe due to relatively low G force?
                Last edited by jqsti2015; 03-15-2017, 01:59 AM.
                VA(15) STI/FRS

                Comment


                • #9
                  Yes. A 200utqg tire is an excellent place to be. Good compromise of grip, feedback, and potential for recovery at excess slip angle. And possibly a more "neutral" sensation on factory suspension than say a significantly grippier tire like an rcomp.

                  Comment


                  • #10
                    Originally posted by SeanB View Post
                    Yes. A 200utqg tire is an excellent place to be. Good compromise of grip, feedback, and potential for recovery at excess slip angle. And possibly a more "neutral" sensation on factory suspension than say a significantly grippier tire like an rcomp.
                    thx for your tips.
                    I'll upload my video here once I reach 2:01, looking for more suggestions.
                    VA(15) STI/FRS

                    Comment


                    • #11
                      Originally posted by SeanB View Post
                      It sounds like you're driving well. Re: lap times, hard to say. I can tell you that the only lap time that matters is yours. You can certainly go faster, and you will - the more you drive.

                      What other people are doing doesn't matter unless you're competing under the same rules. For racers lap times only matter on the same day, same competition. It's not a static baseline, at best a reference. Weather and track conditions can influence whole seconds, even in the dry.
                      This is a nice, encouraging, general philosophy, but I have found that it is easy to think you are at the limit until you see what a better driver can do in an equally prepared car. Knowing that your car can go faster is a great source of motivation, even if it can be humbling. For an extreme example, consider how long it took for humans to break the 4 minute mile. Then once it had been done, it became relatively common. KNOWING you can go faster is different than just TRYING to go faster.

                      Disclaimer: this may or may not be based on my experience of buying a Supermiata from Emilio, and having the luxury of comparing my lap times to his old lap times in the same car at every race I enter . . .
                      2002 Porsche 911 Targa
                      1967 GTV
                      1991 Mazda SuperMiata - Junior
                      2008 350z - Sold

                      FastInFastOut.com

                      Comment


                      • #12
                        200tw don't mean a thing these days......

                        upload video and someone here will tell you how much time you left on the table...

                        but I wouldn't bother pushing a STI, it is only matter of time that it goes kaboom.. consider yourself lucky.
                        S1 Supermiata - 220whp
                        13 Tesla, ma: no engine !!
                        17 GT350R
                        03 Miata Club Sport
                        96 NSX
                        06 EVO MR
                        15 Mini Cooper S
                        Beck 550 Spyder

                        Comment


                        • #13
                          Originally posted by bellwilliam View Post
                          200tw don't mean a thing these days......

                          upload video and someone here will tell you how much time you left on the table...

                          but I wouldn't bother pushing a STI, it is only matter of time that it goes kaboom.. consider yourself lucky.
                          Haha maybe.
                          Did a leak down test a few months ago and everything showed perfectly after 25 track days and 15000miles hard driving(lots of back road...I'm a ricer).

                          I think EJ is definitely not a reliable engine but if maintained carefully, it sill could last a long time. I very rarely saw a piston ring issue on stock engine in newer model(2011+).....most common issue is rod bearing knock due to lack of engine oil or maintenance.
                          Last edited by jqsti2015; 03-15-2017, 12:42 PM.
                          VA(15) STI/FRS

                          Comment


                          • #14
                            were you experienced before this car ? it could be your first 20 track days were driving so slow car never stressed. now you are much faster, the harder you will be on the car.......
                            story: I talked to a Tesla S driver at a track, seen him tracking that same S many many track days in the past. so I asked him what mod he made that it didn't go into "limp" mode after 1/2 lap. He looked at me puzzled..........saying his car is stock........
                            I know Miata, I can tell you that $5k turbo Miata are super reliable at 2:10s. you start to go sub 2:05s, then it gets a little less reliable. as you hit sub 2s, it falls apart. as you hit sub 1:55s, they catch on fire while sitting in pit.


                            why live with a time bomb.....you sound like a season track'er (25 days is quite a bit). time for you to get a reliable dedicated track car.

                            Originally posted by jqsti2015 View Post
                            Haha maybe.
                            Did a leak down test a few months ago and everything showed perfectly after 25 track days and 15000miles hard driving(lots of back road...I'm a ricer).

                            I think EJ is definitely not a reliable engine but if maintained carefully, it sill could last a long time. I very rarely saw a piston ring issue on stock engine in newer model(2011+).....most common issue is rod bearing knock due to lack of engine oil or maintenance.
                            S1 Supermiata - 220whp
                            13 Tesla, ma: no engine !!
                            17 GT350R
                            03 Miata Club Sport
                            96 NSX
                            06 EVO MR
                            15 Mini Cooper S
                            Beck 550 Spyder

                            Comment


                            • #15
                              Originally posted by bellwilliam View Post
                              were you experienced before this car ? it could be your first 20 track days were driving so slow car never stressed. now you are much faster, the harder you will be on the car.......
                              story: I talked to a Tesla S driver at a track, seen him tracking that same S many many track days in the past. so I asked him what mod he made that it didn't go into "limp" mode after 1/2 lap. He looked at me puzzled..........saying his car is stock........
                              I know Miata, I can tell you that $5k turbo Miata are super reliable at 2:10s. you start to go sub 2:05s, then it gets a little less reliable. as you hit sub 2s, it falls apart. as you hit sub 1:55s, they catch on fire while sitting in pit.


                              why live with a time bomb.....you sound like a season track'er (25 days is quite a bit). time for you to get a reliable dedicated track car.
                              Yes, I used to own mazdaspeed3 and miata.

                              Being a dedicated ricer, I run my cars very hard in back road(redline every gear) and spent lots of time there, way more than some 20 or 30 track days. E.g. I left home at midnight and went to hwy1 sometimes.
                              I own two subaru engine(BRZ's FA20 and STI's EJ)and they both seem to be healthy in past few years.
                              They are hard to tune but for stock motor reliability is ok.

                              I don't track them on hot summer days. maybe that's the reason.
                              Last edited by jqsti2015; 03-15-2017, 05:30 PM.
                              VA(15) STI/FRS

                              Comment

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