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lunchie

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Posts posted by lunchie

  1.  philr8 said:

    Totally different pipe

    We have done 3 different options on several 2l JDM GRB STI cars

    1. Cut off the turbo flange of the Xforce exhaust (or any GRF 2.5l Sti aftermarket down pipe) and weld on a laser cut JDM V11 flange (in stock)

    2. Use the stock down pipe, remove the cat by cutting it out and replacing pipe (factory JDM downpipe is bellmouthed)

    3. Replace the complete down pipe with a JDM aftermarket down pipe, $800-1200 NZD by time you get a decent one, GST, import duty etc

    Regards

    Phil

    Dynotech Industries

    the first option is what I would do if I didn\'t want to spend 800 odd bucks. The Xforce products are very high quality so if you could modifiy one of them then I think that would be a good option

  2.  Koom said:

    The P1\'s engine is a boosted version of the MP4-12C which ran at 17.3psi according to Road and Track. And then google tells me that the P1 gets more power using 3psi more than the 12C. So ~20psi makes sense.

    2.4 Bar in a 3.8L engine should be making stupid horsepowers, not just quite alot ;)

    As for the STI having an inherent deficiency, yeah :::) Nice one. Considering how well the same basic layout worked for a decade or so in WRC. Also look at Targa results. There\'s always the odd EVO or STI amongst the 911\'s and GTR\'s at the front. I wonder how much of the Nurburgering times come down to tyres?

    Track conditions change. Its not like alot of those guys spend all year trying to set a good lap time. Reading recently about the time they set in the Holden ute, it came down to one last run at the end of the day. I\'d hazard a guess that alot of the other times coming from the ring are done in similar conditions, and there would be a few manufacturer\'s/companies at the top of the times charts that have had the luxury of lots of time spent there.

    Just look at the list of cars around the 7:55 mark, it\'s not bad company to be in.

    Yeah seems odd about the boost. Some people are quoting over 2bar, some only 1.5, I dunno maybe different way of measuring it/calculating it

  3. 1. I just read that the mclaren p1 runs 2.4bar of boost standard, isnt that like 37-38psi? How is that possible over the long term, I mean that sounds like HEAPS and I am guessing they expect the engine to last a while too? Just curious as even in the early 2000\'s sti\'s and evo\'s and euro hot hatches only ran 15-20psi didn\'t they?

    Just seems like a lot of boost and I am curious what factors allow that level of boost pressure to be used safely and why such high levels are used in a road car.

    2nd question.

    Was reading about the revolution sti that makes 510hp with a fully built engine,sequential gear box and roll cage and stripped interior etc etc and yet only managed a 7:53 around the ring.

    Now I know that is not slow really but a stock gtr or 911 turbo does it in the 7:20-7:30 time with very similar power but a whole lot more weight (probably 300-400kg.

    Why is that? I mean its not like they had a bad driver in the car or anything either.

    Just curious if there is some inherent deficiency about the actual sti platform that makes it unable to significantly improve its times as it seems like the STI was rebuilt/tuned with a much more track focused approach than a stock GTR or 911 would have from the factory?

  4.  evowrx']

    [quote name='topza501xx said:

    I was told today.. That if i could get my hands on a vf37 turbo, twin scroll manifold+ up pipe from a v7-v9 sti, sump, 3inch downpipe.. They guy will make my car fly lol hahah he said the car will run fine with the mods with no problem as a daily driver at all .. is this true or just bullshit ??

    /quote]

    Just get MSE to work your current turbo = job done. No header change/bother around.

    BEST idea so far.

    Talk to steve and tell him your goals. This way you can keep your factory manifold and engine bay look while still probably gaining a good 50-100hp atw with the right reflash after its refitted.

    Will probably be by far the cheapest option too and instead of a cheap chinese made turbo or a questionable 2nd hand brand name one you will have a fully rebuilt subaru item from a well known and respected expert that will actually build a turbo to suit your goals rather than an off the shelf item.

  5.  newsuba said:

    Not necessarily so...

    The LFA was a limited production high-tech showcase.

    The next Supra can productionize the tech.

    Porsche do it all the time.

    Remember the Porsche 959 ?

    Subsequent production 911 Turbos used the same tech and were even more powerful and faster.

    ;D

    Hmmm a very good point. I didn\'t consider that

  6. Only issue I can see with a new supra is that it would most likely not compare to the mk4.

    At the time of the mk4 the supra was the ultimate pinnacle of what toyota could put into a car. An amazing engine, good suspension and a great gearbox and probably the best aero they could come up with at the time. Who knows what it cost to develop, a lot I would say.

    Fast forward to today and the LFA is the pinnacle of toyota/lexus cars and we all know how much that cost to develop and what it costs to buy.

    What I am getting at is that in 1994 the supra was toyotas supercar and they could afford to go all out on it because they had nothing higher. Now that is not the case, so I wonder if any new supra would suffer because of the need for the LFA to be the top dog.

    Any new supra would have to be below the LFA in performance terms and I think that could make it difficult for the image of the supra in terms of what it once was in the 1990\'s and what it would have to be now.

  7. Depends what the muffler is like, if it is a massive cannon of a thing with like a 6 inch straight through design then it might make it super loud, BUT since it is a turbo and it is only a muffler I doubt it would get loud enough to fail a wof.

    So in short, yes it will be louder but I would be surprised if it got super loud since the rest of the system will be stock with all the factory restricters and bits and pieces that keep the sound volume in check.

    Should give you a bit more of that nice subaru rumble though if that is what you\'re after :D

    Do bare one extra thing in mind though, fitting a super massive muffler (if it is a big thing) WILL make your car 500% more likely to get pulled over by the police/harassed by boy racers.

  8. I have looked into this too and found a fair bit of differing opinions, the other large market for JDM stuff is the UK and the guys over there do a heck of a lot of reflashing and almost all say an EBC is not needed for a basic reflash with minimal mods, HOWEVER the tuner which I would consider to have the most experience in this area (Andre at STM) also suggests that an EBC is a good idea.

    He is happy to tune without one but he says he has seen boost spikes on some subies without the EBC, so I guess its up to you, yes it will cost probably $500 or more but you will have peace of mind that the tuner can create a tune which pushes the boost to the limit of factory tolerances without worrying that it will spike.

    Tough call ay?

    It it were an STI I would probably say no simply because the STI engine is likely to be more tolerant of a few extra PSI but with the WRX engine you may not have such a large amount of leeway.

  9.  SubLeggy']

    [quote name='ballsrburning said:

    The block is a ej207 got basically the same car, engine is open deck mine was, I would change this for semi closed or closed deck block. Any forged pistons the main ones will do 250 easy, I would stick to Oem bearings. Your choice is infinite 250 kw is not all that much these days.

    /quote]

    Ahh sweet thanks for that. Wat does infinite mean?

    Infinite means endless mate, as in there are endless choices

  10.  newsuba said:

    Back in the early to mid 90s decent Jap cars were nowhere near as cheap as they are today.

    Jap imports had yet to flood the market.

    New VTI-R Hondas were $46-60k

    Evos and STI\'s ~$60k

    Supra Turbo $165k !

    Celica GT-Four $93k

    Nissan 300ZX $100k

    Nissa 200SX $55k

    Currently

    new sti 69-73k

    new gtr 120k+

    new 370z 75k+

    New GT86 45k+

    Yeah you are right, they are much cheaper now, not!!! :P :P

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