Fp black. 522hp at 25psi.
Evolving Member
Joined: Mar 2008
Posts: 155
Likes: 0
From: MELBOURNE, AUSTRALIA
Also apologies for turning your thread into a pissing contest. Although it is quite funny.
Evolving Member
Joined: Mar 2008
Posts: 155
Likes: 0
From: MELBOURNE, AUSTRALIA
Dynojet dynos are the most constant dyno. We also have dyno dynamic and mustang here (and others), but the dynojet is the most consistent.
Mustang dynos and dyno dynamic dynos read all over the place.
Why do you think the the dynojet "can spit out any number it likes"? I'd like to hear your wrong reasoning.
Mustang dynos and dyno dynamic dynos read all over the place.
Why do you think the the dynojet "can spit out any number it likes"? I'd like to hear your wrong reasoning.
The numbers the dynojet puts out my be consistent, but they are not a true representation of any for of horsepower.
With Mustang and DD, at least they put out figures which are closer to actual horsepower.
At the end of the day dynos are tuning tools, but unless the numbers they put out are actual units of measurement they shouldn't be used for power comparison.
In relation to my comment, "can spit out any number it likes" , it needs to be taken in context with the rest of the sentence, which ends with "but it shouldnt be called horsepower."
The numbers the dynojet puts out my be consistent, but they are not a true representation of any for of horsepower.
With Mustang and DD, at least they put out figures which are closer to actual horsepower.
At the end of the day dynos are tuning tools, but unless the numbers they put out are actual units of measurement they shouldn't be used for power comparison.
The numbers the dynojet puts out my be consistent, but they are not a true representation of any for of horsepower.
With Mustang and DD, at least they put out figures which are closer to actual horsepower.
At the end of the day dynos are tuning tools, but unless the numbers they put out are actual units of measurement they shouldn't be used for power comparison.
How do you know what a DJ puts out inst real HP and that what a MD or DD put out is real HP? I'd love to hear your answer.
And you last sentence. You feel that MD and DD are better to compare since they are "real HP" in your eyes, but they are all over the place and NOT consistent.
And DJs are super consistent but since they dont put out what you believe to be "real HP" , they shouldn't be compared?
Last edited by Boosted Tuning; Oct 26, 2010 at 02:00 PM. Reason: grammer
until this car hits the track and runs a 12.4 @ 118 .. i call BS on these numbers being anywhere near accurate.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
What math are you using? A walbro can supply enough fuel to make well over 500bhp or 500whp on pump gas. Maybe you don't have correct flow numbers for a Walbro? (Although, technically a fuel pump doesn't support HP at all...it supports the amount of mass fuel flow. The HP is based on the tune and setup.)
AMS posted great tests of single and dual Walbro's and their flow rates. Doing some simple math, at 30psi of boost (73.5psi fuel pressure), a single Walbro at 14V can supply enough fuel for 70lb/min of airflow at an AFR of 12:1. Even being conservative with a 10HP:1lb/min mass airflow gives 700HP.
If you want to be even more conservative and say you won't be able to run 12:1 on pump, then even dropping to 11:1 gives over 65lb/min of airflow. The exact amount of horsepower you will get, of course, will depend on the actual tune and setup of the car, though. A fuel pump doesn't support an amount of horsepower...it supports a mass flow of fuel, which then corelates to a mass flow or air, depending on your AFR.
Just so you can see some of the math:
A single Walbro at 14V at 30 psi of boost can flow 220L/Hr of fuel.
Using the specific grav of gasoline of .74 and converting to lb/min gives:
220/60*1000*.74/454=5.98 lb/min of fuel flow
So, that's 6 lb/min of fuel a single Walbro can flow.
At 10:1 AFR, that's supporting 60 lb/min of airflow
At 11:1 AFR, that's supporting 66 lb/min of airflow
at 12:1 AFR, that's supporting 72 lb/min of airflow
Of course these are ideal conditions for pump gas and 14V. 12V will lower the numbers by quite a bit. And, using a different fuel, like E85 will lower it substantially, but you can do the math. But, making a blanket statment that a single Walbro can't support 500 flywheel horsepower is simply ridiculous and ignorant.
AMS posted great tests of single and dual Walbro's and their flow rates. Doing some simple math, at 30psi of boost (73.5psi fuel pressure), a single Walbro at 14V can supply enough fuel for 70lb/min of airflow at an AFR of 12:1. Even being conservative with a 10HP:1lb/min mass airflow gives 700HP.
If you want to be even more conservative and say you won't be able to run 12:1 on pump, then even dropping to 11:1 gives over 65lb/min of airflow. The exact amount of horsepower you will get, of course, will depend on the actual tune and setup of the car, though. A fuel pump doesn't support an amount of horsepower...it supports a mass flow of fuel, which then corelates to a mass flow or air, depending on your AFR.
