I had all the mod in my car except Supercharged........... My car is 98 Auto and I am using Stillen Intake for now. I felt that Stillen intake is good at 60 mph and above. I have changed UR pulley and I felt it helped and make my caralitle more responsive.When I drove my IS300 with only K&N intake kit, I totally agreed that IS300 is much more responsive for the low end. SHould I try INJEN intake because so many people told me that Injen is good for Auto Max.......... I hate to feel loosing low end power. I also think to put Supercharged on my car , but I am scared to blow my transmision even I have a transmission cooller. Any opinion? However, how can I gain and feel the low end power. I have Cattman y-pipe,Random Cat, Greddy Cat back, UR pulley, Stillen intake, Big Brake System, FTB, RTB, RSB, Stillen Oil Coller, Hayden transmission Cooler,Don's Mod, KYB adjustable shock, 18' rims with Stillen body kit and etc........... But I still loose my low end power from 0-60...................

 

Change your intake. Try any cold air set up or Frankencar. That should give you your low end back.

Also make sure your throttle body is nice and clean.

 

Maybe even a knock sensor. Check your ECU, b/c a bad k.s wont trip the CEL alone.

 

Get an ACT street clutch and flywheel. You'll get your lowend power back.
But check your ECU maybe your knock sensor is failing.

 

Yeah, doing the tranny conversion knocked about a second off my quarter mile times.

 

you did read that he's an AUTO right???

 

Get rid of the 18's