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Old 06-21-2014, 06:22 PM   #51
kellygnsd
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Pump and meth 500whp/416 lb-ft. tune is 24 psi, racegas tune is 36 psi tapering to 24 at redline and made 551 lb-ft of torque. All that boost is midrange only due to EFR actuator.
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Old 06-21-2014, 08:41 PM   #52
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Quote:
Originally Posted by spoolinsti05 View Post
Why so much boost? The numbers should be higher for all that boost no? I'm only at 28psia via the Cobb and making 500 on a mustang dyno.
Those set-ups are not a good comparison for the boost to whp ratio seeing yours flows around 15.5 lbs/min. more than his does. Apples to Oranges.
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Old 06-22-2014, 11:11 AM   #53
spoolinsti05
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Quote:
Originally Posted by Scuby04STi View Post
Those set-ups are not a good comparison for the boost to whp ratio seeing yours flows around 15.5 lbs/min. more than his does. Apples to Oranges.
That's not to much more.
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Old 06-22-2014, 11:30 AM   #54
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Originally Posted by spoolinsti05 View Post

That's not to much more.
You are literally stupid
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Old 06-22-2014, 11:33 AM   #55
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15 lb difference is about a 150whp potential difference in flow and that's nothing to sneeze at.
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Old 06-22-2014, 12:16 PM   #56
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[quote=spoolinsti05;42142600]That's not to much more.[/QUICK OTE]

Go look up a turbo calculator, those really point out how big of a difference 15.5 lbs/min can potentially be.
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Old 06-22-2014, 12:40 PM   #57
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You are literally stupid
I love this site!
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Old 06-22-2014, 08:11 PM   #58
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I love this site!
Thankfully "you're" here then huh?
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Old 06-22-2014, 09:34 PM   #59
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Originally Posted by spoolinsti05 View Post
Thankfully "you're" here then huh?
Not sure what that means, but 28 psi on X turbo vs a turbo that can flow 15 lbs/min more is not even close to apples to apples.
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Old 06-23-2014, 12:56 AM   #60
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Originally Posted by LittleBlueGT View Post
Not sure what that means, but 28 psi on X turbo vs a turbo that can flow 15 lbs/min more is not even close to apples to apples.
One obviously doesn't need as much boost as he does that's all. Probably why he runs 36 and I run 28 and I make 500 on mustang he makes 550 dynojet I'd say that's fairly comparable :/
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Old 06-23-2014, 02:02 AM   #61
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It is not the peak boost that is of concern, it is the boost/rpm/hp level that can be compared to see the difference in turbos.

Ie: VF turbo might hit 23 peak, but it tapers to 14/15 psi. Would make the same peak who if it was 20 psi tapering to 14/15
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Old 06-23-2014, 02:16 AM   #62
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Quote:
Originally Posted by spoolinsti05 View Post
One obviously doesn't need as much boost as he does that's all. Probably why he runs 36 and I run 28 and I make 500 on mustang he makes 550 dynojet I'd say that's fairly comparable :/
Isn't that what they have been saying the whole time? My turbo will require more boost to make the same power as yours because of the 15.5 lbm difference in flow? A little slow on the uptake maybe?

I also taper to 24psi by redline. The 36 psi is mostly midrange and my 2.34L motor makes its power at redline. I attached a boost plot.

Good gas 547 whp dyno pull


Pump and meth 493 dyno pull


green = throttle position
blue = boost
orange = AFR target
purple = AFR
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Old 06-23-2014, 07:06 PM   #63
spoolinsti05
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Yes and I'm saying it's really not apples and oranges considering the boost you run and the boost I run lol
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Old 06-23-2014, 07:14 PM   #64
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I love lamp
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Old 06-23-2014, 07:20 PM   #65
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Quote:
Originally Posted by spoolinsti05 View Post
Yes and I'm saying it's really not apples and oranges considering the boost you run and the boost I run lol
different engines, different turbos, different fuels, running different levels of boost, located on opposite sides of a continent.



yep, basically twins
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Old 06-23-2014, 07:48 PM   #66
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This is a good example why you should never go full retarded
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Old 06-23-2014, 09:33 PM   #67
spoolinsti05
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Making nearly the same power lol go on! Actually mustangs read what 18% lower? So I'd be around 580? Who cares they're close
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Old 06-23-2014, 09:35 PM   #68
kellygnsd
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Are you on E85?
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Old 06-25-2014, 05:07 AM   #69
kellygnsd
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So I recently picked up a Walbro 460 pump for my inevitable switch to E85 and to combat this


My base fuel pressure is 50 psi my pump isn't able to keep up with demand and by 6,700 rpm differential fuel pressure drops down to 33 psi. I have no problems hitting target AFR and I still have a ton of headroom but I wonder how poor the spray pattern gets at such low DP's and how the changing pressures affects the injector dead times.

I can't remember exactly what pump I have in the car now but its either the DW300 or aeromotive 340(I'm leaning towards the DW) and it is not hardwired so I may hardwire the DW pump first to see what gains are made before I install the 460 pump. On race gas the drop is even worse with 36 psi of boost on top of the base pressure.


Differential fuel pressure drops down to 30 psi on the racegas a 20 psi drop from base pressure.

My 1150cc injectors flow about 193 L/h at 70% IDC and I thought the DW pump should have been able to put that out at 74 psi. Am I wrong? I guess my voltage drop is pretty substantial and we'll see the difference after the hardwire

I'm looking for fuel system recomendation for when I switch to E85 so if you got'em, let me hear'em


Legend

Top plot:

yellow => IDC

Middle plot:

yellow => differential fuel pressure
purple => MAP
blue => fuel pressure

bottom plot:

orange => AFR target
light blue => Wideband AFR
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Old 06-25-2014, 12:10 PM   #70
spoolinsti05
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I'm using every bit of my 460lph
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Old 06-28-2014, 05:08 PM   #71
kellygnsd
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Thumbs up

Driving around late last night with the GoPro I decided to take a little video. Here is a quick 2,3,4th gear pull to 8K rpm getting on the freeway at about 3 a.m. Boosting about 23 psi

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Old 06-28-2014, 05:12 PM   #72
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Quote:
Originally Posted by kellygnsd View Post
Driving around late last night with the GoPro I decided to take a little video. Here is a quick 2,3,4th gear pull to 8K rpm getting on the freeway at about 3 a.m. Boosting about 23 psi

Video Link: http://youtu.be/lE8c6Wo1E1s
I just came a little. This is on pump/meth right?
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Old 06-28-2014, 05:52 PM   #73
kellygnsd
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Yeah, pump and meth. When I get the new fuel pump installed I'll be cranking up the boost to maybe to 26-27 psi.
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Old 06-28-2014, 06:39 PM   #74
spoolinsti05
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Little stumble in 4th @ 7k who's your tuner?

Your fuel pressure shouldn't drop below what it can deliver if you holding 60psi it shouldn't drop below that.

Your idc must be like 130% on 36psi lol

Last edited by spoolinsti05; 06-28-2014 at 06:49 PM.
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Old 06-28-2014, 06:47 PM   #75
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Man how much do you love this thing in the street? I'll run e85 so it'll be close to that c16. I'm so ready to get this build done!
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