I havent done many but I love the UMI Short Stick I put on the car....Cheap also.

 

98 M6
LS6 intake + P&P smokinTA TB=1st
LT's+ ORY=2nd
Lid+ Smooth bellow= didnt feel a thing

 

Stock - 13.6 @ 104mph
Lid, Maf ends, DR, and free mods-13.2 @ 107
Cut out, plugs and wires-12.9 @108
Pully & Bassani ORY - 12.6 @ 111 = Fav. Mods so far
Ported TB and 1.85 60' -12.4 @ 113

 

Nice times!

 

all mods listed

Im a M6

Best mod ( feeling pwer) was LT and ORY at once...

In order of mod/did I feel a difference:

-descreened MAF/no

-!cags/yes

-K&N/no

-lid, bellows/hardly

-SLP LM/hardly(sound difference)

-LT and ORY/yes and sound difference like hell

-spohn LCA/a bit

-aluminum fw and ls7 clutch/yes revs faster and felt a bit quicker

-springs/koni/35mm sway front and 21mm rear/hotchkiss phb/apc sport seat/simpson 5pt harness/ hawk brake pads/ 25% underdrive pulley //// handling difference, ride height, but no power difference..

-Rebuilt T-56/ yes I can shift again!

-Moser 12 bolt(3.73s truetrac)/yes car felt slower/heavier/suspension is off/ gears end sooner/ only good thing IMO was my 4th gear on highway.

-UMI Torque arm and driveshaft loop and 3pt SFC/ car still felt like crap since suspension was off and I had M/T et streets(rear) at the time and cheap sumitomos in front.

after Nittos(rear), car felt a bit stiffer, but still feels off. oh and I think I have a broken shock, maybe my pinion angle isnt correct and LCA geometry, to say the least these are all possibel candidates that the car feels like crap compared to before.

-Ported Throttlebody/not really, just some more lowend pull

-Bogarts and slicks/yes

 

My daily driver, which has made my commute easier and helped me save enough money to build my 408/ dana 60

 

m6 LT with TD..lid tb cam, head, 150shot, underdrive pulley, most favorite mod is 150shot feel like the bird flying

 

installed a lm1 catback and ls7 clutch, an then i installed the rest. so im not sure

 

spec 3+ clutch & pro 5.0 I like them better than all of my power mods.