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  1. 0

    Gained 23 rwhp with LT Headers (see dynos)

    I could have gotten the Hooker LT chrome headers (6396) for $470. I decided to go with the ceramic coating for two reasons: (1) the headers last longer, and (2) the engine compartment doesn't get as hot. The shop I went to specializes in performance parts. They knew what they were doing and...
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    Where to find aluminum driveshaft for automatic?

    Someone else posted that they used the aluminum driveshaft for manual transmissions on their automatic. To make it work, they simply used the original yokes. Do a search; I am sure that you will find the post.
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    got my 4:10's installed

    Congratulations on the 4.10s and the new times! How do the Nittos work with the 4.10s? I've heard that this combination can put a lot of stress on the rear end. Maybe it's more of a problem for those who dump the clutch with their manual transmissions.
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    Gained 23 rwhp with LT Headers (see dynos)

    I bought my parts from Thunder Racing. The Hooker LT ceramic coated header (6230-1) cost $699.99. The matching Hooker o/r x-pipe (16762) cost $139.95. The installation charge was $115 @ hour for 8 hours, totalling $920 for labor. The total cost from beginning to end was $1759.94. Whether I...
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    Gained 23 rwhp with LT Headers (see dynos)

    If you had a 14 year old son and an 11 year old daughter (sibling rivalry), you too would enjoy alone time in your car. This was the perfect gift: A time of peace and quiet, as well as the exhilaration of acceleration. :)
  6. 0

    lost low end torque with LT headers

    I did have a problem hooking up with the additional 23 rwhp. Spinning the rear times is actually kind of fun, especially since my auto vert was reluctant to spin before. Anticipating the problem with traction, I had Steeda lower control arms installed at the same time as the headers. Yet, the...
  7. 0

    lost low end torque with LT headers

    What mods would you recommend? I already installed Steeda lower control arms. I'm thinking of buying some Nitto Drag Radials. Anything else?
  8. 0

    Gained 23 rwhp with LT Headers (see dynos)

    For my father's day present yesterday, I went driving around. I put 150 miles on my newly modded stang. What a blast. The car pulls strong from 3000-6000 rpms and then slowly returns when decelerating. Although an expensive mod, it was surely worth the expense.
  9. 0

    lost low end torque with LT headers

    What is really weird about the dynos is that they seem to compare apples and oranges. The pre-mod dyno compares STD horsepower and torque with speed (mph) while the post-mod dyno compares SAE horsepower and torque with rpms. What's up with that?
  10. 0

    lost low end torque with LT headers

    I thought that someone else had posted about the loss of low end torque with LT headers when followed with an o/r x-pipe. They explained that the loss of torque was due to the loss of back pressure. Anyone remember this discussion. I seem to be having the same problem? I just had Hooker LT...
  11. 0

    Headers

    I am the one who made the gain of 23 rwhp, but keep in mind that I have numerous intake mods and that the installation of the LT headers included a dyno tune. Also, keep in mind that Hooker LT ceramic coated headers will cost around $700, and the matching o/r x-pipe will cost around $135...
  12. 0

    Gained 23 rwhp with LT Headers (see dynos)

    This means that I gained 15 rwhp with my induction mods (plus performance tune and underdrive pulleys) and 22 rwhp with the LT headers and o/r x-pipe. This seems reasonable to me. I still wonder why the baseline dyno was done in STD horsepower and the modified dyno in SAE horsepower.
  13. 0

    TB Whistle

    I installed a Dragon plenum and it whistled upon acceleration, especially around 2000 rpms. I contacted Dragon, and they said that this was common for their plenums. It seems that the divider inside the plenum causes the whistling when it splits the air flow. I found the noise to be annoying...
  14. 0

    Gained 23 rwhp with LT Headers (see dynos)

    I'm also curious about the difference between STD and SAE. I noticed that the performance shop completed my baseline dyno with STD horsepower but my modified (headers) dyno with SAE horsepower. Are we comparing apples and oranges here? Does this mean that the headers did not really net me 23...
  15. 0

    Whats soo good about those 4.10's???

    I really enjoy my 4.10s. They really woke up my car, which is a convertible automatic. It accelerates much faster, though it does run at higher rpms down the freeway. Think of a 5-speed bicycle. 4.10s are comparable to 1st or 2nd gear while 3.23s are like 4th or 5th gear. From a dead stop...
  16. 0

    Gained 23 rwhp with LT Headers (see dynos)

    With a 3-5 rwhp loss with the 4.10 gears, my previous mods would have added only 11-13 rwhp. Does this seem possible?
  17. 0

    Gained 23 rwhp with LT Headers (see dynos)

    If a 20% loss for an automatic is correct, then a stock Mustang has 217 rwhp, assuming 260 bhp. This would mean that my Diablo performance tune, Steeda underdrivey pulleys, Accufab 75 mm tb & plenum, C & TrueFlow inlet pipe, K & N filter gained me a whopping 8 rwhp. This still doesn't make...
  18. 0

    Gained 23 rwhp with LT Headers (see dynos)

    Attached are the before and after dyno charts for my 2001 Mustang GT. My stang now feels and runs like a real muscle car. I was excited that I gained 23 rwhp with the Hooker LT headers and o/r x-pipe, but I was disappointed with the base number: 222.8 rwhp. I always thought that a stock...
  19. 0

    How to tell if 03 GT isn't running as fast as it should be?

    Have your car dyno tuned. They can set the timing and a/f ratio to get the maximum horsepower out of your car.
  20. 0

    Performance Gains from Longtubes?

    I will be picking up my car later today with newly installed Hooker LT headers and o/r x-pipe. The shop is also going to dyno my car before and after the installation. I will be sure to post the results.
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