Mythbusters.

User avatar
Wit Ark
Lieutenant
Posts: 1440
Joined: Sun Mar 29, 2009 8:46 pm
Car Make: VW
Car Model: Citi Chico baby dragster
Membership No: missing
Location: Namibia
Contact:

A higher octane fuel is less flamable

Post by Wit Ark » Mon Mar 25, 2013 12:48 am

Apparently a higher octane fuel is less flammable than lets say normal pump gas, I think this is true to a certain extend given the higher octane fuel usually has a higher vaporising point(hence its better anti-knock properties), but then when compared to oxygen enriched fuels like ethanol or methanol wouldn't that be more flammable than say standard pump fuel?
2.0i ADY. 90.2kW & 198.1Nm atw excl. 40Horses VAT 13.9980sec @ OKH nationals 7/4/2012
User avatar
Scatman
General
Posts: 9439
Joined: Wed Aug 06, 2008 1:37 pm
Car Make: BMW
Car Model: 320d Msport
Membership No: 1773
Location: Magalieskruin, Pretoria

Re: Mythbusters.

Post by Scatman » Mon Mar 25, 2013 9:03 am

Basically the higher the octane, the less likely the fuel is to combust. So with a higher octane fuel, you can run higher compression and more advanced timing without inducing pre-ignition (pinging).

On the more flammable/less flammable issue, I think that regular petrol is likely to catch alight more readily than methanol, I think normal petrol has a BTU (British Thermal Units) rating which is twice as high as methanol. To my knowledge the BTU rating is an excellent indicator of how volatile a fuel is.
Current:
2008 BMW 320d Msport Auto
Ex:
2006 Audi A3 2.0T
2006 BMW E90 330d Manual
*Click here*
2006 Sportline
*Click here*
Mk4 Jetta TDI - 79wKw, 256Nm atw @KAR
*Click here*
Margaret - '75 Audi 80 Restoration Project
*Click here*
2005 1.4i Citi Golf
*Click here*
User avatar
SemiColon
I sparkle in the sunlight
Posts: 10457
Joined: Wed Feb 24, 2010 1:23 pm
Car Make: Renault
Car Model: Kadjar 1.5
Membership No: 1641
Location: Pretoria

Re: Mythbusters.

Post by SemiColon » Mon Mar 25, 2013 9:23 am

http://www.themotorreport.com.au/6915/t ... ane-number
Unleaded fuels carry a RON (Research Octane Number) rating. Put simply, RON determines petrol's 'anti-knock' quality or resistance to pre-ignition; or if you want to put in another way, the Octane Number denotes its resistance to detonation.

If you run your vehicle on low octane petrol you might notice a 'knocking', 'rattling', or 'pinging' sound (as it’s often called), which means the fuel is detonating instead of burning smoothly. This is not only a waste of energy, but it can also damage your engine in the long run. Burning is the desired effect of any internal combustion engine (not an explosion per se).

Fuel with a higher octane number suitable for your vehicle's engine will eliminate knocking. Older cars that were designed to run on a lower RON fuel can also benefit from a higher RON, because the older the car and the higher the kilometres, means the engine will have a greater propensity to knock. This is mainly caused by a build-up of contaminants and carbon deposits which, when hot, can cause pre-ignition
八拾六
User avatar
cpichiptuning
WRD Service Centre - CPi Chiptuning
Posts: 218
Joined: Sun Feb 03, 2013 10:26 am
Car Make: Chev
Car Model: Lumina UTE SS 6.0L, + audi S3
Location: Klerksdorp
Contact:

what perform the best? uflow or x-flow

Post by cpichiptuning » Sat May 25, 2013 1:18 pm

2L 8valve
Mods:
OEM intake,MP9 TB & Air box
4 bar feul regulator
Bosch injectors 180cc
Piston size 82mm
OEM 2L Stroke
298 Estas Cam
Stage 2+ Flywheel
Viper 4into1 branch & 63mm full system
60-2 XMS4b Perfect Power Management with blue fire
LIQUI MOLY 4T Oil
NO ADITIVES!!! CLEAN 95oct Pump Feul


Image

Image



see below setup with throttles and compare to above,


throttles with xflow head or single throttle with u-flow head?

