Notices
EvoM New Member / FAQs / EvoM Rules New member? Come on in, introduce yourself, and get acquainted with the evolutionm.net posse :) FAQs will also be answered in here.

Race Gas ?

Thread Tools
 
Search this Thread
 
Old Mar 23, 2008 | 12:02 PM
  #1  
beemerfreak's Avatar
Thread Starter
Evolved Member
iTrader: (6)
 
Joined: May 2006
Posts: 526
Likes: 1
From: Chicago
Race Gas ?

I was wondering how race gas works. I was planning on throwing some in my car for the summer could some one explain how much do i full up like for an example how many gallons do i need to put in?

I was planning to put 104 octane and raising my boost to 28psi is that to high for 104?

My car is already tuned for 23 psi and I was not planning to get tunned for the race gas.

My car is a evo ix with bolt-ons at 23psi.

Also is it dangerous if i dont get a tune for the race gas?
Reply
Old Mar 23, 2008 | 12:15 PM
  #2  
FlLancer's Avatar
EvoM Staff Alumni
20 Year Member
iTrader: (2)
 
Joined: Jun 2004
Posts: 634
Likes: 0
From: MindYaBusiness
Your best bet would be to consult with a tuner.
Reply
Old Mar 23, 2008 | 01:07 PM
  #3  
otter's Avatar
EvoM Administrator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (14)
 
Joined: Jun 2004
Posts: 8,624
Likes: 14
From: Seat 8A
Moved to the proper section.
Reply
Old Mar 23, 2008 | 01:26 PM
  #4  
Jdav79's Avatar
Evolving Member
iTrader: (7)
 
Joined: Jan 2007
Posts: 147
Likes: 0
From: Jacksonville, FL
***Disclaimer - I am not a tuner*** Take this advice however you would like, but don't blame me for anything.

You can put 100 or 104 octane in your car and it will run fine without turning up the boost. You just will not see a whole lot of benefit from the race gas.

You will want to be tuned for the race gas in order to safely turn up your boost. Do not, I repeat do not turn your boost up to 28psi, even with race gas if you have not been tuned for it.

In fact, before you touch your EBC/MBC, do some more research, otherwise one of your next posts will be "I blew my motor, how much to get a new one?"
Reply
Old Mar 23, 2008 | 01:28 PM
  #5  
inco9nito99's Avatar
Evolved Member
iTrader: (90)
 
Joined: Jul 2005
Posts: 1,917
Likes: 0
From: Roselle, IL
Fridoon..here's a few scenarios:

Scenario 1:
1.) You're tuned at say, 25psi on 93octane.
2.) For EXAMPLE, say your car detonates (knocks) and timing is being pulled on that map.
3.) You dump in some higher octane fuel..
4.) Knock goes away and your car runs how it's supposed to run if you were tuned properly and the car likes it, (ie no detonation).

...that is one scenario how race gas works. Another scenario:

1.) You want to run 28-30psi of boost.
2.) You put in ~5gal of 110octane in a dry tank of 93octane.
3.) Assuming there is very little to no 93octane and the 110octane is actually 110octane, we're safe to say your mix in the tank will be 108-110octane.
4.) Unless you actually tune the timing/fuel tables to take advantage of the anti-knock properties of the race gas, simply turning up the boost isn't going to give you the performance advantages race gas allows you to have. 110octane can be tuned to ~12.2afrs and much higher peak tq timing and timing at the high end of the RPM map than 93octane fuel allows for and therefore you are allowed much more power potential. By not adjusting these tables for race gas, figure it a half-assed power adder by simply raising boost on a 93octane map.
Reply
Old Mar 23, 2008 | 01:46 PM
  #6  
beemerfreak's Avatar
Thread Starter
Evolved Member
iTrader: (6)
 
Joined: May 2006
Posts: 526
Likes: 1
From: Chicago
Originally Posted by inco9nito99
Fridoon..here's a few scenarios:

Scenario 1:
1.) You're tuned at say, 25psi on 93octane.
2.) For EXAMPLE, say your car detonates (knocks) and timing is being pulled on that map.
3.) You dump in some higher octane fuel..
4.) Knock goes away and your car runs how it's supposed to run if you were tuned properly and the car likes it, (ie no detonation).

...that is one scenario how race gas works. Another scenario:

1.) You want to run 28-30psi of boost.
2.) You put in ~5gal of 110octane in a dry tank of 93octane.
3.) Assuming there is very little to no 93octane and the 110octane is actually 110octane, we're safe to say your mix in the tank will be 108-110octane.
4.) Unless you actually tune the timing/fuel tables to take advantage of the anti-knock properties of the race gas, simply turning up the boost isn't going to give you the performance advantages race gas allows you to have. 110octane can be tuned to ~12.2afrs and much higher peak tq timing and timing at the high end of the RPM map than 93octane fuel allows for and therefore you are allowed much more power potential. By not adjusting these tables for race gas, figure it a half-assed power adder by simply raising boost on a 93octane map.
Thanks kunal my whole purpose of the race gas was going to the track and I wanted to see what my car could do with a little more power. I was not attending to do this on a daily basis.

So basically your saying there is no purpose of it unless getting a tune.
Reply
Old Mar 23, 2008 | 03:07 PM
  #7  
inco9nito99's Avatar
Evolved Member
iTrader: (90)
 
Joined: Jul 2005
Posts: 1,917
Likes: 0
From: Roselle, IL
Yes, to take advantage of the fuel properties of race gas, you should not only raise boost, but also alter the fuel/timing tables as well. If you want, you CAN dump in a little 100octane into your tank along with your 93octane when you go to the track to minimize the chances of any knock when hot lapping your car, but I wouldn't suggest turning up the boost on your current setup/tune.
Reply
Old Mar 23, 2008 | 03:27 PM
  #8  
max2evoix's Avatar
Evolved Member
iTrader: (8)
 
Joined: Aug 2007
Posts: 1,141
Likes: 0
From: ft.lauderdale fla
im tuned for c16 and then hang on
Reply
Old Mar 23, 2008 | 04:27 PM
  #9  
Sharkbite2000's Avatar
Evolved Member
iTrader: (21)
 
Joined: Dec 2005
Posts: 4,898
Likes: 14
From: Eugene, Oregon
I would get a tunner first to tune me for higher octane and boost just to safe.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
High_PSI
Evo Dyno Tuning / Results
14
May 20, 2015 09:45 AM
No.9
Evo Engine / Turbo / Drivetrain
38
Jul 10, 2008 03:27 PM
mcwop23
Evo Engine / Turbo / Drivetrain
14
Aug 26, 2007 10:50 PM
19psi
Evo General
6
Jun 13, 2006 11:44 AM
EVO8LTW
Evo Engine / Turbo / Drivetrain
16
Aug 27, 2005 03:37 AM




All times are GMT -7. The time now is 09:29 AM.