Pontiac Grand Prix Forums : Grandprix
 

Grand Prix Forums is the premier Pontiac Forum on the internet. Registered Users do not see the above ads. Please Register - It's Free!

Pontiac Grand Prix Forum - Welcome Register today! Contact us!

Page 6 of 6 FirstFirst ... 456
Results 101 to 107 of 107
  1. #101
    GXP Level Member GTPpower's Avatar
    Join Date
    May 2008
    Location
    Schuyler, NE
    Posts
    2,111
    Chats
    250

    Default Re: Tuning 60 pound injectors

    When is the last time you did plugs? And what are they gapped at?

    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
    2005 F350 6.0 - studded, deleted, bulletproofed, tuned
    1966 Olds Cutlass 442 Convertible
    2000 Chevy Silverado 2500 6.0l

  2. #102
    GT Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    318
    Chats
    60

    Default Re: Tuning 60 pound injectors

    Less than 6 months ago. I used autolite XP 104 iridium gapped at 55.

  3. #103
    GT Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    318
    Chats
    60

    Default Re: Tuning 60 pound injectors

    Thanks for the help everyone!!

    I have decided to switch back to my normal gas set up once this tank of E85 is empty. Less to worry about.

    There will be slightly used 60# injectors, a 3.0 and 3.2 pulley, an AEM ethanol fuel pump, and HP Tuners available in the next 2 weeks or so.
    2004 Comp G. E85, Pacesetter headers, 1.8 roller rockers, Wizair CAI, Overkill'd, 3.0 pulley, 60# injectors, ZZP transmission, fuel pump and alt rewire, poly mounts/performance suspension, Impala front brakes drilled and slotted rotors.

  4. #104
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
    Join Date
    Sep 2009
    Location
    Rogers, MN
    Posts
    20,175
    Chats
    80458

    Default Re: Tuning 60 pound injectors

    .055 is a pretty big gap for the mods in my eyes. A .045 would be better to prevent blow out.

    SMGPFC Member #1

  5. #105
    SE Level Member
    Join Date
    Jan 2017
    Location
    Pittsburgh, PA
    Posts
    57
    Chats
    0

    Default Re: Tuning 60 pound injectors

    If you do decide to go back to gas, I'd buy the 60s off you. I really do think you can make this work, though. Surging is what my car did when I had a microscopically cracked insulator on a spark plug.. I chased that problem down left right and sideways. Ended up being something stupid.

    .055 gap on a 3.0 pulley could very well be blowing the spark out.
    2001 Buick Regal GS Supercharged 3.8L 231ci Pushrod 90 V6 | 4T65E-HD
    Gen V M90, 3.6" MPS, F&R Powerlogs, 3" DP, 3" catback, Intake, 104s, 180 t-stat, Rendezvous HUD, Blacked-out headlights, Tint, F-body front brakes, Tuned.

  6. #106
    GrandPrix Junkie SgtMarshal's Avatar
    Join Date
    Feb 2012
    Location
    Kemmerer, Wyoming
    Posts
    3,635
    Chats
    21898

    Default Re: Tuning 60 pound injectors

    I had bad luck with iridium plugs. .055 is a big gap, you should try some copper tips gapped to .035 or even .040

  7. #107
    GXP Level Member GTPpower's Avatar
    Join Date
    May 2008
    Location
    Schuyler, NE
    Posts
    2,111
    Chats
    250

    Default Re: Tuning 60 pound injectors

    Yeah, I would try knocking the gap down to .035 and see if there is a difference.

    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
    2005 F350 6.0 - studded, deleted, bulletproofed, tuned
    1966 Olds Cutlass 442 Convertible
    2000 Chevy Silverado 2500 6.0l

Page 6 of 6 FirstFirst ... 456

Similar Threads

  1. Black Friday Deals on Tuning, Injectors and other parts
    By Overkill in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 2
    Last Post: 11-30-2015, 10:47 AM
  2. Tuning Help Needed Cobra 39lb Injectors
    By wa04compg in forum PCM Tuning
    Replies: 11
    Last Post: 06-06-2014, 11:50 AM
  3. tuning ifr for 65lb injectors
    By DoubleBlown in forum PCM Tuning
    Replies: 6
    Last Post: 12-14-2012, 09:01 AM
  4. So.... 130 pound valve springs.
    By OH4CompG in forum General Tech Discussion
    Replies: 2
    Last Post: 09-20-2012, 06:44 AM

Bookmarks

Posting Permissions

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