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I seriously thinking of adding a head and cam package to my 2000ht. My question is it necessary to reprogram the computer? Also, can I expect any error messages on the dic? Thanks for the help.....
As long as you have the work done by a reputable shop that can dyno tune your car, you should be okay. The shop will modify your computer programming, but you won't have any DIC messages to worry about. My car runs and idles like stock (except being much louder and faster. :D) after having my heads/cam done at Cartek.
It is my understanding the computer reprogram needs would be based on the cam setup you choose. ARE for example sells a mild package that requires no programming changes. It all depends on how much you want to get out of your car. The more "radical" the cam, the need to reprogram increases. Many tuners that sell heads and cam packages out the door that require changes to the programing have preset programs they can program into your computer if you send it to them. You are better off having your car tuned in person though after the install. As far as programming goes, I think even on a stock car you can see good gains from dyno tuning by an experienced tuner. Good luck with your decision. I still can't decide between H/C or Magnuson super charger. :smash:
I seriously thinking of adding a head and cam package to my 2000ht. My question is it necessary to reprogram the computer? Also, can I expect any error messages on the dic? Thanks for the help.....
It will be necessary in most stage 2 packages as the factory rev limit is set well below where the new cam will make peak power. You will want to optimize other things as well, such as shift points(A4) , idle, fuel, timing, etc.
LS1 Edit is now out, and it's the first opportunity that shops have had to begin tuning LS1's in-house. Prior to this, you had to have it custom tuned by Ed Wright, Steve Cole, etc. I would highly recommend going with custom tuning. Ed Wright has my PCM right now to adjust for the new cam that was installed last week, and his tuning REALLY helped the streetability of my car! It's an A4, and he set converter lockup at a lower MPH to help with the loose torque converter. I had him do other things like set shift points, raise idle, raise rev limiter, delete rear O2's, delete maxed out MAF code, set my transmission line pressure to vary directly with the TPS, delete torque management, etc. His tuning was good for right around .2 in the 1/4 for me, but it's because I'm an A4. My stock shift points were VERY low, and torque management was really hurting my 1/4 ET.
I say do yourself the favor and get your setup tuned. You'll have some added power, you'll know that your a/f ratio is correct, and your setup will be more streetable.