I'm normally a lurker here but thought I would post my death. Props to the Lex because I give credit where credit is due.

http://bsr.njsr.org/2004/121404/6.wmv

 

What mods if any did he have and what mods (besides the obvious catback) do you have?

Looks like a GS400/430 to me.

 

All I have is catback and K&N.

Lexus had TC and SRT intake. He jumped on me big time. I was surprised

I was starting to catch up but was running out of real estate.

 

Odd... my (stock in terms of power adding mods) GS400 would likely not have taken my (exhaust/CAI) LT1 Z28 from a stop up to 80, but after that I'm pretty sure it would have pulled on my LT1 by quite a bit. Kinda the opposite of what you described.

Then again GS400s have very wussy 'luxo' TC from the factory, so those aftermarket TCs really help their launch off the line.

 

What mods do you have on your GS4?

That TC really helped the Lex... as you can see it really got a huge jump on me from the start.