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10psi with just a walbro 255 too much?!

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Old 09-25-04, 05:06 PM
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Ryu
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10psi with just a walbro 255 too much?!

is 10psi on stock injectors and turbo too much even with a walbro 255? reason i'm asking is i'm trying to figure out what to have my high boost set at right now on my boost controller.
Old 09-25-04, 05:47 PM
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I would say that would be fine! do you have an fcd??? also you may want to rewire your fuel pump
Old 09-25-04, 05:59 PM
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10psi on the stock injectors and an upggraded pump is fine. The trick is keeping it from going over 10psi...
Old 09-25-04, 07:34 PM
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As far as I'm concerned, 10psi with a stock fuel pump is just peachy keen. For some reason I don't have the lean conditions others experience on this forum. Got me as to why.

IMHO you have more to fear with the 200 degree plus intercooler intake temps with a stock intercooler (yeah, I know, flood the thing with fuel to overcome the temps....which I'll say is a bullshit way of overcoming the temps).
Old 09-26-04, 09:00 AM
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So true. And yet when you suggest a FMIC for a mildy-modded car people bleat about them not being necessary or not worth the money...
Old 09-26-04, 12:22 PM
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Originally Posted by NZConvertible
So true. And yet when you suggest a FMIC for a mildy-modded car people bleat about them not being necessary or not worth the money...
The FMIC was the first mod I put on my, at-the-time mildly modded, car b'c I knew It was fundamental to what I was trying to achieve. If more members followed the basic hierarchy of progressive mods, there would be far more reliable FC's out there. ie. FMIC > upgraded FP > FI's > Turbo

Or do It right and get a standalone EMS (latter point Is dependant on what you really want out of your FC).
Old 09-26-04, 12:36 PM
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Aww, I too believe in the hierarchy as you worded it. And I also believe in proper maintenence. But you are right not as many people out there do. Give you an example I HAVE a t4/t3 turbo. Have I installed it? NO! why? Cause everything else, ie: injectors, fuel managment, FMIC, isnt in place yet.
Old 09-26-04, 02:18 PM
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Ryu
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i do have a FCD and i do have the fuel pump rewired. i've also got my WG ported so that both holes are 27mm. i don't get ANY creep, even in 5th gear at WOT on the highway.
Old 09-27-04, 04:37 AM
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It's funny how people list the FCD like its a safety mod, when it's quite the opposite...
Old 09-27-04, 04:48 AM
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oops...

Last edited by NZConvertible; 09-27-04 at 04:51 AM.
Old 09-27-04, 07:53 AM
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well I said fcd because you need the fcd to go above 8.6psi and he wants to putsh 10psi so that is kind of a nessesaty in his case
Old 09-28-04, 10:44 PM
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Talking

Originally Posted by NZConvertible
It's funny how people list the FCD like its a safety mod, when it's quite the opposite...
Hillarious ! ! ! but true..
Old 09-28-04, 11:05 PM
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Originally Posted by HAILERS
As far as I'm concerned, 10psi with a stock fuel pump is just peachy keen. For some reason I don't have the lean conditions others experience on this forum. Got me as to why.

IMHO you have more to fear with the 200 degree plus intercooler intake temps with a stock intercooler (yeah, I know, flood the thing with fuel to overcome the temps....which I'll say is a bullshit way of overcoming the temps).

i actually ran 10psi on a large streetport (kevin landers porting) engine and was in the high 12's AFR's in the midrange. it WAS on a 90* day (and the ac was broke inside the dyno shop) with a starion FMIC and a walbro.

however my fuel filter has NEVER been changed in 180k miles so i think this could be a problem for my fuel situation...
Old 09-29-04, 05:12 PM
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Ryu
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my car feels damn strong at 10psi on this motor. it actually feels stronger then 15psi on the last motor. i guess thats the difference in great compression and poor compression. can't wait to get an SAFC and tune it some with some larger 2nd-aries.
Old 09-29-04, 05:45 PM
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Derek,

My TII has been running between 12-14psi with stock primaries and 680cc secondaries with a Walbro 255 and an SAFC since I've owned it. No problems to speak of what so ever. Just thought I'd throw that in there.

Zach
Old 09-29-04, 05:48 PM
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Originally Posted by Ryu
my car feels damn strong at 10psi on this motor. it actually feels stronger then 15psi on the last motor. i guess thats the difference in great compression and poor compression. can't wait to get an SAFC and tune it some with some larger 2nd-aries.
WOW, I hope you changed it since!! I change my once a year - if you haven't done it, get to pep boys and pick one up. It can be a messy job, but it doesn't take long. Dude, 180K and 14 years = no good hehe
Old 09-29-04, 06:04 PM
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Ryu
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i'm a little confused by your post. i have changed the fuel filter about 4 months ago and i had my injectors professionally cleaned and balanced by RC Engineering 1 month ago. pretty much, like Zach said, if i get an SAFC and some larger 2nd-aries i'll be able to safely boost 12-14psi.
Old 09-29-04, 06:34 PM
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I was responding to mill's post, sorry - I hit the wrong quote hehe
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