edmc1

I have a 09 silverado, 5.3.. and have done a volant cold air intake, and a 91 octane power program. But the trucks seems very doggy at low rpm, like when i romp on it from a stop, the truck just bawgs, and doesn't really go.. and the tranny just doesn't seem to keep up.. Is anyone else exsperiencing this? when the rpms are high, man the truck just comes alive.. i'm most likely going to do magna flow dual exhast to help the breathing but who knows.. just may be a doggy 5.3... Maybe i'll add a supercharger.. LOL

nauticstar87

do the supercharger...LOL My truck has a hard time at lower RPMs to. I think its the gearing of the trans and rearend, feels like hesitation. About to see if a Blackbear Tune will help.

mudmaniac

It's the gear ratio, the 5.3 develops pretty good hp but is shy in torque at low rpm.

s34n

i have no problems in the low rmp range. on certain streets and inclines i can squeal the tires.

mudmaniac

I have the 3.42 gears in my 06 1500 Z71, if I can break traction with a little bit of a turn when I take off, it will smoke em into 2nd gear. For towing I wish I had the 3.73.

s34n

whats your gear ratio cuz my sister had a tahoe with the 3.42 gears and it didnt go anywhere in the low rpms. but in the higher rpms it had some get up

mudmaniac

Ummm, read my post again. I have the 3.42 gears.

s34n

mud,is yours 2 or 4 wheel?

mudmaniac

1500 4wd Z71 ext. cab sb wth a tru-flow intake and flowmaster exhaust from the y-pipe back.

s34n

her was 2wd. pretty close to a base package so maybe that had something to do with it.