The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

how much boost should I run????

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

AWD Eagle

15+ Year Contributor
273
0
Nov 11, 2003
Wichita, Kansas
My mods are as follows:

Walbro 190lph pump
MBC
Boost guage
clutch
K&N, free mods

Stock exhaust, etc.

I'm racing at the track saturday and I'll be running 93 octane with some good octane booster, so rougly 97-98octane. Do you guys think I can run around 17psi safely?

Thanks
Dan
 
Octane booster? Are you talking about that crap from Autozone? Your gonna have to put a TON in to gain 4-5 octane. Just mix your own race gas.
 
IHeartTurbo said:
Octane booster? Are you talking about that crap from Autozone? Your gonna have to put a TON in to gain 4-5 octane. Just mix your own race gas.

I work for an auto supply store and my buddy special ordered this stuff from CRC that makes 7.2 point gains, and it's proven stuff. Smell just like really strong paint thinner.

By the way, is it safe to run the "home-made race gas" on a motor with 02 sensor and fuel injection?
 
do you have access to a logger? if i were you, i'd go put in whatever gas you're going to run and boost until you get too much knock.

i presume 17 psi will be fine.. but every car is different. be careful.
 
AWD Eagle said:
I work for an auto supply store and my buddy special ordered this stuff from CRC that makes 7.2 point gains, and it's proven stuff. Smell just like really strong paint thinner.

By the way, is it safe to run the "home-made race gas" on a motor with 02 sensor and fuel injection?


I believe there are 10 points per octane point. IIRC, that means you will be running roughly 93.7 octane with the bottle of booster.

Start at 15/16 psi and turn it up at the track while you are logging. It is the only way to know for sure what you can get away with.
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Latest posts

Build Thread Updates

Latest Classifieds

  • For sale 4G63 3 inch Magnaflow SS high flow cat
    3 inch Magnaflow stainless cat. High flow. 18.25 inches. Flange holes are 4 1/8 center. Has...
    • Galant665
    • Updated:
  • For sale 4G63 Forge Motorsports BOV
    Original Forge Motorsports bov. Adjustable with over 80 clicks on the dial. Nice to use for...
    • Galant665
    • Updated:
  • Wanted 1g 1991 Black Cherry Eagle Talon
    5-speed
    • bamatalon
    • Updated:
    • Expires
  • For sale Misc Left Over Parts
    Hello, I have a few left over parts for sale, these do not include shipping, please pm me for a...
    • r3dmak
    • Updated:
    • Expires
  • For sale Alpha Injection Clinic 2200cc for 4G63 DSM/EVO
    I have a set of Alpha Injection Clinic 2200cc high z injectors for DSM/EVO. I am stepping up to...
    • spoolinpos
    • Updated:
    • Expires
Back
Top