• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Recent content by GTPNovak

  1. G

    91 E10 or 91 without

    I did a search and it all came back with results about MPG. So my question is will running 91 without ethanol cause higher cylinder temps possible causing KR if the car is on the edge and with 91 with E10 might be cooler keep the KR away or lower? this is based on a GTP, headers, exhaust, 3.4...
  2. G

    87516CB Cherry Bomb GlassPack

    I currently have SD headers no cat and the SLP non-resonated cat back (Proflow mufflers). It is annoyingly loud and drone for days. Based on searching the best solution is the 30" glasspack. The car is embarrassing to drive right now as it sounds like a beater that lost its exhaust and no one...
  3. G

    P0140 code help

    I installed SD headers without cat. I put in a modified o2 sensor (new Bosch sensor) to account for no cat. The modification is a 1 mega ohm resistor and 1 micro farad cap added to the sensor to simulate a cat, it worked great on my Ford. The computer on the GTP is telling me no...
  4. G

    Upstream 02 sensor speed daddy

    I worked the fire wall a little but it looks like i need at least 1/2" to get the sensor in. I read about the corvette sensor being shorter. i would rather buy a new 02 then keep air hammering the fire wall. what did you guys do when you installed headers?
  5. G

    Door hitting fender

    GTP coupe drivers door hits fender when opening the door. Fender is bent now. Researched the fix, ordered the Dorman 38490 hinge pin kit and installed it. unfortunately it did not help. I tried shims and it helped but kinda at a loss for why it is still hitting. Door shuts fine looks lined...
  6. G

    Radiator drian Plug Part number

    I looked on GM part search and they dont list it. Has anyone replaced the drain plug. Mine does not lock in after multiple coolant flushes.
  7. G

    Breather nut?

    I went to put a MPS on the car today and found out i dont have a breather nut on the supercharger. Bought the car this way, i know the supercharger was replaced by a dealer before i bought it. guessing i need to get one to install after the MPS is installed. Did some searching and found a...
  8. G

    overkill tune

    planing to send my PCM in for an overkill tune. Any suggestions on what to ask for. I will provide him with my complete mod list. I kept the EGR so not sure if i should have him delete it just in case i remove it due to leaks after i get the car back out after the salt is off the roads. 3.4...
  9. G

    GTP Daytona fixing the LIM leak update

    So far i have the lower intake gasket changed, did the LIM modifications, valve covers and gaskets replaced, AL coolant elbows, Speed Daddy headers installed, bought a MPS and found out the car already had a dropped pulley of 3.4 so i will have a 3.4 press on pulley and 3.8 MPS pulley for sale...
  10. G

    Valve cover part number

    I found out today that SC vs NA 3800 valve covers are not the same. So i have a new GM NA 3800 Rear (right) cover, and need to order the SC one. Can anyone confirm the GM part number so i dont screw up again! I believe it is 12590364. Thanks
  11. G

    Smoothflow Pulleys and Machining great experiance

    I finally decided to upgrade to a smaller pulley and found Smoothflow on ebay with good prices, the background checked out and quality work. Messaged him early Saturday morning asking for a special order instead of just what he had listed on ebay. To my disbelief i had a response with in 5 min...
  12. G

    Alternator Bolt

    It appears that PO forgot to install the lower front alternator bolt, if any one has one i am in need. 2000 Grand Prix GTP
  13. G

    Aftermarket cooler

    I think based on the hose clamps the PO added an additional transmission cooler. It is causing leaks where he spliced into the lines as well as the lines on the heat exchanger. Is it helpful and i should fix the connections or should i just remove it and get a new factory line to reseal the...
  14. G

    Terminology for mods, aftermarket, and replacement factory parts

    Does grand prix fourm have correct terminology for this? I assumed anything that is changed from factory is a modification? I keep hearing that exhaust, intake, pulley, tune, porting, plugs, and ect. is not a modification. Only when you change internal on the engine is considered a...
  15. G

    Engine Maintenance and upgrades

    I have a LIM gasket leak and have some parts to put on. my thought was remove thermostat reinstall the housing with supplied gasket from gasket kit (not needed when thermostat is installed). - Fully flush the cooling system, refilling with water and have it circulate by running the engine...
See more
Back
Top