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 111 of 111
  1. #101
    GXP Level Member GTPpower's Avatar
    Join Date
    May 2008
    Location
    Schuyler, NE
    Posts
    2,359
    Chats
    257

    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
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    520
    Chats
    121

    Default Re: Tuning 60 pound injectors

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

  3. #103
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    520
    Chats
    121

    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. parting out, transferring parts to 2007
    2007 Grand Prix GT. Under construction Pacesetter headers, 1.8 roller rockers, Wizair CAI, HPTuned, 3.4pulley, TEP 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
    20,368
    Chats
    80575

    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
    93
    Chats
    20

    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, 3.6/3.4/3.2/3.0" MPS, 60lb injectors, E85, FP rewire, 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
    3,813
    Chats
    24418

    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
    2,359
    Chats
    257

    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

  8. #108
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    520
    Chats
    121

    Default Re: Tuning 60 pound injectors

    What gap would you run on 93 octane and a 3.4 pulley with iridium plugs?

  9. #109
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    36,786
    Chats
    147649

    Default Re: Tuning 60 pound injectors

    .050 works fine for me, i also run copper core 104's. if your modded at all, run copper plugs.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  10. #110
    GTP Level Member
    Join Date
    Jun 2016
    Location
    Cleveland ohio
    Posts
    520
    Chats
    121

    Default Re: Tuning 60 pound injectors

    Ok thanks.
    It seems like I got better acceleration when I use iridium. I used copper and it didn't seem to accel as well, but I also had on the crap Zzp wires at that time.

  11. #111
    Killa Bee Scottydoggs's Avatar
    Join Date
    Aug 2010
    Location
    new jersey
    Posts
    36,786
    Chats
    147649

    Default Re: Tuning 60 pound injectors

    try the 104's gaped to 50. they are cheap enough.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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
  •