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  1. 2

    Why is it so hard to shift into 1st gear from a stop?

    My car has the stock clutch and I have changed the transmission fluid once around 42K miles. I am the original owner and the car has 56K miles on it. For whatever reason, it's getting harder and harder to shift the car into first gear from a complete stop. If I am rolling just slightly, it...
  2. 2

    Looking for track recommendations near Chicago…

    It’s been a while since I have hit the track and I am looking to sell my car at the end of the summer. However, I wanted to make a few track runs with all of my mods. before I sell my car. I’ve added a bunch of mods. since my last track runs. My best ET is 13.89 @ 101 mph with K&N filter...
  3. 2

    Another satisfied Nitto DR user…

    These tires have made my car fun to drive again. I had Kumho 712’s before and they handled curves well and looked good, but they couldn’t take any aggressive launching or gear shifting. They would spin 1st and 2nd gear despite have lots of treadlife and sized at 275/40/17. If you like to spin...
  4. 2

    Plenum hype finally died down?

    Where are all the plenum posts? I recall many folks claiming they were going to go out and purchase one right after the plenum test results were posted. Where are the plenum success stories? What happened? Nobody talks about this mod. much these days.
  5. 2

    The Aftermarket TB/Plenum Advantage

    We all know that fuel is made up of gasoline and air. More air + more gasoline = more power. However, in naturally aspirated form, our engines are only capable of ingesting a very specific volume of air. How does changing the stock plenum and TB add any more volume of air into engine? It’s...
  6. 2

    Dyno graphs

    of two 250 rwhp 99+ 5 speed GT's. The blue graph has LT's, o/r x pipe, Mangapack CB & K&N. The red graph is my car.
  7. 2

    Tuning and plenum mod. questions?

    About two years ago I had my car dyno tuned for an a/f ratio of 13:1 at WOT with my current mods. If I add a new plenum/TB, who thinks I would need another tune and WHY? It's my understanding that if I have a programmed a/f of 13:1 at WOT, wouldn’t my computer strive to achieve 13:1 after...
  8. 2

    Stock gear 3.27 1/4 times and mph (NA ONLY)...

    I am curious if cars with 3.27's can produce just as good (or better) track times as cars with 4.10's. I am not interested in cars with blowers because those cars are in a whole different league. I am looking for NA cars that have hit mid 13's to very high 12's. Is it possible with just...