I don`t know specs on the x-flow motor below, rumor, maybe a 2.1L, will try to find out what mods are done on this below motor, this one makes

136hp and 165nm,

the setup above figures are
135.96whp and 188nm,

though not on the same Dyno,

Image
Image
Last edited by cpichiptuning on Sat May 25, 2013 5:01 pm, edited 1 time in total.
User avatar
Abnormal
Lieutenant-Colonel
Posts: 4341
Joined: Thu Apr 08, 2004 4:03 pm
Membership No: 848
Location: JHB

Re: Mythbusters.

Post by Abnormal » Sat May 25, 2013 4:11 pm

:???:
\Oo) \ _w_ / (oO/
User avatar
cpichiptuning
WRD Service Centre - CPi Chiptuning
Posts: 218
Joined: Sun Feb 03, 2013 10:26 am
Car Make: Chev
Car Model: Lumina UTE SS 6.0L, + audi S3
Location: Klerksdorp
Contact:

Re: what perform the best? uflow or x-flow

Post by cpichiptuning » Sat May 25, 2013 5:07 pm

throttles with xflow head or single throttle with u-flow head?

I don`t know specs on the x-flow motor below, rumor, maybe a 2.1L, will try to find out what mods are done on this below motor, this one makes

136hp and 165nm,

the setup above figures are
135.96whp and 188nm,

though not on the same Dyno,
I think for throttles its only the sound of it, very close performance wise, but for me its the x-flo with throttles :drool:
User avatar
Neuk
Treasurer
Treasurer
Posts: 48438
Joined: Mon Nov 28, 2005 2:58 pm
Car Make: VW
Car Model: '15 Golf R
Membership No: 806
Location: Johannesburg

Re: Mythbusters.

Post by Neuk » Sat May 25, 2013 5:26 pm

Not sure if that is at altitude or not but take the engine to 10000rpm with a 300+ degree camshaft and I think you will see why ITB's make sense...



Sent from my iPhone 4 using Tapatalk
Nic

Current Garage:
Daily Drive: 2015 VW Golf R
Project Fes: 1982 VW Golf GLS 1.5
Project FeO: 1966 VW Type 2 Transporter Kombi Split Window

Previous Garage:
Vagon: 2005 Audi B6 A4 1.8T (140kw) Avant
Project XXXX: 1967 VW Type 3 Variant (Squareback)
Project Betty: 2005 Polo 1.9 TDI (PD130) Sportline
Weekend Warrior: 1993 Volkswagen Caddy 2.0 16v ABF on ITB's
User avatar
cpichiptuning
WRD Service Centre - CPi Chiptuning
Posts: 218
Joined: Sun Feb 03, 2013 10:26 am
Car Make: Chev
Car Model: Lumina UTE SS 6.0L, + audi S3
Location: Klerksdorp
Contact:

Re: Mythbusters.

Post by cpichiptuning » Sun May 26, 2013 7:41 am

Neuk wrote:Not sure if that is at altitude or not but take the engine to 10000rpm with a 300+ degree camshaft and I think you will see why ITB's make sense...
Sent from my iPhone 4 using Tapatalk


not many vw motor rev 10000rpm, to get to that cost big bucks and precision engineering, don’t know if there’s any in SA

135.96whp and 188nm at 1333m (4376 ft) altitude u-flo single throttle
and 136hp and 165nm at 1,645 m (5,397 ft) altitude x-flow throttles
User avatar
Neuk
Treasurer
Treasurer
Posts: 48438
Joined: Mon Nov 28, 2005 2:58 pm
Car Make: VW
Car Model: '15 Golf R
Membership No: 806
Location: Johannesburg

Re: Mythbusters.