Just so you can see some of the math:
A single Walbro at 14V at 30 psi of boost can flow 220L/Hr of fuel.
Using the specific grav of gasoline of .74 and converting to lb/min gives:
220/60*1000*.74/454=5.98 lb/min of fuel flow
So, that's 6 lb/min of fuel a single Walbro can flow.
At 10:1 AFR, that's supporting 60 lb/min of airflow
At 11:1 AFR, that's supporting 66 lb/min of airflow
at 12:1 AFR, that's supporting 72 lb/min of airflow
Of course these are ideal conditions for pump gas and 14V. 12V will lower the numbers by quite a bit. And, using a different fuel, like E85 will lower it substantially, but you can do the math. But, making a blanket statment that a single Walbro can't support 500 flywheel horsepower is simply ridiculous and ignorant.
until this car hits the track and runs a 12.4 @ 118 .. i call BS on these numbers being anywhere near accurate.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
wait so your saying that if he can run anything near a 12.4 at 118 then these numbers are somewhat correct... are you kidding me...this is by far the most ignorant statement in the thread.
Last edited by milford; Oct 26, 2010 at 02:04 PM. Reason: spelling
until this car hits the track and runs a 12.4 @ 118 .. i call BS on these numbers being anywhere near accurate.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
- i dont care what it runs, but with the mods mentioned hes no where near 500 dynojet at 25psi sorry.
until this car hits the track and runs a 12.4 @ 118 .. i call BS on these numbers being anywhere near accurate.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
on 93 with 30 psi, i just made 481 hp on a mustang.. theres zero chance in hell this thing made over 425 on any dyno with out a mutiplier of some crazy proportions.
OP - get ready for some disappointing numbers from the 1320... it doesnt lie.
either your an idiot or dont know how to drive or both.
i just said the car felt like a low 11 sec car. what is that around 420-430hp which is correct after the correction factor. i know how the car reacts.
All I have shown is what a single Walbro can support in terms of mass fuel flow and mass airflow at a fuel pressure of 73.5psi (or boost pressure of 30 psi, assuming stock 43.5 fuel pressure) at 14V.
Our fuel pressure regulators simply raise fuel pressure 1:1 with boost pressure so that the injectors are always working against the same pressure. However, we aren't discussing injectors here.
Maybe I'm missing something you're eluding to? What backpressure are you referring to?
I'm not sure what you are referring to or what you are refuting, so care to elaborate?
All I have shown is what a single Walbro can support in terms of mass fuel flow and mass airflow at a fuel pressure of 73.5psi (or boost pressure of 30 psi, assuming stock 43.5 fuel pressure) at 14V.
Our fuel pressure regulators simply raise fuel pressure 1:1 with boost pressure so that the injectors are always working against the same pressure. However, we aren't discussing injectors here.
Maybe I'm missing something you're eluding to? What backpressure are you referring to?
All I have shown is what a single Walbro can support in terms of mass fuel flow and mass airflow at a fuel pressure of 73.5psi (or boost pressure of 30 psi, assuming stock 43.5 fuel pressure) at 14V.
Our fuel pressure regulators simply raise fuel pressure 1:1 with boost pressure so that the injectors are always working against the same pressure. However, we aren't discussing injectors here.
Maybe I'm missing something you're eluding to? What backpressure are you referring to?
pressure drop is a ***** and with a walbro at roughly 500whp on up, it starts dropping fast. at 30psi you are supposed to have 73.5psi, but most likely have 65psi or less and have to jack up the idc to keep it from going lean. its a hack solution and a proper fuel system will never run below its specified base+boost pressure during running conditions.
Well said.
When i first got my evo and logged onto EvoM i was super impressed with the results from the USA, but as i learned more i discovered what most people knew, which was DynoJets read alot higher than most dynos. Since then i understand why cars in other countrys seem to be 10-20% down on power compared to USA cars. But your right, the dyno results sometimes sound modest but as you mentioned its the track times that matter.
Yeah, a low 11sec car in Aus is ~400whp.
Also apologies for turning your thread into a pissing contest. Although it is quite funny.
When i first got my evo and logged onto EvoM i was super impressed with the results from the USA, but as i learned more i discovered what most people knew, which was DynoJets read alot higher than most dynos. Since then i understand why cars in other countrys seem to be 10-20% down on power compared to USA cars. But your right, the dyno results sometimes sound modest but as you mentioned its the track times that matter.
Yeah, a low 11sec car in Aus is ~400whp.
Also apologies for turning your thread into a pissing contest. Although it is quite funny.
Most what you have been stating is simply opinion and has no backed facts both about dynojets and walbro fuel capacity.
OP:
Regardless of the numbers, 430-440whp isn't bad for DD. Should be good for 11's at least from what I have seen out of our local DD's.
let me know how the *** end of my car looks.
