Scott Bush & Relentless Autosports: Exposing the Hype, Lies, and Failure
Registered User
Joined: May 2008
Posts: 377
Likes: 1
From: St. Louis
Hi,
I must say that I am impressed with your dyno results
I am from Singapore and I guess that we are a bit behind the times when it comes to technology. My engine builder has always got me to buy parts that I suspect are more than what I need for my requirements. And after seeing your dyno results, it just confirms that I don't need the 1000cc/min injectors that he got me to buy.
But before I go confront him, can you please let me know what fuel pressure you are running your system at? And what duty cycle are you running the injectors at?
Without taking fuel pressure into consideration, going by the calculations at this website, http://www.witchhunter.com/injectorcalc1.php4,
using crank HP of 585HP (509rwhp x 1.15, think 15% transmission loss is fair),
and BSFC of 0.6, I calculate that you need a fuel injector duty cycle of 123% if you are using 500cc/min injectors.
Is it safe to run injectors at 123% on a constant basis? My engine builder told me that a reasonable number is 85% at WOT or else I will blow my engine. Can you show me some literature so that I can call BS on him!
Or maybe you are running at 85% duty cycle and just increased the fuel pressure. But going by this calculations, http://www.rceng.com/technical.aspx, you need a fuel pressure of 130PSIG!! How did you manage to achieve such a high pressure? I don't think even my dual Sard 280L/min can do that? What fuel pumps are you using? Please don't say that you are using the stock fuel pump because I don't see a fuel pump upgrade on your build sheet. I am going to sue my builder if you are using the stock fuel pump and can get such high pressure
And you stated that you are not running a fuel return system? Again...I am mad. How did your engine builder manage to run such a high pressure fuel system without a fuel return system?
I hope that you will share the knowledge so that I can go confront my engine builder.
I must say that I am impressed with your dyno results
I am from Singapore and I guess that we are a bit behind the times when it comes to technology. My engine builder has always got me to buy parts that I suspect are more than what I need for my requirements. And after seeing your dyno results, it just confirms that I don't need the 1000cc/min injectors that he got me to buy.
But before I go confront him, can you please let me know what fuel pressure you are running your system at? And what duty cycle are you running the injectors at?
Without taking fuel pressure into consideration, going by the calculations at this website, http://www.witchhunter.com/injectorcalc1.php4,
using crank HP of 585HP (509rwhp x 1.15, think 15% transmission loss is fair),
and BSFC of 0.6, I calculate that you need a fuel injector duty cycle of 123% if you are using 500cc/min injectors.
Is it safe to run injectors at 123% on a constant basis? My engine builder told me that a reasonable number is 85% at WOT or else I will blow my engine. Can you show me some literature so that I can call BS on him!
Or maybe you are running at 85% duty cycle and just increased the fuel pressure. But going by this calculations, http://www.rceng.com/technical.aspx, you need a fuel pressure of 130PSIG!! How did you manage to achieve such a high pressure? I don't think even my dual Sard 280L/min can do that? What fuel pumps are you using? Please don't say that you are using the stock fuel pump because I don't see a fuel pump upgrade on your build sheet. I am going to sue my builder if you are using the stock fuel pump and can get such high pressure
And you stated that you are not running a fuel return system? Again...I am mad. How did your engine builder manage to run such a high pressure fuel system without a fuel return system?
I hope that you will share the knowledge so that I can go confront my engine builder.
Registered User
iTrader: (1)
Joined: Sep 2007
Posts: 5,256
Likes: 0
From: Texas, Arizona,Cayman Island
Registered User
iTrader: (1)
Joined: Sep 2007
Posts: 5,256
Likes: 0
From: Texas, Arizona,Cayman Island
Here is MY dyno run where I made 1150 using 850bb turbo and C36 race fuel.
Yes I had it done at SP....Dont ask me any question...I will not respond...THX..
Yes I had it done at SP....Dont ask me any question...I will not respond...THX..
Originally Posted by XKR
I got em you should too
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Registered User
Joined: Jun 2006
Posts: 82
Likes: 0
From: Singapore
Hi,
I must say that I am impressed with your dyno results
I am from Singapore and I guess that we are a bit behind the times when it comes to technology. My engine builder has always got me to buy parts that I suspect are more than what I need for my requirements. And after seeing your dyno results, it just confirms that I don't need the 1000cc/min injectors that he got me to buy.
But before I go confront him, can you please let me know what fuel pressure you are running your system at? And what duty cycle are you running the injectors at?
Without taking fuel pressure into consideration, going by the calculations at this website, http://www.witchhunter.com/injectorcalc1.php4,
using crank HP of 585HP (509rwhp x 1.15, think 15% transmission loss is fair),
and BSFC of 0.6, I calculate that you need a fuel injector duty cycle of 123% if you are using 500cc/min injectors.
Is it safe to run injectors at 123% on a constant basis? My engine builder told me that a reasonable number is 85% at WOT or else I will blow my engine. Can you show me some literature so that I can call BS on him!