Post by Neuk » Sun May 26, 2013 12:29 pm

cpichiptuning wrote:
Neuk wrote:Not sure if that is at altitude or not but take the engine to 10000rpm with a 300+ degree camshaft and I think you will see why ITB's make sense...
Sent from my iPhone 4 using Tapatalk


not many vw motor rev 10000rpm, to get to that cost big bucks and precision engineering, don’t know if there’s any in SA

135.96whp and 188nm at 1333m (4376 ft) altitude u-flo single throttle
and 136hp and 165nm at 1,645 m (5,397 ft) altitude x-flow throttles
None in SA that I know of, a few dabbled with 8000rpm and 9000rpm. Berg Cup is probably the best example of high rpm, ITB'd VW motors...



Sent from my iPhone 4 using Tapatalk
Nic

Current Garage:
Daily Drive: 2015 VW Golf R
Project Fes: 1982 VW Golf GLS 1.5
Project FeO: 1966 VW Type 2 Transporter Kombi Split Window

Previous Garage:
Vagon: 2005 Audi B6 A4 1.8T (140kw) Avant
Project XXXX: 1967 VW Type 3 Variant (Squareback)
Project Betty: 2005 Polo 1.9 TDI (PD130) Sportline
Weekend Warrior: 1993 Volkswagen Caddy 2.0 16v ABF on ITB's
User avatar
GTiDon
Brigadier
Posts: 6374
Joined: Mon Jul 29, 2002 9:05 am
Membership No: 1161

Re: Mythbusters.

Post by GTiDon » Mon Aug 19, 2013 8:56 am

Do these things work? There are performance versions and fuel saving versions.. Apparently just plugs in to your ODB port

Image
User avatar
Yakuza Racer
Voora Molester
Posts: 12260
Joined: Wed Jul 28, 2010 8:42 am
Car Make: VW
Membership No: missing
Location: Jou Ma Se...

Re: Mythbusters.

Post by Yakuza Racer » Mon Aug 19, 2013 3:34 pm

gtidon wrote:Do these things work? There are performance versions and fuel saving versions.. Apparently just plugs in to your ODB port

Image
lol
Mine: Jetta 6 TDi
zaheer786
Enlisted
Posts: 39
Joined: Thu Jul 11, 2013 7:05 pm
Car Make: vw
Car Model: MK2 GTi 16V
Location: Durban

Re: Mythbusters.

Post by zaheer786 » Thu Nov 07, 2013 5:57 pm

does having a aircon and power steering reduce the power of the car??? if so by how much???
User avatar
Sinbad
Post Whore
Posts: 20516
Joined: Fri Oct 26, 2007 1:13 pm
Car Make: Mercedes
Car Model: R170 AMG Hairdryer
Membership No: 1152

Re: Mythbusters.

Post by Sinbad » Thu Nov 07, 2013 6:15 pm

zaheer786 wrote:does having a aircon and power steering reduce the power of the car??? if so by how much???
Power steering uses power while you are turning the wheels so it's not something you'd ever really notice.
Air con does pull a fair amount of power, but modern cars do kick the compressor out when you go full throttle.
Image

Image
katotter wrote:Geezus, I wanna be his girfriend.
zaheer786
Enlisted
Posts: 39
Joined: Thu Jul 11, 2013 7:05 pm
Car Make: vw
Car Model: MK2 GTi 16V
Location: Durban

Re: Mythbusters.

Post by zaheer786 » Thu Nov 07, 2013 7:30 pm

always thought it was a major issue. thanx bud!
MickeyEngles
Cadet
Posts: 211
Joined: Fri Feb 07, 2014 12:32 pm
Car Make: Ford
Car Model: Fiesta ST
Location: Krugersdorp, South Africa

Re: Mythbusters.

