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Old 12-19-2011, 01:13 AM   #5101
maxpowr
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ron showed me this awesome new search engine called google.
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Old 12-19-2011, 01:37 AM   #5102
Visconti
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Ya I already emailed them and will check with world PAC tomorrow.

Nice to finally have both subie in the garage



image-1201333988.jpg
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Old 12-19-2011, 02:07 AM   #5103
maxpowr
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did you get the bugeye from junior?
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Old 12-19-2011, 02:28 AM   #5104
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How far will ID1000's and dual in-tank modded Walbro's take me? I'm running a 2.5 with +1 valves, 272's, and I really want to max out my atp 35r(28-30psi?)...
If I crank the base fuel pressure to 70psi,80psi can I get there?
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Old 12-19-2011, 08:02 AM   #5105
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good question!

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Quote:
Originally Posted by Turbovan
How far will ID1000's and dual in-tank modded Walbro's take me? I'm running a 2.5 with +1 valves, 272's, and I really want to max out my atp 35r(28-30psi?)...
If I crank the base fuel pressure to 70psi,80psi can I get there?
We maxed out FIC1150cc's at 25lbs of boost on 52lb turbo. I am most likely wrong but i would think to max out a 35r you need bigger injectors and fuel pumps cause at 80psi base pressure your walbros will die quick.
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Old 12-19-2011, 08:39 AM   #5106
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Quote:
Originally Posted by Turbovan
How far will ID1000's and dual in-tank modded Walbro's take me? I'm running a 2.5 with +1 valves, 272's, and I really want to max out my atp 35r(28-30psi?)...
If I crank the base fuel pressure to 70psi,80psi can I get there?
Nope.

You barely have enough injector to do that on pumpgas..

You'll need bigger injectors
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Old 12-19-2011, 08:40 AM   #5107
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Quote:
Originally Posted by maxpowr
did you get the bugeye from junior?
Nope lol
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Old 12-19-2011, 09:05 AM   #5108
maxpowr
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roger that, over. a while back he bought a white bugeye from a friend of mine. that is all.
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Old 12-19-2011, 09:57 AM   #5109
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Quote:
Originally Posted by maxpowr
roger that, over. a while back he bought a white bugeye from a friend of mine. that is all.
I believe that's lives in MA now
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Old 12-19-2011, 12:16 PM   #5110
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Quote:
Originally Posted by maxpowr
im not on E yet bit you guys really need to communicate...what build, what plug, what gap...
Ej257 with CP 9:1 pistons
26psi peak boost
Copper stock heat range at .022

I probably didn't need to gap so small but its working for me

Phatron tuning FTW!
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Old 12-19-2011, 12:53 PM   #5111
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good question!

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Why is everyone using copper? The E85 eats the copper and it has a much less powerful spark? Why not run a laser iridium plug that has a more powerful spark and doesn't get corroded by the ethanol?
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Old 12-19-2011, 12:56 PM   #5112
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cause coppers have proven to work better on e85. especially for larger turbos running higher boost.
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Old 12-19-2011, 01:02 PM   #5113
buddsautoparts.com
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good question!

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Interesting, I was just wondering. After talking with the crazy spark engineers at NGK and Denso they were telling me that running copper made no sense, and in fact was a terrible idea. Then when you get on here that's what everyone is running
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Old 12-19-2011, 01:13 PM   #5114
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it may be some sort of a limitation of our stock ignition system, rather than being copper > iridium

maybe iridium require more amperage and just dont do well on our stock system.

but coppers seem to cure idle/misfire and high rpm blowout issues at high boost.

but even coppers dont work for the folks on gt35/hta86 turbos....most of them are utilizing some variant of a boost a spark.
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Old 12-19-2011, 08:25 PM   #5115
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Yep E85, Hta86, Coppers, and a Boost-a-spark is what Im running. Works very well at low boost (25psi). We will see come spring if this setup is up to the challenge at higher boost levels.
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Old 12-20-2011, 12:34 AM   #5116
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Quote:
Originally Posted by Turbovan View Post
How far will ID1000's and dual in-tank modded Walbro's take me? I'm running a 2.5 with +1 valves, 272's, and I really want to max out my atp 35r(28-30psi?)...
If I crank the base fuel pressure to 70psi,80psi can I get there?
I max 1280cc at 22 psi, you need bigger .
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Old 12-20-2011, 01:04 AM   #5117
wrxsubiemod
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Edit: mis read

Last edited by wrxsubiemod; 12-20-2011 at 01:13 AM.
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Old 12-21-2011, 10:26 AM   #5118
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Quote:
Originally Posted by gaby View Post
I max 1280cc at 22 psi, you need bigger .
Was this at factory fuel pressure? Will 1600's at factory pressure and duel walbros max out my 35r?

