performance upgrades

[jordan379]

I have a 2004 gmc sierra z71 I have installed a brute force cold air intake with a k&n air filter jet mass airflow sensor poweraid throttle body spacer shorty headers cat detele vmax muffler mild trans build but still Dnt feel like it did a lot any ideals?

[desrtrat]

I have a 2004 gmc sierra z71 I have installed a brute force cold air intake with a k&n air filter jet mass airflow sensor poweraid throttle body spacer shorty headers cat detele vmax muffler mild trans build but still Dnt feel like it did a lot any ideals?

put the stock maf back on, remove the tb spacer, put cats back on, replace the muffler with a straight thru one, magnaflow, bola, corsa, shorty headers don't due much on ls base motors, and get a good tune. black bear is a vendor here..what trans work did you have done?

[WilliamBos]

put the stock maf back on, remove the tb spacer, put cats back on, replace the muffler with a straight thru one, magnaflow, bola, corsa, shorty headers don't due much on ls base motors, and get a good tune. black bear is a vendor here..what trans work did you have done?

Exactly! Put stock airbox back on, add Airaid MIT, and look up Black bears dyno tests. Can't build an LS like a small block.

 

Put Cats back on, they are highflow, removing won't gain anything.