More boost
 

Can i turn my boost up to .9 from .8 and not sacrifice too much reliability,

apexi pfc
fmic
bov
catless
air filters
street port

What power gains will i see if i do this

how much will it cost

You'll gain 10 or 15 rwhp. Cost? Depends on if you get tuned, and depends on if you blow the motor from running without cats and a stock wastegate :)

Do you have a downpipe or catback? If so you need a boost controller anyway and then go from there.

The stock map in the PFC is good for about 12psi - that's been my findings. More than that and you'll need tuning.

Dale

And fuel. There is no way I would run 0.9 on the PFC (which is really 14 psi, not 13) with the stock fuel system.

Reliability based on boost is an inverse relationship (the more boost, the shorter the life of any engine due to increased stresses), assuming you don't have detonation or coolant seal failure, or some other problem that instantly breaks the engine.

So, IMO, the bottom line is: Slightly more boost is probably OK, since most early engine failures are from a specific problem such as detonation or coolant-seal failure, not marginally-increased wear. As Rynberg said, fuel-supply may be an issue in preventing lean-running, and resultant excessive heat or detonation.

Dave

I think i will leave it, so what is this about having a boost controller anyway?

I was going to ask as, i would liek to turn my boost right down sometimes in teh hope of gaining some extra fuel economy, and setting it so it doesnt go about where ity is now which is slightly more than .8

Im not too sure about this street port as my engine idle is fine although it does hunt sometimes, ie it may not have been done.

thanks all again

You're joking, right? Have you spent even two minutes reading the FAQ? Your are supposed to spend more time reading than posting.

A little harsh,but true..Do a lot of reading and researching and you might just find some answers to a lot of your questions..

This has all been covered a million times. Do a search for midpipe,boost creep, and wastegate.

No im not joking, why would i be? also why does it matter to you? instead of having a go with the above quote a simple yes or no would have done intead of wasting forum space saying that?

Thing is the new posts will generally be a rehash of old ones so get used to it.

Anyway, i was always under the impression boost controllers where optional, i do search the forums but alot of my questions are specific for me,

oh and be expecting a new post on boost controllers if i cant find a tailor made answer for my specific needs

ta

FAQ, Section M. Do you plan to make any contributions to the board?

Wow - I give up. I'm assuming by that response that you are still in high school or the equivalent.

what are your specific needs? Just keep it in this thread

The problem here is that you're just throwing general questions out there, many on subjects that have been covered countless times, when you really need to be doing some research. As such, you end up getting any number of answers that can vary from correct to horrendously wrong (with possible catastrophic implications to your engine), and you have no real way of sorting out the good answers from the bad. It doesn't matter how "tailored" you make the question, or how the "specific" the answer is; if you don't have some of the basic knowledge first, you're just throwing darts with a blindfold on. The point is that if you do plenty of research, the vast majority of your questions get answered. And then if you do have a question by that point, it's usually specific enough that you won't get flamed.