programmer for 2001 ws6
But to answer your question, GMHTP did a write up a while back that compared several handheld units and overall the Diablo seemed the best to me. It didnt make as much power as one other model that they tested (I dont remember the name of it, I think it was Italian?) but that one gave the car really erratic idle that they mentioned was pretty annoying. And I can imagine that would be even worse with an Automatic car.
The other thing I can say for Diablo is that their customer service has been great for me so far. I asked Mike some questions a few times and he was always helpful and quick to respond.
I had a hypertech for my 96 and never was very happy with it. Just didn't seem to do much for power but I did like how it made it shift harder. (Diablo's do that too)
The other advice I can give is that if you do go with a handheld, once all the programming is done, disconnect the battery for a few hours so the car will have to relearn its parameters with the new tune. It does this either way but this makes it happen "quicker". In reality, it just makes it easier for you to notice the seat of the pants difference. Otherwise you end up thinking, "I can't tell if it's any faster or not". BUT, as previously stated, a good dyno tune or mail order will probably get you a lot more from your car.
text 9378770000 or tw-tool@hotmail.com

Do the hand held programmers also do a stock tune to return everything to original? I've got some spark knock in upper RPMs on my 2000 TA and I'd like to make sure it was starting with a stock tune to rule that out. I don't know if it was ever tuned by the previous owner or not.
Trending Topics

Do the hand held programmers also do a stock tune to return everything to original? I've got some spark knock in upper RPMs on my 2000 TA and I'd like to make sure it was starting with a stock tune to rule that out. I don't know if it was ever tuned by the previous owner or not.
The Best V8 Stories One Small Block at Time

Do the hand held programmers also do a stock tune to return everything to original? I've got some spark knock in upper RPMs on my 2000 TA and I'd like to make sure it was starting with a stock tune to rule that out. I don't know if it was ever tuned by the previous owner or not.
Now, if I misunderstood the question then please forgive my butting in and listen to everything that Madellous said. Because he is correct, that you can change from stock to custom and back as you please, with any of the handhelds.
Now, if I misunderstood the question then please forgive my butting in and listen to everything that Madellous said. Because he is correct, that you can change from stock to custom and back as you please, with any of the handhelds.
Thanks!
Scott
My opinion would be to get yourself hooked up with a good shop that has someone who does tuning on a dyno. I tried the hand-held programmer route, but never was completely satisfied with the results.







