A great thing about the LS1 engines is the tuning side of it is all done in the ECU. You really need to be geared up with a laptop and some great software to achive this. I purchased AutoTap Auto Tap/ got the enhanced version for the LS1 engine Auto Tap's EFI Live software. Its great for data looging and reporting error codes, many things you can check for manual or automatic cars. This told me about a vaccum leak not in so many words but did point me towards the problem so it could be fixed. Done some looging when going down Thorney Island drag strip, video of the car from a spectators view, can be seen here.

12mb AVI / MPEG Up against a Nissan Skyline V6 Twin turbo with NOS, well not sure if he used NOS down the strip, but he done the Fast and Furious NOS purge before the race.

Great to have a bit of American muscle throbing with power at low RPM. Next time will try to change into 4th gear, was in 3rd at 101mph, well was at 100 about 50 meters before the end. The silly thing is I set the rev limit to 6000rpm, this means its starts taking out cylinders about 5500 rpm. 6000rpm in 3rd = 100mph. The rev limit was set by another piece of software I have by HP Tuners, available at hptuners this enables you to change stuff in your ECU. First thing to go was the speed limiter. Next was the CAGS (Computer Aided Gear Selection) its a reall pain in the butt, happiliy pulling away on a roundabout in 1st gear between 15mph and 20mph, time to change gear, but think again, is only locks you out of 2nd 3rd and 4th, duh!, whats the use? apparently meant for fuel economy, but not so good when car is coming towards to and your coasting to a stand till. I used to end up in 5th gear, it was the only one I could get into. Considering 5th gear takes you over 160mph, its not really geared up for accleration at 15mph.
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