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Joined: Sep 2000
Posts: 9,602
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Hard-core CEG'er
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Posts: 9,602 |
Nice sounding numbers. Congrats.  WHERE's THE GRAPHS MAN!!!!  
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Old Numbers (2.5L)
271FWHP / 210FWTQ
New Numbers
298FWHP @ 7000 / 245FWTQ @ 5700
Also it is hard to "directly" compare the graphs because the old one was done with no rpm signal.
You can tell the 2.5L and it's split port manifolds made better TQ & HP in the low and mid-range (per displacement)
It also "appears" that now it does not hold the torque as well but it's hard do more than speculate since the torque data is missing on the old dyno beyond "roughly" 6300rpm.
I wonder how the boost level compared between the runs as well???
More boost now???
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: May 2003
Posts: 495
CEG\'er
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CEG\'er
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Posts: 495 |
Originally posted by warmonger:
Still, if you were able to make 300 wHP with 24# injectors and stock MAF, then I once again pose the question of:
WHY THE F'in HELL people are looking to slap 42#'rs in their cars???? 
Why? Well according to this table http://www.rceng.com/technical.htm, in order to run that much HP on 24s he needs around 100psi not including the psi to negate the boost psi. And that's at 100% injector duty cycle and .60 specific fuel consumption.
The reason it's BETTER to run larger injectors is so you can run the lowest fuel psi you can and keep your injector duty cycle at no more than 85%.
With 42s, he could run fuel pressure of 42psi at .60 specific fuel consumption and never see more than 85% injector duty cycle. Easier on the injectors and fuel pump that way.
When TurboTom first came to the Focaljet and said he was running 42s for 200whp everybody scoffed at him and now it's standard practice that to run 200whp safely on a Zetec you need 42s and that's why I bought them. So for V6s, if you want to run 300whp safely, you also need 42s.
Needles to say, what kind of fuel psi you runnin and UPGRADE YOUR INJECTORS QUICK!
2000 Rio Red I4 Cougar
200whp & 210wtq at 9psi
254whp & 276wtq with NX 35shot
WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip
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Joined: Jul 2001
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Alright guys... I get it. I will be upping to 30# injectors (Warmonger, I agree that 42#'rs may be a bit excessive, unless I can get them for cheaper than 30#rs). I do not like running my 24#rs at 100% duty cycle.
I did not change the boost pulley. I was making about 9.5 PSI @ 7600 RPM on the 2.5L. I am now making roughly 7.75 PSI @ 7000 RPM. The displacement is larger so therefore it takes more to build boost. I am not running all the way to 7600 RPM any longer, either. I am happy with that much boost as I feel confident that I will not overboost my current setup. I also have a ton of room to play now. There should be no problems hitting 310-320 FWHP with a tank of 109 Octane. I may get a smaller boost pulley, but for now there is no real need.
SVT Parts For Sale!PM Me.
2006 M6 Cyclone Gray GTO
1995 Mazda Protege Commuter Special
93 FXDWG Dyna Wide Glide
I'm A TROLL Now!~
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Joined: May 2003
Posts: 495
CEG\'er
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30lbs  With 30lb/hr injectors you'll need to run 80psi fuel pressure and hit 85% duty cycle in order to get .60 specific fuel consumption. If you run them 100% you only have to run 60 psi. Go for the 42s, or at least 36s. Click on the link I posted, that will tell you what you need.
2000 Rio Red I4 Cougar
200whp & 210wtq at 9psi
254whp & 276wtq with NX 35shot
WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip
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Joined: Mar 2001
Posts: 1,279
Hard-core CEG\'er
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Hard-core CEG\'er
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I went with 36#'ers... I think 42's are overkill as well.
Previous Owner of 00 SVT Contour #1077/2150 
95 Contour SE '01 3L 
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Posts: 976
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Originally posted by Seawulf:
30lbs
With 30lb/hr injectors you'll need to run 80psi fuel pressure and hit 85% duty cycle in order to get .60 specific fuel consumption. If you run them 100% you only have to run 60 psi. Go for the 42s, or at least 36s.
Click on the link I posted, that will tell you what you need.
Seawulf I know the numbers sound crazy but those are estimates your using, one of those estimates is drastically different on a V6 versus other cars, it has to be because otherwise Jason would have blown his from being to lean because the estimates say he would have ran out of fuel completely and he didn't he still had enough for a 12.5:1 AF. Same with mine I had 42's and it was way overkill, when we ran the 303 FWHP we were running so pig rich to prevent detonation and it still pinged slightly, hence we backed it down to 278 FWHP and had to cut a TON of fuel in order to make right. I don't know what it is but these car DO NOT follow the normal estimates. 30's will be fine for Po-Jay.
I offer PnP Heads for all durtec's details at PnPheads.com or jesse@pnpheads.com for details.
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Joined: May 2003
Posts: 495
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CEG\'er
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Posts: 495 |
What kind of fuel pressure are you running on 30s and still getting a good A/F? With 42s you can run 45psi and 80%injector duty cycle and not worry about burning out the injectors or fuel pump.
I've had this site checked out by two people who's opinion I respect and they said the numbers check out.
2000 Rio Red I4 Cougar
200whp & 210wtq at 9psi
254whp & 276wtq with NX 35shot
WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip
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Joined: Aug 2001
Posts: 976
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I ran 42psi of fuel pressure with the 42's and it was fine. IIRC Po-Jay was running no more then 50 psi because he removed the FMU and used the larger injectors. I forgot he is return fuel  I don't think SF would tune a car with over 80 psi of fuel pressure when they know it can run at stock levels and use a large enough injector to handle it.
I offer PnP Heads for all durtec's details at PnPheads.com or jesse@pnpheads.com for details.
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Joined: Jul 2001
Posts: 829
Veteran CEG\'er
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I am not gonna burn out a Walbro 255. I stand a chance of finding a leak in the Franken-Fuel-Rail though. I have not checked PSI in the rail this time. I was >100psi with the FMU in the past though.
SVT Parts For Sale!PM Me.
2006 M6 Cyclone Gray GTO
1995 Mazda Protege Commuter Special
93 FXDWG Dyna Wide Glide
I'm A TROLL Now!~
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