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I'm just curious, Whats the most boost pressure put on a d17. I saw one with 13psi, but has anyone gone any higher (with a built up bottom end of course). I've seen people putting 30PSI OR MORE on older B-motors and the new K-motors, i have even seen older D16's with over 20PSI of boost on them, but i've never seen high numbers on a d17. Are our motors just that crappy or has no one ever tried.

 
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i seen a clip of gunz with like 17 psi, stock engine, it was just for like 1 run.

 
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I'll be pushing probably 17-20 very very soon. Whatever it takes to make 300 whp.

 
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Those are pretty high numbers.

 
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i remember that, when he beat the mustang gt at the track.

 
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I had 16 psi with a t25bb its all about tune people how many times do we gotta say it.

 
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agreed aboiut to have mine tuneed for 9psi daily, when i get my Stage 2 Cam and EMS im going for 15.

 
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i think the better question you should ask is how long the engine will last given a certain amount of boost.

 
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I do not totally agree to that either because something like the AEM EMS giving you total control of all engine aspects you can have a boosted engine last longer than some n/a or stock engines.

 
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how do you figure that? you're running boost on an engine that wasn't made to handle it. I don't care how much tuning you have, eventually that extra power will start breaking things unless you upgrade the internals. Look at all the problems the best boosters on the site have had. If you forgot or haven't been here since 01, go search around. And last time i checked, the ems is not a replacement ecu. Correct me if i'm wrong on that.

 
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Thge ems is not a replacement, but it is by far the best tuning tool for the car. And with proper tunning higher boost shouldn;t be a big issue. yes it will decrease engine life, but shouldn't kill it by all that much with proper maintnence on top of proper tunning.

 
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ems is now a replacement.

 
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Also i forgot to mention that the turbo may need to be rebuilt or replaced. I haven't seen a single turbo last more than 2 years so far. And thats just the turbo. Alot of other things can go wrong with the kit itself that has nothing to do with the car.

 
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I wish my turbo lasted me 2 years. My T3 turbo just blew up about a month ago and I got the kit installed in April. I also baby my car, it's not like I beat the **** out of the car. Oh well I just got done installing my new one. When you turbo a car that wasn't turboed out of the factory your gonna have to be on top of things. But I love my car even if it does give me problems.

 
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yes your pushing a N/A engine that was not meant to but jsut ebcause your boosting does not mean it will break faster if done properly. i've seen stock engines go long before. its just a statement in the first place so don't get all defensive about it.

 
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The theory is - if you dont abuse it, it will last longer.
But real life is not theory, real life made of examples.
As fas as I'm concerned, the more you baby something, it wont last as long if you abuse it...(most of the time)
We all know of tons of stories where one tried to beat sh*t out of a car, but it kept on going and going...
Think about athlettes, they do abuse their muscules and healthier then most of us.

 
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'Treat a turbo car like ****, and it will treat you like ****.'

 
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you also have to think that its not how much boost the motor will handle its how much horsepower it can make. the intenals are made of mettal what is 5,10,or 20 psi of air going to do to it... NOTHIN thats were people go wrong. the stock honda internals only handle a sertin amount of horse power then its over with that how you blow a motor its not the high amout of boost ist the hp. any good tuner will tell you that.

 
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the stock internals on our cars aren't "crap" by any means, but are they sufficient for high boost forced induction...no. It's a honda but more importantly a civic, they were designed to make a decent performing engine throughout the powerband by using the least amount of fuel possible. after boosting my stock internals for 5 months and running 5-8lbs on them they were still in really good condition (other than typical wear and tear), the pistons, rings, valves, rods, cylinder walls everything. The thing that got me was the transmission being the weakest point....i think D17s have the capability with great tuning and high boost to put down huge numbers but its only a question of how long they will last boosting that long.

 
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Ok, I have blown a few engines. Guess what? None of them was due to too much power. In fact, there aren't alot of members that have reached the 250 mark on stock internals. Do you really think the majority of people that blow motors is due to too much power? I guarantee you 97% is due to user error, either lack of tune, boost spike (lack of fuel), no ignition tuning, etc., etc.

I think some people around here need to do some homwork and learn what they're talking about.

Oh, and the AEM EMS is a FULL STANDALONE. It COMPLETELY REPLACES the stock ecu. The only exception is the 1030 which uses the stock ecu ONLY for the coolant temp gauge and a/c switch. Everything else is controlled by the EMS.

 
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Of course you provide proper maintenance to the engine to last it longer, but execively pamper it I dont find usefull unless its for a show or owner cant stand dust and such...

 
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Andy is exactly right...it doenst matter how much boost you are running, if you dont have a good tune, your car is going to take a crap quickly....He and i have both learned the hard way on more than one occasion...

And the first question that comes out a new persons mouth is "how much boost/psi can we run".....what you guys need to relize is that not all turbos make the same out of power at the same boost levels...for instance, Andy is shooting for 300whp out of his t3t04e super60(think thats what it is) on 18-20lbs....well, i am shooting for that same PSI level on my t67 and hope to make 400+whp....with it....

so specifiy what turbo you are talking about....and always remember, tuning is everything

 
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Your going to use a T67 on a 7thgen. If thats true I can't even imagine the turbo lag your going to have. I went with a smaller T3 because I couldn't stand making full boost near 4,000 rpms. I hate turbo lag. But when the turbo kicked in it hit real hard.

 
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Barney made over 300whp at 18 psi.

 
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You can tune around lag to an extent. Trust me.


There are some side effects of this too.

 
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thank you to andy and dezod for backing up exactly what I was trying to state. ..

 
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he has an srt4

 
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thats right, i have an SRT4...and i still have my 7thgen, but it isnt boosted any more....


mike, i just might have to get you to build me one of them there manifolds that you built for your buddies SRT4

 
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thanks guys for all of your input, and I agree with you it's not about how much boost you run but it's how much power you make with it. It's all about tuning. I was just saying has anyone put like 25psi on d17 and made anywhere near 400hp to 500hp, I really don't think so because I don't think our motors can handle it and to top it off the transmissions definitely can't handle it. So when you compare our motors with other honda motors they just aren't up to par for making big power. But, this is just what I think, do you guys agree??

 
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B series were more boost friendly and less prone to breaking down, a lot of people think that as an engine they were really quite over-spec-ed. I think the K series is less overspeced, plus not to mention that its a larger displacement engine, so you're making more power. As for the D series, its an economy engine, stock spec. is probably down to a T, no upper ceiling for more power except the stock specs.