[evo_killer]

Ok, maybe I'm not searching the search hard enough but what is the most hp I can get on the stock engine and at what psi. Also what mods without upgrading the turbo for that specific hp? Just wondering.

[wrxtc]

The stock turbo maxes out at roughly 320-330whp (high reading dyno). That power level is probably unsafe without an FMIC or maybe even not at all because you are pushing the envelope of the turbo's efficiency range to the max.

Also the stock injectors will max out somewhere in this power level region so you will definitely want to upgrade (or mod) them to higher flow.

Running injectors at 90-100% duty cycle for long periods of time will cause them to fail very quickly. If you tune your motor with your injectors running nearly constantly like this at max loads don't run long road races over and over or they will probably fail and your motor will blow.

The stock turbo can really only operate at acceptable efficiency up to 18psi. It can be stretched to 20psi and this may be necessary to reach these 320-330whp levels. In my mind it would be stupid to push the stock turbo to its maximum and risk damaging your motor.

For about 2 grand you can get a very nice turboback exhaust and ECU reflash (EcuTek or Cobb AccessPort) to get to 280-300whp safely. I still have my doubts about running the motor hard around a race track for long periods of time even with these 'safe' tunes. For daily driving it should be completely safe though.

[NorCALSpeed]

What about running something like AP stg 1 or 2 on a long (10 hr plus) road trip. Granted I'd probably want to run the eonomy map so I'm not in boost at all or much, but just for arguments sake would that be unsafe? Obviously track driving is very different.

[cnstman]

there is no economy map for the sti. just use the normal map and keep your foot out of it.

[wrxtc]

Originally Posted by NorCALSpeed

What about running something like AP stg 1 or 2 on a long (10 hr plus) road trip. Granted I'd probably want to run the eonomy map so I'm not in boost at all or much, but just for arguments sake would that be unsafe? Obviously track driving is very different.

Yea, daily driving is no problem with maxed or nearly maxed out injector duty cycles. It's only sustained periods of those high loads that will cause the injectors to fail. Like if you did donuts for maybe 30 minutes straight, and of course track driving. I would think drag racing would also be completely safe for the injectors as long as you don't run down the strip 20 times in a row with no breaks. With either of these two cases the more likely thing is that a drivetrain part will break first and force you to let the engine rest, lol.

I'm gonna guess that autocross track driving is safe with a 'maxed out injectors' tune as well because the runs are so short. I don't see the injectors overheating fast enough when the longest laps are almost always well under 2 minutes and you have to slow down so many times. Still it would probably cause much faster wear on the injectors if you ran around the cones every single week but that's impossible because autocross events don't happen that often.

In any case if you want 320whp or higher I recommend that you get a new turbo (FP Green, Something from Deadbolt, Something from APS, Garrett GT30R/GT35R, etc.), higher flow injectors (720cc-880cc), higher flow fuel pump (walbro is most popular) and possibly new fuel rails. This is all in addition to turboback exhaust and a great tune using your engine management of choice (EcuTek, Cobb/AccessECU, Vishnu XEDE, TurboXS UTEC, Element Tuning Hydra Nemesis). I'd stay away from Greddy E-Manage, I've read about many people's engines failing after running with that EM for a while.

[Wazazell]

Originally Posted by evo_killer

Ok, maybe I'm not searching the search hard enough but what is the most hp I can get on the stock engine and at what psi. Also what mods without upgrading the turbo for that specific hp? Just wondering.

Do you really need someone to hold your hand and walk you through it??

Fine... I'll share the secret of the SEARCH with you, be sure to print this page so you can follow along.

1) Click the "Search" button near the top/center of the web page (it has a little magnifying glass icon next to it)

2) In the "Search Query" form, type the keywords of your search in the field titled "Search for Keywords"

...for example, type "stock and internals"

3) Gently click the "Search" button at the bottom of the form to submit your search

4)Now the tricky part, READ the TOPIC titles of the search results. If you see a title that might be relevant to your search, READ THAT TOPIC!!

See it's easy!! Now you try!!

(Hint: there are already topics titled "how much power with stock internals" and "internals???" and "STi potential" and "turning up stock turbo psi")

[smurfm3]

I ran my STi for 3 hours on track with an XEDE and turboback.

