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Originally Posted by iamsickofitall
i put down 414rwhp/380tq with 232/234 .595/.598 @112 cam, ported 5.3L headsw/ 2.04 & 1.575 valves milled .010, UD pulley, LS6 intake, LT's, TSP catted y, TSP rumbler catback, lid
these numbers came on an 86* day with 30% humidity and an SAE correction factor of 1.00 - i don't know how correction factors work, but i know the temp and humidity were less than ideal and i figure the hi flow cats are robbing me <5hp and tq
as for track times - my clutch pedal started sticking to the floor at WOT runs about a week after my tune and i haven't gotten around to fixing it so I don't have any track times yet
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hi flow cats can rob alot more then that depending on how the person tunes for them....remember the stock a/f commanded on an ls1 aims for like 11.5:1 at wot...a good part of that is to keep the cats alive at high temps...the computer dumps in extra fuel to cool them down...thats the cot adder...if thats deleted & the tuner shoots for 13.0:1 or higher your cats will eventually blow out...so its a double edged sword...if he aims for 12.5:1 maybe they dont blow out as quick but you'll loose some hp but make more tq generally speaking. And dyno #'s are only a tool man keep that in mind... few people drive to and from a dyno every day lol. Track times/mph and driveability is where its at...im kinda biased in that i dont want a 10 second car that i cant drive every day...id want something that i can drive to the mall and back with no bucking or surging or hunting and just be able to light them up whenever i feel the need...the hit the track, run the # and say have a nice day.