Page 1 of 4 123 ... LastLast
Results 1 to 10 of 34
  1. #1
    DaveC's Avatar
    Join Date
    Jun 2007
    Location
    Central Oklahoma
    Posts
    2,372
    +1
    41

    Current fuel used with performance mods ?

    Looking for info from those with performance mods on Sea Doo 4tecs. Interested in what is available in your area and what works for your current mods. The E85 does not apply in this case.

    Is ethanol free fuel available in your area ?

    What octane level 91, 93 etc ?

    Is it a branded fuel (Shell, Sunoco, Conoco, VP) ?

    Do you mix pump gas with race gas ?

    Use octane booster ?

    Your current boost and timing ?

    93 octane is almost impossible to find here. Two locations in Oklahoma City carry it. Location #1 is $4.59 a gallon, location #2 is $5.00 a gallon. The standard non ethanol premium is 91 octane that is available most everywhere for $2.79 per gallon.


  2. #2
    All stock except a CAI and a Motec with level 2 logging. 93 only.

    34 degrees at WOT up top.

  3. #3
    Guidoo's Avatar
    Join Date
    Jul 2011
    Location
    Living outside of Charleston SC.
    Posts
    2,350
    +1
    538
    I was told by a suicide jocky years ago. "They're only two gasoline producers,Exxon and everyone else as in it's all the same. Only difference between all others is the additives.". Now that was a few years ago. I run E free 93.

  4. #4
    boost junkie skidoochris's Avatar
    Join Date
    Mar 2012
    Location
    Davison, Mi
    Posts
    4,653
    +1
    508
    andy how close is the motec timing to what vtech says
    has any one ever put a degree wheel on to verify numbers

  5. #5
    boost junkie skidoochris's Avatar
    Join Date
    Mar 2012
    Location
    Davison, Mi
    Posts
    4,653
    +1
    508
    davec, its all about timing
    one fuel may be fine with one tune
    but will knock on another tune
    or end up like Gus's motor

    Ethanol in fuel is not the end of the world
    the trick is to use the same fuel every time
    even if the fuel has 15% E your tuned for it
    and it is not uncommon to see high E %
    its a cheap high octane additive that most new vehicles can deal with
    don't get me wrong E has its bad points too

  6. #6

    Join Date
    Mar 2013
    Location
    Appleton, WI
    Posts
    590
    +1
    93
    I'd only be tuning to what you have available in your area. For many that is 91 or 93 octane. I won't be concerned about 10% ethanol in it or not, it isn't going to make difference worth noting in your logs. If it did every tuning company would be pointing you to the exact fuel to use.

  7. #7
    Bob 1tommygunner1927's Avatar
    Join Date
    Apr 2007
    Location
    Houston, Texas
    Posts
    7,568
    +1
    1,498
    Quote Originally Posted by DaveC View Post
    Looking for info from those with performance mods on Sea Doo 4tecs. Interested in what is available in your area and what works for your current mods. The E85 does not apply in this case.

    Is ethanol free fuel available in your area ?

    Haven't found ethanol free gas in my area.

    What octane level 91, 93 etc ?

    93 octane (E10) Stoichiometric ratio 14.2

    Is it a branded fuel (Shell, Sunoco, Conoco, VP) ?

    Shell

    Do you mix pump gas with race gas ?

    No

    Use octane booster ?

    No

    Your current boost and timing ?

    17 psi, 35*......reduced to 29* based on intake manifold pressure in various increments/pressure level. If knock is present and surpasses 55% threshold, timing is reduced up to an additional 15*.

    93 octane is almost impossible to find here. Two locations in Oklahoma City carry it. Location #1 is $4.59 a gallon, location #2 is $5.00 a gallon. The standard non ethanol premium is 91 octane that is available most everywhere for $2.79 per gallon.
    Price for 93 octane fuel varies....depends on location.






  8. #8
    Branden's Avatar
    Join Date
    Aug 2014
    Location
    Cape Coral, Fl
    Posts
    1,600
    +1
    321
    i run 20 lbs of boost and 93 pump gas, i have timing set at 31 degrees up top.

  9. #9
    boost junkie skidoochris's Avatar
    Join Date
    Mar 2012
    Location
    Davison, Mi
    Posts
    4,653
    +1
    508
    Brandon is on the edge
    but he is counting on the ecu to adjust if necessary
    I am not a gambling guy so you wont see me that close to the edge
    a safety zone is always good, to loose it for a mph or two is crazy

  10. #10
    Branden's Avatar
    Join Date
    Aug 2014
    Location
    Cape Coral, Fl
    Posts
    1,600
    +1
    321
    Lol now why do you think I'm on the edge?

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replies: 4
    Last Post: 06-29-2015, 05:53 PM
  2. Fuel Saving with mods or performance parts.
    By rayz25 in forum 4-Tec Performance
    Replies: 17
    Last Post: 06-13-2012, 09:17 AM
  3. noob with a 1997 GS 1200 with a few performance mods
    By fr1day in forum Yamaha Old School Skis
    Replies: 20
    Last Post: 08-13-2010, 03:20 PM
  4. can u use a inline fuel filter with fich machine
    By pwint80 in forum Polaris Open Discussion
    Replies: 3
    Last Post: 07-21-2010, 11:19 PM
  5. fuel question.. rxp 2004 with some mods
    By rxp_kimmo in forum 4-Tec Performance
    Replies: 1
    Last Post: 06-13-2010, 03:05 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •