How much boost?
Honda-Tech Member
Joined: Jun 2002
Posts: 849
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From: Bay Area, CA, USA
before everyone jumps on a band wagon and reams you. You have a vtec engine not a vtech. Also you gotta define what you plan to boost your engine with? Rev-hard turbo kit/Greddy turbo kit/full-race turbo kit/jrsc/
I would say 6psi would be a safe guess. Forged internals will allow you to run higher boost psi.
search will be your friend, read through the forum, there is plenty of discussions about this topic.
I would say 6psi would be a safe guess. Forged internals will allow you to run higher boost psi.
search will be your friend, read through the forum, there is plenty of discussions about this topic.
Honda-Tech Member
Joined: Nov 2004
Posts: 2,577
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From: Tecks-us
Re: (no2unenolife)
you have two different questions here:
1) what can my ENGINE handle? and
2) what can my engine MANAGEMENT handle?
two very different things. your ECU can't handle any boost at all. your engine can support 5-7psi with crappy tuning, 12psi with good tuning, 15psi with great tuning, and i've even seen ~18psi with sweet sweet tuning. so basically you can get 190whp all the way to 320whp depending on tuning. so what are you waiting for? get a capable fuel system and GET TUNED
1) what can my ENGINE handle? and
2) what can my engine MANAGEMENT handle?
two very different things. your ECU can't handle any boost at all. your engine can support 5-7psi with crappy tuning, 12psi with good tuning, 15psi with great tuning, and i've even seen ~18psi with sweet sweet tuning. so basically you can get 190whp all the way to 320whp depending on tuning. so what are you waiting for? get a capable fuel system and GET TUNED
Joined: Sep 2004
Posts: 1,132
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From: Dekalb, IL
Re: (95lstegman)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95lstegman »</TD></TR><TR><TD CLASS="quote">you have two different questions here:
1) what can my ENGINE handle? and
2) what can my engine MANAGEMENT handle?
two very different things. your ECU can't handle any boost at all. your engine can support 5-7psi with crappy tuning, 12psi with good tuning, 15psi with great tuning, and i've even seen ~18psi with sweet sweet tuning. so basically you can get 190whp all the way to 320whp depending on tuning. so what are you waiting for? get a capable fuel system and GET TUNED</TD></TR></TABLE>
very well said. definately worry about engine management ie hondata uberdata neptune, etc. and its not about psi, but rather power that your motor can handle. i would say tune for around 300whp or so and you are good to go for a daily driven boosted machine!
1) what can my ENGINE handle? and
2) what can my engine MANAGEMENT handle?
two very different things. your ECU can't handle any boost at all. your engine can support 5-7psi with crappy tuning, 12psi with good tuning, 15psi with great tuning, and i've even seen ~18psi with sweet sweet tuning. so basically you can get 190whp all the way to 320whp depending on tuning. so what are you waiting for? get a capable fuel system and GET TUNED</TD></TR></TABLE>
very well said. definately worry about engine management ie hondata uberdata neptune, etc. and its not about psi, but rather power that your motor can handle. i would say tune for around 300whp or so and you are good to go for a daily driven boosted machine!
Honda-Tech Member
Joined: Nov 2004
Posts: 2,577
Likes: 0
From: Tecks-us
Re: (Evanmb44)
well, tuning isn't all you'll need. start with this:
1) get your turbo bolted on mechanically. make sure it's not a piece of junk used garbage either or it will leak oil/water into the exhaust, spool up late, etc.
2) get bigger injectors. 370cc/min minimum for turbo B-series with a safe fuel pressure. up to 550cc/min which should keep an easygoing fuel pressure and duty cycle even at 300whp. do some calculations if you want; these are just estimates. this part makes a big difference in reliability. injectors don't like sky high fuel pressure. your fuel pressure (even with a rising rate regulator) probably should never exceed 75psi. those cheap FMU's will get you to around 135psi, so don't use one of those.
3) get an adjustable fuel pressure regulator
4) either get tuned by Hondata or the like or have your ECU chipped and tuned on a dyno by some other means, but don't skimp here. this part is the difference between 225whp blowing up in a month and 300whp being reliable for years.
1) get your turbo bolted on mechanically. make sure it's not a piece of junk used garbage either or it will leak oil/water into the exhaust, spool up late, etc.
2) get bigger injectors. 370cc/min minimum for turbo B-series with a safe fuel pressure. up to 550cc/min which should keep an easygoing fuel pressure and duty cycle even at 300whp. do some calculations if you want; these are just estimates. this part makes a big difference in reliability. injectors don't like sky high fuel pressure. your fuel pressure (even with a rising rate regulator) probably should never exceed 75psi. those cheap FMU's will get you to around 135psi, so don't use one of those.
3) get an adjustable fuel pressure regulator
4) either get tuned by Hondata or the like or have your ECU chipped and tuned on a dyno by some other means, but don't skimp here. this part is the difference between 225whp blowing up in a month and 300whp being reliable for years.
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