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02-27-2004, 12:36 AM | #1 |
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Which turbo can make 350awhp on 93 octane
My buddy is looking for a bolt-on turbo for his STi that will make 350 awhp on 93 octane with supporting mods and no nitrous. I'm guessing SR40/50, 18/20G, or PE1820. Again, he's not interested in running anything except 93 octane. Any info would be appreciated.
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02-27-2004, 01:09 AM | #2 |
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It will be very difficult to make 350whp with any turbo that is bolt on with 93. You're really boost limited by running that octane and without the boost you won't make the hp.
A FPgreen or AVO500 are your best bets though. |
02-27-2004, 02:02 AM | #3 |
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Stock turbo, full supporting mods, Dynojet.
Done |
02-27-2004, 03:10 AM | #4 | |
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02-27-2004, 03:33 AM | #5 | |
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I was talking in terms of a BPU STi, without running 20+ psi (hard to do on pump) it will be tough make 350whp. Especially with a bolt on turbo. BTW, mike, OT but ever seen the "gixxer kart" ? Money laid out...parts have been bought...look for updates |
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02-27-2004, 07:22 AM | #6 |
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SR50 will do it. MZM got right around 350WHP on 93oct.
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02-27-2004, 08:03 AM | #7 |
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Jim,
Not going to be able to make it up there this weekend. Might see you up there next weekend. See now you give me even more reason to come up for Imprezafest(gixxerkart)I have that video and watch it often. But, keep me posted on how the girl does this weekend now that you have your boost gremlins in order!! Richard |
02-27-2004, 09:22 AM | #8 | |
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02-27-2004, 09:36 AM | #9 |
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Gabe,
20G will do great with no serious lag. Your going to have to boost to at least 19-20PSI though. My Mr-2 with 2.0 liter made 306whp on pump gas at 16PSI on the 20G. Mr-2 has higher compression, STI has more displacement so I would say they should be about even on that turbo. Why chance it though? STI is not the motor you want to push on pump gas. At least till reliability has been proven. |
02-27-2004, 10:19 AM | #10 | |
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-st |
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02-27-2004, 10:26 AM | #11 |
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Me 2. That has me worried
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02-27-2004, 10:38 AM | #12 | |
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02-27-2004, 10:50 AM | #13 |
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GT35R
Why not consider the GT35R? Just too laggy?
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02-27-2004, 10:52 AM | #14 |
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Why God? Just you can't crack 300WHP on a stock turbo w/o resorting to racegas?
And before you mouth off, A car that I had *NOTHING* do do with hit 299WHP with just a intake, TMIC, TBE, exede and pumpgas. On the dyno at Matrix. Which reads about the same as a dynodynamics... Which reads a fair bit lower than the dynapak. Gee maybe he could have cracked 300 with some other supporting mods. Maybe the higher than hell reading dynojet would have popped out a 350+ number. |
02-27-2004, 11:36 AM | #15 |
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See, the thing about all of the piggyback units for the STi is that you are still not getting a consistent tune. You have the same delay time for the computer to switch over to open loop boost as the 04 WRX if my source was correct. So, I still wouldnt trust a "tune" with just a piggyback ecu for an STi. I think the UTEC will be the only feasable answer and still be able to keep the factory ecu for idling, cold starting, crusing, and such. Ah well, I think that proper engine management is the only thing that is holding back the sti's from being reliable making big numbers.
XT6Wagon, I dont see that happening either with the stock turbo. But, I could be totally off base and incorrect. I am not saying that you are wrong, mearly that it is hard to believe that number on a dyno that is actually worth a crap, hmm? Anyways, back to the original topic. Sorry if I brought this off topic at all. Richard |
02-28-2004, 10:57 AM | #16 | |
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02-28-2004, 12:36 PM | #17 |
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Yum, steak.
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02-28-2004, 01:23 PM | #18 |
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haha...god has offered so many steak dinners, but i dont think he has bought one yet!
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02-28-2004, 01:26 PM | #19 | |
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02-28-2004, 01:27 PM | #20 |
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This thread isn't about stock VF39 capabilites. Stay on topic please.
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02-28-2004, 01:39 PM | #21 |
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I think a VF22 can pull 350whp.
I'll have data to back up my thoughts after march 21st. ported & polished Vf22 (running around 20 psi), header, xede, catless TBE, Injectors, bigmaf, pump, cold air, stock STI TMIC, turbo inlet pipe, turbosmart BOV/BPV, |
02-28-2004, 01:57 PM | #22 |
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VF22 can easily pull 350 awhp and beyond.....it can be done on a 2.09 liter so certainly can be done on a 2.5.
VF39? Ain't gonna happen - ther AR of the exhaust side is simply too small to hit that kind of figure on boost alone. A 22 or 23 could get you there, though something along the lines of an 1820 much more easily, without the spool issues some of the other turbos out there have. 1820 is very livable for everyday when tuned properly.....price is the biggest barrier here IMHO. The key to ANY of these setups is going to be proper engine management, as it is on any other car. Best components in the world can equal a truly slow car if they are not carefully planned out and tuned to work with one another. Once the UTEC is out for these cars, I think you'll find more than a few 400 hp STi's roaming around, and doing so safely. |
02-28-2004, 03:20 PM | #23 |
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Z1.... quick question.
What do you think a safe boost level to run with a vf22 is on a 2.5 sti motor with the above mods?? Jerry from deadbolt told me it should be ok to 22-24 lbs, your opinion? |
02-28-2004, 03:29 PM | #24 | |
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02-28-2004, 03:37 PM | #25 | |
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