Last edited by Turbovan; 12-21-2011 at 10:43 AM.
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Old 12-21-2011, 10:50 AM   #5119
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Quote:
Originally Posted by Turbovan View Post
Was this at factory fuel pressure? Will 1600's at factory pressure max out my 35r?
Factory pressure is about 45psi, but add 1 psi per pound of boost you will run. That said, you need a good fuel pump to keep not just the psi but the volume of fuel at higher psi (think of ex. a big turbo CFM's vs a small turbo at the same psi ). You should be good with 1600cc. I'm using FIC 1680cc with a Walbro 400. my idc's at 27 psi of boost with stock base pressure are close to 92% with 11.2 afrs( not that in at 11.2 but just a reference).
2.5l 3582r turbo.
488hp so far.
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Old 12-21-2011, 11:53 AM   #5120
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Quote:
Originally Posted by gaby View Post
Factory pressure is about 45psi, but add 1 psi per pound of boost you will run. That said, you need a good fuel pump to keep not just the psi but the volume of fuel at higher psi (think of ex. a big turbo CFM's vs a small turbo at the same psi ). You should be good with 1600cc. I'm using FIC 1680cc with a Walbro 400. my idc's at 27 psi of boost with stock base pressure are close to 92% with 11.2 afrs( not that in at 11.2 but just a reference).
2.5l 3582r turbo.
488hp so far.
you realize that your fuel pump is not keeping up right...at 70psi the walbro 400 flows close to 320lph (this is assuming you ran independent wiring from the battery to the fuel pump...if you didn't it is only flowing about 280-300lph), but your injectors at 92% IDC are requesting close to 370lph and at 100% IDC your injectors are asking for around 400lph...you get more fuel pump and i bet your IDC's come down...

if you take your injector max flow, convert it to lph instead of cc/min, and then multiply it by 4 (since you have 4 of them), this gives you the flow of your injectors at 100% duty cycle. if this number is higher than your fuel pump flow at the boost pressure you are running, then your fuel pump isn't big enough, and your injectors will be compensating for the low output of the pump by increasing the length of time they are open.

for example:

...your injectors flowing 1680cc/min = approx 1.68L/min...

...then multiply 1.68L/min x 60min = 100.8LPH...

...then multiply 100.8LPH x 4 injectors = 403.2LPH at 100% IDC...

...to get 92% IDC just take 403.2LPH x 0.92 = 370.944LPH...
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Old 12-21-2011, 12:57 PM   #5121
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Quote:
Originally Posted by amalgrover View Post
you realize that your fuel pump is not keeping up right...at 70psi the walbro 400 flows close to 320lph (this is assuming you ran independent wiring from the battery to the fuel pump...if you didn't it is only flowing about 280-300lph), but your injectors at 92% IDC are requesting close to 370lph and at 100% IDC your injectors are asking for around 400lph...you get more fuel pump and i bet your IDC's come down...

if you take your injector max flow, convert it to lph instead of cc/min, and then multiply it by 4 (since you have 4 of them), this gives you the flow of your injectors at 100% duty cycle. if this number is higher than your fuel pump flow at the boost pressure you are running, then your fuel pump isn't big enough, and your injectors will be compensating for the low output of the pump by increasing the length of time they are open.

for example:

...your injectors flowing 1680cc/min = approx 1.68L/min...

...then multiply 1.68L/min x 60min = 100.8LPH...

...then multiply 100.8LPH x 4 injectors = 403.2LPH at 100% IDC...

...to get 92% IDC just take 403.2LPH x 0.92 = 370.944LPH...
I was looking for that formula last night and could not find it, thanks. I am running the pump with a 12g from battery but going to install a second 400 pump to run it with stock regulator set to 100% 20 psi via sd rom.
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Old 12-29-2011, 04:57 PM   #5122
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07 EQ built and tuned sti..made 347whp @ 5700 rpm and 399wtq @ 3700 rpm on e85 @ 22.5 psi

-EQ stage 1 block
-EQ stage 1 head
-FP 68HTA turbo
-Ebay tmic heat treated
-Cobb ap
-Perrin inlet
-APS 70mm cai
-Hallman mbc
-TurboXS stealth back w/spt 3" axle back
-Cosworth air bump Delete
-NGK one step colder spark plugs
-Walboro 255
-DW 1300cc injectors
-Grimspeed TGV deletes
-RPS clutch

Just a update...

Added perrin el headers and a invidia g200 axle back and made 376whp and 440wtq on EQ Tunings low reading dyno!
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Old 12-29-2011, 06:01 PM   #5123
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so with FIC 1680cc and a walbro 400 with fpr on fp red, I'll be running out of fuel pump? Shooting for around 25-26psi
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Old 12-29-2011, 06:10 PM   #5124
maxpowr
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thats a big update...
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Old 12-29-2011, 07:43 PM   #5125
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Quote:
Originally Posted by bjohnson_55 View Post
so with FIC 1680cc and a walbro 400 with fpr on fp red, I'll be running out of fuel pump? Shooting for around 25-26psi
well assuming you are running stock fuel pressure...if you ran dedicated wiring to the walbro 400 from the battery, it will flow enough to run your 1680's to about 78% IDC before the injectors start compensating for the pump running out of flow. If you didn't run dedicated wiring from the battery, it will flow enough to run your 1680's to about 72% IDC before it starts needing the injectors to pick up the slack. with dedicated wiring going to the walbro, it SHOULD be enough to max out the FPRED, but it will be fairly close.

to be able to have enough flow to actually max out your 1680's, you need a fuel pump that flows just over 400lph at 70psi. thats alot of fuel.

unless you have fully built heads and plan on turning up the boost to 28 or 30psi eventually, i think the walbro 400 with dedicated wiring from the battery will be just enough for you, and even if it isn't, your tons of extra injector will be more than capable of compensating for that last little bit.
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