hey i know its not an HD but i have a trailblazer 5.3 and was wondering if anyone knows are there any programmers for it out there. pop has one in his yukon xl and wants a little more snap out of it too.
the short version does and the long version it is standard, but if your nuts and have to have the most power you can get, you can get teh optional 5.3l V8. mine has everythign but the sunroof and the Northface package. got the DVD for the kids instead.
Who makes a good programmer for the 5.3, exhaust is coming as soon as my father in law gets to it. my wife can kill me for messing with her truck, but would she kill her own father??? As far as intake and headers im starting the search now and looking for good advice.
For both of you guys a Westers ECM, Predator Programmer or a Superchips will help a lot. Next, you need a good cold air intake. Like a Volant or a UPD. Then you can always do a set of headers and a good cat back exhaust.
I had a 2000 silverado 1500 4x4 xcab sb with the 5.3 in it and I had a hypertech programmer, cat back exhaust, k&n fipk and a throtlebody spacer and it ran 15.800 @88mph in the 1/4 with 265's and 3.73 gears......... Stock it ran 16.7. Pretty good improvement I think.
hey, My expertise here. The 5.3 is a great motor, LS1 based which means many many mods out there. check out www.ls1tech.com. www.tbyrnemotorsports.com has a great deal of stuff too. Heads and cams will net well over 450 hp with tuning. www.ls1truck.com is a great place also. Diablo is pretty good also for programing on the fly but ls1 edit is the way to go. If it were my truck, i'd do, volant cold air intake, cat back, headers if they have em for your ride and a custom tune. you'll be a lost faster.
I'm not fond of headers but I know straight piping mine gave it more low end snap and abit more top end rev. It had to relearn to not drop the idle too low with the increased flow though.. If you don't like straight pipe or need to get emissions tested, I put a glasspack on dad's and it is nearly as loud as mine and just as snappy.
You are right about net gain too, I am sure from the k&n (15) the straight pipe (10?) I figure I got at least 10? I know it beats a stock truck with just that much difference. My mileage went up from 11 to 12.9 with these mods as well.
12.9 (less in the winter) really sucks bad though I think... Not sure why it is so bad when the truck runs so good.. Even having the right pedal stuck to the floor all the time it ought to be better than that? Truck is a fuel
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