I am in the process of installing a B&B Route 66 exhast system and a vortex air rammer on my 2001. I should have the modifiactions complete by the end of the week, and will dyno it afterwards. I will let you know then of both actual and percieved changes.
This car does not need a whole lot of changes, but you can never have too much power, or too much fun!!!!
Put a Corsa Indy Pace Car exhaust with polished 3 1/2" pro-series tips and a Bassani X-pipe on first...looks great, sounds awesome! Then I went to the intake side; Vortex Rammer cold air induction, modified MAF sensor (no screen), high flow air duct with coupler, and a modified throttle body -- neck-snapping acceleration, even with an auto and basic rear-end. I've got to admit, the intake side had the greatest effect on performance, especially considering the costs, but I do love the sound of my exhaust....I usually don't play my stereo just so I can listen to it!
I replaced the stock air filter box with a ZO6 box and SOTP it is stronger. I installed the hood seal and drilled some holes in the fog lamp area to let more air in the engine compartment. I have the drilling pattern that I got from another C5er if you would like it. Takes about 20 minutes to do. Most of my mods have been cosmetic in nature as I am trying to works up the cojones to do more. I'm looking for a way to homebuild the ZO6 cold air screens.
I got my ZO6 air box from the vendor in this thread http://forums.corvetteforum.com/zerothread?id=163667
reasonable price and shipping. Probably could get it at your dealer for the same prices if you showed him th epage, hehe..I have the document on my hard drive , if you could get meyour e-mail I'll send it.
It is really hard to say how much faster it feels, but I espically notice the difference a 3 grand when you nail it, there is no doubt you is gone. The B&B exhaust is sweet, no xtra noinse at all at cruizing altitude, but a nice growl at idle, and slight increase in sound at heavy throttle.
Overall for under $1,300 a real nice tweak to an already mean machine.
Almost forgot to mention, I ordered the oval tips on the exhaust to appear stocklike, and the appearance of real stainless exhaust vs stock cheaply attached tips makes me smile everytime I walk behind it.
on my 98 I started with a dyno sheet of 343. I added Mid america straigt pipes for great sound B&B headers , Hypertech (waste of money) LS6 intake rammer air duct , mass air flow no screen, votex, hood seal.and adjustable fuel pressure reg(stock is to rich)
Dyn after and I am at 409.7 everything showed some of a gain except the hypertech it changed shift points and also the fan realy at 170. I am very happy with it and can run with a 2002 Z06 with the fun of a conv.
Thinkng of NOS for more with out going into the engine.