The most members online in one day was 491, 08-27-2009.
-Ben-, 00civicEX, 01audis4, 02blkws6, 06sik20z3, 10SecSleeper, 2gDSM, 6speedblazer, 79TAKid, 924 driver, 94FD, 94z28driver, 95200sxboosted, 95lt4, 96CoBrA4.6, 96talonTSI, 99gsrteg, 99GT1, 99hardtop, 99spyder, Aaron91RS, ACSBimmer, adam12er, alowfodo, amair001, Amy, andyb16, Auto-Teacher, batmobileSS, bcncer, benvila, Big Steve, Big Swede, bigv, big_huff, black98ser, blksvtf, BmRB0y96, Bowtie_guy, brett8187, brrymnvette, bryanwheat, bullet, ChrisAW, ChrisBusa, civicex442, CJ-Racing, clevercat, CobaltSS, colbyc, corpse_grinder, crazytank7, crex91, Crows89RS, DaBeastWthn, daflipcyde, deadguyperez, deuce189, djfriedrice, dohchatch92, DragSpeed213, DSM tuneR, Dumi, dumpster, dunnhopen, E-racer, ENASNI TILLER, EVIL TSI, Evil_GT, Evolved, excelerator, F8LJEEP, fast02max, Flip, fwddodge, G8 GXP, g985, GAccord, GaryCHoffmann, ghostrider, gringoloco, Gru, H0NDA-MAN, h22wagon, Harvii, hatchd, hawaiianracer86, hidperf, HookandLadder, Humpty, Ice Cold, idryfly5, impreza_GC8, integra, intmid8r, J-VilleDivision, jdhommert, Jills03, jimbo7, jmlaudio, JoeRogan, Josh, Juicemayne, jvclsj, KGNickl, kikkinasphalt, Krenfro88, Landshark, lethal306, littlemissGTO, LOSS4U, LukeH314, maskedferret, MaxPower, mazda terd box, MazKid, Mazzer, MikeL, mikes_3r, mikey94z28, mild2wildGOAT, mild83, minitrucker83, mister-2, muskaroxs, nabyar, nad, NastyChevelle, NicK, nimblecivic, not2quick, Notyab, nRRe, nukem, outlaw71, Phantasm, phatty, PhoenixRising, ponyridin89, poppagun, prelude98, prelude98vtec, ProjectTSI96, Punch., Raceboy247365, rb24tee, RDunn, RedZenki240SR, ReinieR, RicedragonLS96, Rich Schaefer, rollinlarge2700, roy57, ruskiyab, RyanLt1Z28, samsel450r, SC50Si, Scoob, Scott, scott@ETtuning, SeanE55-AMG, secondreality, Shane, SixFourTwoHero, skitcrx, Sleeper, sleepylx, Slo3ValVe, SlowBaltSS, slowpok92, Smokem', smokinWS6, snkbyu2, Snowman, sociopath, SouthSideSpecB, spetsnaz, Spicy McHaggis, SScobalt, stcin7, Steevo, stlblkmsp, stlsoldohc, StlSteph04, StlSupra, supa, SVT8U, tantrick14, tbandit420, tboz, tcr03, Terry, Thatoneguy, the crusty pirate, The Shocker, The Tongue, TheFastRedOne, Thor, tipnitty, TMarsh, TotalEclipse, tt_er, turbo kraut, TVOR, twkdcd595, Tyler, tyler91, ur2nvs, v-tecivic, View Askew, waupachino, weemanAK, wheelie_jake, white2001S10, wickedlnf, wooddog, wrstdude, x357rq, xtreme_tj, zach_ws6, ZenkiS14

Josh, Cardinals4505 (24), Xxnissan300ZXxX (21)