Willie

Will b egoing to my tuners in the the next couple of weeks, so what sort of hp and psi should asking them to tune my car to? Heres my setup:

b16a2
garret t25bb
walbro 255 fuel pump
A.E.M f.p.r.
450cc injectors
F.M.I.C.
2.5" D/P
Crome

adseguy

I always look at the limiting factor when tuning and work around that. For your setup it's going to be that tiny turbo. I'd say 250whp would be good. It could take a lot of PSI, but who cares that's not what breaks engines

Willie

Nice one man, but what kind of pressure do you think it would take to get 250whp out of a t25bb? And do you think my stock block will handle 250whp coz ive seen b16a2's blow at 10psi on this forum.

adseguy

PSI is not what blows up engines it's a bad tune and/or how much power they are putting out.

I run 16PSI all day long and make 300whp, but I tuned it myself (very well might I add ). It could blow at 4PSI and it can hold fine at 20PSI.....like I said it's the tune and power putting down. 300whp is right around the limit on a stock engine, but that turbo will only do abut 250whp so aim for that

Willie

Thats a bit more reasuring so to get 250 do you think il be looking at around 10psi?

kameleon23

With a b16 on stock sleeves, its gonna take a lot more than 10 psi with that turbo to get to 250 whp. like adseguy said though...psi doesnt mean anything....theres not a set amount of psi your motor can hold, it depends on the tune and overall hp range

adseguy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willie &raquo;</TD></TR><TR><TD CLASS="quote">Thats a bit more reasuring so to get 250 do you think il be looking at around 10psi?</TD></TR></TABLE>

No probably 15PSI or more. Remember stock WRX's are at 16PSI and some older cars are at 20PSI+ on totally stock engines with zero upgrades.....You sound very set on 10PSI and that's not the correct way to think. Go to a tuner

Willie

I sound set on that coz i never see anyone pushing stock b16a's more than 10psi on this forum. Im just scared coz its my first project and dont want everything to wrong as ive done eveything right up to now and took my time but when it comes to tuning i honestly dont have a clue. My tuner has a very good rep but here in the uk no ones heard of crome. Ive done my research and i chose crome over hondata coz i want to learn how to tune myself. I just want to do things here in the uk that no one does but do it right

Willie

bump adseguy

SiKid86

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willie &raquo;</TD></TR><TR><TD CLASS="quote">I sound set on that coz i never see anyone pushing stock b16a's more than 10psi on this forum. Im just scared coz its my first project and dont want everything to wrong as ive done eveything right up to now and took my time but when it comes to tuning i honestly dont have a clue. My tuner has a very good rep but here in the uk no ones heard of crome. Ive done my research and i chose crome over hondata coz i want to learn how to tune myself. I just want to do things here in the uk that no one does but do it right</TD></TR></TABLE> maybe its because they're using bigger turbo's

Willie

Well if i knew then what i kow now sikid id probably piece my own kit or gone for a full race. I bought a tsi kit and ive ended up scrapping half of it. Lifes a bitc i guess

adseguy

Keep reading. Once you truely realize why you can go past 10PSI very safely especially on a small turbo you will understand why I stated this. Don't take advice from me or others. Read up yourself...understand the "physics" of it all and then things will become clear. Otherwise pay for a tuner and trust him with your whole car. GL

Willie

Respect!!!1

Willie

With the b16 being high compression i just that that pushing 15psi even with a good tune may be risky. Whats the best way to start understanding the physics

King Tut33

You didn't mention a 2.5 or 3 bar map sensor so it sounds like you will be keeping it at 1 bar until you upgrade. So I say 200 whp at 1 bar.

adseguy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willie &raquo;</TD></TR><TR><TD CLASS="quote">With the b16 being high compression i just that that pushing 15psi even with a good tune may be risky. Whats the best way to start understanding the physics</TD></TR></TABLE>

Ahh the great myth. If you can't explain why this myth is true then it DEF. isn't. That's why you should listen to people that give solid reasoning behind a statement and not just "uhh....it's got high compression....that's not good for boost" I could explain why, but there are enough threads around that answer this that you need to read up anyway

Willie

How much and where can i get a decent 3bar map sensor from. I think the high compression myth can be my next venture. Does anyone care to give a solid explanation i would much prefer it, then il do a search aswell

SiKid86

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Willie &raquo;</TD></TR><TR><TD CLASS="quote">How much and where can i get a decent 3bar map sensor from. I think the high compression myth can be my next venture. Does anyone care to give a solid explanation i would much prefer it, then il do a search aswell</TD></TR></TABLE> LoL its not too hard to take in.. Really the lower the compression the more room you have for error on tuning.. But with a higher compression your more likely to knock or detonate so your running a higher chance on messing your **** up.. running high compression isn't the issue its the tune/er which makes your **** blow up.. So in short low compression makes chance for knock go down.. High CR makes it go up! [chub's voice] It's all in the tune It's all in the tune[/chub's voice]

adseguy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiKid86 &raquo;</TD></TR><TR><TD CLASS="quote">[chub's voice] It's all in the tune It's all in the tune[/chub's voice] </TD></TR></TABLE>

LOL

Willie

Had a long chat with the tuner and he says that he doesnt really to push it past 10psi, anything past is probably a time bomb waitng to explode. I guy just blew his b18 at 14psi stock and that was as soon as it hit 14psi it didnt hold up for one second

Flr Power

It's all in the tune...

Willie

Well if i run 10psi il be gutted if i dont make more thn 200whp using my t25. If take my cat off how much more power can i expect to gain?

SiKid86

not enough to justify the increased pollution your putting into the air. With that t25 on your b16 its gonna spool up fast but its gonna choke it on the top end where that motor loves to be. If you don't have a manifold yet.. I'd highly suggest on getting a t3/t4 turbo.