Post by MickeyEngles » Wed Feb 19, 2014 12:02 pm

does a proper cone filter noticeably improve performance?
some people say its instantly noticeably.
others say its like 3-4kw gain max.
Current : 2013 Ford Fiesta ST
Previous :
2004 Mitsubishi Lancer
2002 Audi A3 1.8T (136wkw 342nm)
2007 Citi golf 1.4 chico
ambroseg1
Ray of Sunshine
Posts: 859
Joined: Fri Apr 11, 2008 9:15 am

Re: Mythbusters.

Post by ambroseg1 » Wed Feb 19, 2014 12:04 pm

MickeyEngles wrote:does a proper cone filter noticeably improve performance?
some people say its instantly noticeably.
others say its like 3-4kw gain max.
definition of proper?
MickeyEngles
Cadet
Posts: 211
Joined: Fri Feb 07, 2014 12:32 pm
Car Make: Ford
Car Model: Fiesta ST
Location: Krugersdorp, South Africa

Re: Mythbusters.

Post by MickeyEngles » Wed Feb 19, 2014 12:08 pm

definitely not from autostyle firstly :puke:
but I know of many people fitting the honda s2000 filter?
Current : 2013 Ford Fiesta ST
Previous :
2004 Mitsubishi Lancer
2002 Audi A3 1.8T (136wkw 342nm)
2007 Citi golf 1.4 chico
User avatar
Abnormal
Lieutenant-Colonel
Posts: 4341
Joined: Thu Apr 08, 2004 4:03 pm
Membership No: 848
Location: JHB

Re: Mythbusters.

Post by Abnormal » Wed Feb 19, 2014 12:11 pm

MickeyEngles wrote:does a proper cone filter noticeably improve performance?
some people say its instantly noticeably.
others say its like 3-4kw gain max.

some pages before I asked a similar question. The answer is it depends.
To test for yourself do before and after dyno runs and decide.


*edit The only time you will see a benefit is if the standard (assuming a brand new standard filter) is causing a restriction.
\Oo) \ _w_ / (oO/
Gvelo
Cadet
Posts: 126
Joined: Tue Jul 23, 2013 12:10 pm
Location: east london

Re: what perform the best? uflow or x-flow

Post by Gvelo » Thu Feb 27, 2014 9:25 am

cpichiptuning wrote:2L 8valve
Mods:
OEM intake,MP9 TB & Air box
4 bar feul regulator
Bosch injectors 180cc
Piston size 82mm
OEM 2L Stroke
298 Estas Cam
Stage 2+ Flywheel
Viper 4into1 branch & 63mm full system
60-2 XMS4b Perfect Power Management with blue fire
LIQUI MOLY 4T Oil
NO ADITIVES!!! CLEAN 95oct Pump Feul



Image

Image



see below setup with throttles and compare to above,


throttles with xflow head or single throttle with u-flow head?

I don`t know specs on the x-flow motor below, rumor, maybe a 2.1L, will try to find out what mods are done on this below motor, this one makes

136hp and 165nm,

the setup above figures are
135.96whp and 188nm,

though not on the same Dyno,

Image
Image


DO You see the graph with the throttles look at it right at the end... see the way that it levels out right at the end. MY tuner told me in his experience if the graph levels out in the end , there is more ponies to be squeezed out of that setup
Gvelo
Cadet
Posts: 126
Joined: Tue Jul 23, 2013 12:10 pm
Location: east london

Re: Mythbusters.

Post by Gvelo » Tue Mar 11, 2014 12:16 pm

I heard this one alot recently around the track paint your exhaust run it hot their were the paint stops peeling off you can cut it their....
First of all what paint I work with paint every single day I could tell you types of paint quality make of paint all have a huge effect on how paint sticks i yjink that one is hugwash
User avatar
Scatman
General
Posts: 9439
Joined: Wed Aug 06, 2008 1:37 pm
Car Make: BMW
Car Model: 320d Msport
Membership No: 1773
Location: Magalieskruin, Pretoria

Re: Mythbusters.

