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  1. H

    Should be alot faster

    Went to the track this weekend, did not do anywhere near expected. 87 GN with 36lb inj. down pipe, stock turbo, chip, fuel pump, K and N. Original tires. Regular pump gas. Did no better than 15.1 .....why Should be in the 13s. Special note. when car drives and warms up on highway. if...
  2. H

    boost not boosted enough

    1st. My 92 typhoon never gets above 10psi!!!! Why is this? 2nd. Can anyone also verify that once you start the truck, the first time you accelerate hard the boost is limited, the second time you accelerate hard the boost will go all the way to 18psi? Once you turn the key off it starts...
  3. H

    tired, need help

    Just bought used 89 rear rims from a GTA with a 16mm offset, what do I have to do to get them to work on my GN. Do I need to know what offset the GN's are if so what are they? I will be placing 245/50 16 on these rims.
  4. H

    Tired, need help

    Just bought used 89 rear rims from a GTA with a 16mm offset, what do I have to do to get them to work on my GN. Do I need to know what offset the GN's are if so what are they? I will be placing 245/50 16 on these rims.
  5. H

    Offset question

    Just bought used 89 rear rims from a GTA with a 16mm offset, what do I have to do to get them to would on my GN. Do I need to know what offset the GN's are if so what are they? I will be placing 245/50 16 on these rims.
  6. H

    bolt pattern, who knows

    I am trying to buy 4 rims. I don not know about bolt patterns so I will ask. Will the following fit on a GN? Bolt Pattern: 5 x 4.75 or 5 x 120.65 (8J) on a matching set of 4 used Original GM Machined Mesh Front and Rear Red Alloy Metal Rims pulled from a 1988 Pontiac Firebird GTA. Set...
  7. H

    bolt pattern, who knows

    I don not know about bolt patterns so I will ask. Will the following fit on a GN? Bolt Pattern: 5 x 4.75 or 5 x 120.65 (8J) on a matching set of 4 used Original GM Machined Mesh Front and Rear Red Alloy Metal Rims pulled from a 1988 Pontiac Firebird GTA. Set includes 2 16x8 Machined Mesh...
  8. H

    GNX still rims

    do not know if I have posted this in the right way. I am looking for GNX rims or the like. Please forward any available rims to purchase (4)
  9. H

    Sputter, sputter,sputter

    I just updated my GN with 36# injectors, fuel pump, wires and the car ran fine. My neighbor did something behind my back to mess with me and now my car, once warmed up - normal driving chugs like the carx commercial from years ago. It barely makes it in low rpms until I get into the 25mph...
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