Good times. Just make sure your oil temps don't get too high and run a safe tune. I had 100 octane in the tank but ran my 91 map just for safety. If you're concerned about protecting the motor, get an oil cooler.

But you only really need one if you're on track a lot.

Drag races, occasional pulls, or daily driving (even aggressively) doesn't strain the motor like an hour on boost at the track. Then again, those activities are not even close to being as fun.

Gotta pay to play. A safe tune and a turboback will be just as reliable as stock. If you start pushing the envelope and run a lean tune with lots of timing, then you're just asking to blow a motor.

[evo_killer]

Originally Posted by Metal_Dave

Do you really need someone to hold your hand and walk you through it??

Fine... I'll share the secret of the SEARCH with you, be sure to print this page so you can follow along.

1) Click the "Search" button near the top/center of the web page (it has a little magnifying glass icon next to it)

2) In the "Search Query" form, type the keywords of your search in the field titled "Search for Keywords"

...for example, type "stock and internals"

3) Gently click the "Search" button at the bottom of the form to submit your search

4)Now the tricky part, READ the TOPIC titles of the search results. If you see a title that might be relevant to your search, READ THAT TOPIC!!

See it's easy!! Now you try!!

(Hint: there are already topics titled "how much power with stock internals" and "internals???" and "STi potential" and "turning up stock turbo psi")

Thanks metal_dave, your're a lifesaver! Not.

[Sands]

Metal Dave - tone it down a bit please. No reason to get all up like that. Wrxtc actually has some great summary info from an honest question.

This is the second thread I've seen in 3 minutes where you're gettin all snotty.

[evo_killer]

Thanks for the info wrxtc.

[crypsatir]

well it is ridiculous that the kid keeps asking the same questions in different ways and seems to be postwhoring for some reason or another. Evokiller, why dont you give one of the tuners a call or maybe use the search function on here or even at Nasioc to answer some of these questions. I'm not annoyed that you do it, but I have read more than a few of these threads started by you and they do all seem to be the same. Your never going to find the perfect setup by asking over and over again you should just buy some stuff and if you dont like it then you can sell it and try something else. Now EM would be a good idea to get before anything else and will be a good power increase. Get an AP and get a 3" TBE and you will be very very happy. You will not be faster than everyone else at your highschool/college but it will be fast and you will enjoy it. Dont be so concerned with how much power you can get becasue if you are a good driver then most people will not be as fast as you even if their cars have xxxwhp. Dont get into the dick wagging contest because you will always lose to someone. And I would listen to wrxtc and go do some of your own research. Plus if you really want to have the most HP out of your engine just lie, that always works well and just tell them you dont race thats always a good one.

[evo_killer]

For starters I'm not a kid in high school or college. Second I am not trying to be the fastest cuz there is always going to be someone faster. Third I have done my own research, I just get ideas and try to see what other people are doing to achieve that power. Lastly, you say I post the same thing but in different ways. Ok, and is that the end of the world for you guys or something? Half the time I don't keep track of what I posted. I can't remember everything!

[12SecSTI]

I am fastar!

[12SecSTI]

and a post whoooooreee...

[donmei]

Evo,
In the year plus that I've been on this forum, I've never had anyone tell me my questions were stupid or inane.

For you that seems to be a daily occurance. I'd look inside myself for the answer to why you seem to bring this out in people.

Please don't say something to the effect of "I just want to learn, you idiots are not willing to address those who don't know anything".

oh wait thats not how you write. here it is "just cuz i'M noT allup, dont bE d1kin wit me".

You DO ask the same thing 5 different ways, in 5 different posts. Often the posts are timed 10 minutes apart.

If you can't remember, maybe its the ADHD, that can be treated with meds.

Also TO THE REST OF YOU. If you recall, evo bought a bellmouth dp and it caused boost creep. He thought that that the increased wastegate flow of a bellmouth caused it. So he advocated the HKS product. I spent 500 words trying to explain boost creep all to no avail.

Sorry for this rant, but I can't sleep, its f'ing late and I'm cranky.

Don