Post by Scatman » Tue Mar 11, 2014 12:38 pm

Gvelo wrote:I heard this one alot recently around the track paint your exhaust run it hot their were the paint stops peeling off you can cut it their....
First of all what paint I work with paint every single day I could tell you types of paint quality make of paint all have a huge effect on how paint sticks i yjink that one is hugwash
Image
Current:
2008 BMW 320d Msport Auto
Ex:
2006 Audi A3 2.0T
2006 BMW E90 330d Manual
*Click here*
2006 Sportline
*Click here*
Mk4 Jetta TDI - 79wKw, 256Nm atw @KAR
*Click here*
Margaret - '75 Audi 80 Restoration Project
*Click here*
2005 1.4i Citi Golf
*Click here*
User avatar
King8v
Lieutenant-Colonel
Posts: 4798
Joined: Sat Mar 23, 2013 9:18 pm
Car Make: VW
Car Model: Citi 1.8 Sport
Location: Cape Town

Re: Mythbusters.

Post by King8v » Tue Mar 11, 2014 1:20 pm

scatman wrote:
Gvelo wrote:I heard this one alot recently around the track paint your exhaust run it hot their were the paint stops peeling off you can cut it their....
First of all what paint I work with paint every single day I could tell you types of paint quality make of paint all have a huge effect on how paint sticks i yjink that one is hugwash
Image

Xoveracountable!! :twisted:
****My VW goes BWaaaaaaaH Ppsshh****

My ride: http://vwclub.co.za/forum/viewtopic.php ... i&start=25
User avatar
Stompie
Boostleak Guru
Posts: 20198
Joined: Thu Jun 23, 2011 8:53 am
Car Make: VW POLO
Car Model: 07' GTI 9n3
Membership No: 1843
Location: East Rand

Re: Mythbusters.

Post by Stompie » Tue Sep 02, 2014 10:25 am

Gvelo wrote:I heard this one alot recently around the track paint your exhaust run it hot their were the paint stops peeling off you can cut it their....
First of all what paint I work with paint every single day I could tell you types of paint quality make of paint all have a huge effect on how paint sticks i yjink that one is hugwash
yeah no definitely, i agree fully you with! :thumbup:
Image
BMW 120D E87
Ex: 07' Polo GTI 1.8T Rides Thread Here
User avatar
1.8iblackie
Lieutenant
Posts: 1325
Joined: Wed Dec 03, 2008 12:31 pm
Car Make: VW
Car Model: vw polo classic. NO ENGINE
Membership No: missing
Location: Cape Town

Re: what perform the best? uflow or x-flow

Post by 1.8iblackie » Sun Nov 09, 2014 11:25 am

cpichiptuning wrote:
throttles with xflow head or single throttle with u-flow head?

I don`t know specs on the x-flow motor below, rumor, maybe a 2.1L, will try to find out what mods are done on this below motor, this one makes

136hp and 165nm,

the setup above figures are
135.96whp and 188nm,

though not on the same Dyno,
I think for throttles its only the sound of it, very close performance wise, but for me its the x-flo with throttles :drool:
i went from 106kw to 127kw by changing cam from 276 to 298 and adding throttles. same dyno.
8vT 187.2kW and 361Nm
User avatar
Psycho8v
Lieutenant-General
Posts: 8527
Joined: Mon Jul 26, 2010 12:37 pm
Car Make: Vw
Car Model: Citi Golf
Membership No: 1881
Location: Fochville

Re: what perform the best? uflow or x-flow

Post by Psycho8v » Mon Nov 10, 2014 11:27 am

1.8iblackie wrote:i went from 106kw to 127kw by changing cam from 276 to 298 and adding throttles. same dyno.
Bud, just remember that you guys down at the coast have all the good air. Us okes up on the highveld battle to get the air flowing on N/A applications :hug:
Post Reply