Or maybe you are running at 85% duty cycle and just increased the fuel pressure. But going by this calculations, http://www.rceng.com/technical.aspx, you need a fuel pressure of 130PSIG!! How did you manage to achieve such a high pressure? I don't think even my dual Sard 280L/min can do that? What fuel pumps are you using? Please don't say that you are using the stock fuel pump because I don't see a fuel pump upgrade on your build sheet. I am going to sue my builder if you are using the stock fuel pump and can get such high pressure
And you stated that you are not running a fuel return system? Again...I am mad. How did your engine builder manage to run such a high pressure fuel system without a fuel return system?
I hope that you will share the knowledge so that I can go confront my engine builder.
I must say that I am impressed with your dyno results
I am from Singapore and I guess that we are a bit behind the times when it comes to technology. My engine builder has always got me to buy parts that I suspect are more than what I need for my requirements. And after seeing your dyno results, it just confirms that I don't need the 1000cc/min injectors that he got me to buy.
But before I go confront him, can you please let me know what fuel pressure you are running your system at? And what duty cycle are you running the injectors at?
Without taking fuel pressure into consideration, going by the calculations at this website, http://www.witchhunter.com/injectorcalc1.php4,
using crank HP of 585HP (509rwhp x 1.15, think 15% transmission loss is fair),
and BSFC of 0.6, I calculate that you need a fuel injector duty cycle of 123% if you are using 500cc/min injectors.
Is it safe to run injectors at 123% on a constant basis? My engine builder told me that a reasonable number is 85% at WOT or else I will blow my engine. Can you show me some literature so that I can call BS on him!
Or maybe you are running at 85% duty cycle and just increased the fuel pressure. But going by this calculations, http://www.rceng.com/technical.aspx, you need a fuel pressure of 130PSIG!! How did you manage to achieve such a high pressure? I don't think even my dual Sard 280L/min can do that? What fuel pumps are you using? Please don't say that you are using the stock fuel pump because I don't see a fuel pump upgrade on your build sheet. I am going to sue my builder if you are using the stock fuel pump and can get such high pressure
And you stated that you are not running a fuel return system? Again...I am mad. How did your engine builder manage to run such a high pressure fuel system without a fuel return system?
I hope that you will share the knowledge so that I can go confront my engine builder.
My dual Sards may just reach this high of a pressure. But how did you manage to achieve this pressure without a fuel pump upgrade? Is it true that a thicker wire will do the trick?
Registered User
Joined: May 2008
Posts: 377
Likes: 1
From: St. Louis
I made a mistake when calculating the fuel pressure needed, it should be 90 PSIG and not 130 PSIG. MY bad.
My dual Sards may just reach this high of a pressure. But how did you manage to achieve this pressure without a fuel pump upgrade? Is it true that a thicker wire will do the trick?
My dual Sards may just reach this high of a pressure. But how did you manage to achieve this pressure without a fuel pump upgrade? Is it true that a thicker wire will do the trick?
Thread Starter
Joined: Nov 2004
Posts: 22,096
Likes: 1
From: San Diego 92111
Has anyone called JWT and asked about Scott? RA? VRT? I wonder if they refer to them? Scott seems to push the JWT hard (as seen at g 350 z driver yesterday). Just curious.
Last edited by myG35zx; Apr 6, 2009 at 09:15 AM.
I already said this.This is how we get to Scott by going through JWT and complaining about him letting guys without shops install their turbo kits. Although we are an authorized JWT dealer,we have not installed one kit, only fixed other shops fuc* ups.
Last edited by TurboTim; Apr 6, 2009 at 01:19 PM.
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Joined: Sep 2007
Posts: 5,256
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From: Texas, Arizona,Cayman Island
Yup...here is the dyno where I made 1150whp using 850bb turbo's.
<embed src="http://video.cardomain.com/mediaplayer.swf?file=http%3a%2f%2fvideo.cardomain.com%2fadpl aylist.aspx%3fembeded%3dtrue%26key%3d38871A4283F8F257&callba ck=http://video.cardomain.com/adplaylistcallback.aspx&backcolor=0xffffff&frontcolor=0x1c54 9d&lightcolor=0x1c549d&screencolor=0x000000&logolink=http://video.cardomain.com/" width="430" height="354"></embed>
PA-LESELast edited by XKR; Apr 6, 2009 at 01:35 PM.
XKR, It's not 100% VooDoo (TM)
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
Registered User
iTrader: (1)
Joined: Sep 2007
Posts: 5,256
Likes: 0
From: Texas, Arizona,Cayman Island
XKR, It's not 100% VooDoo (TM)
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
Registered User
Joined: May 2008
Posts: 377
Likes: 1
From: St. Louis
XKR, It's not 100% VooDoo (TM)
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
The equation may be more complicated, as-in:
10% - Complete BS
30% - Lucky to find naive customers
30% - Luckier that they have money to spend
10% - VooDoo Parts (i.e. high voltage/current wired to walbro)
10% - VooDoo Marketing (website with no address, no business license)
10% - VooDoo Dyno Sheets (HP & TQ too high for a single wire to produce)
100% - Fail
Sorry for going OT but For sure my last set up was only 415whp and I had a dyno vid. Most guys that go from 250whp to 500+whp get that **** on video.
Last edited by Sylvan Lake V35; Apr 7, 2009 at 09:09 AM.
It's like walking into a secure facility... No pictures or recording equipment allowed. The man has to safeguard his methods or EVERYONE will be pushing his numbers!