kevins2000LS1

iTrader: (11)

what gains can i expect from some pacesetter long tubes w/ 3' y-pipe

TransAminal

You'll probably gain about 20-25WHP.

With a tune, guys on here have gained 35-40WHP, which is very impressive.

Plus the engine runs more efficiently with LT's and a tune, so fuel economy can increase as well

phoenixv8

iTrader: (1)

quarter mile i gained about half a second.

BLK02TA

iTrader: (11)

So you went from a 13.8 to a 13.3 by installing longtubes?

BayAreaSS

iTrader: (10)

I was wondering the samething. I just added LT's and duals and my car feels a lot stronger! It also has a street tune.

Rob98LS1

iTrader: (5)

picked up about 3 tenths without a tune. My lts were stepped though .

bene

iTrader: (16)

I'm w/ him... I was running 13.5s prior LTs and now run consistent 13.1s w/ LTs w/o tune also.

kevins2000LS1

iTrader: (11)

dang 3-5 tenth is pretty good then i will deff. be in the 12's

chrs1313

iTrader: (24)

i would say same conditions...meaning air, launch 60ft you are going to gain at the most 2mph or .2 tenths with lontubes(this is only lontubes, and y not catback change or change to dual)...the stock exhaust and catted y flows better than you think...look at my times for proof...i am hoping to get 15 hp or .15 tenths from my qtps and ORY i will be shocked if i get 20hp IMHO

davered00ss

iTrader: (4)

You will see at least .3

chrs1313

iTrader: (24)

we will see when i get to the track and compare da and launches...really think about it though i would be at 118.4mph at 3330 weight (now) with -950 DA the fastest stock internal is what 121 mph and is 400 lbs lighter which is another 4mph so i am at 122.4mph, also i could still add gears and a 90/90 combo which i would say is worth at least 1mph together so i am at 123.4mph now...my da was 372 feet better which i calculated every 800 ft is around a tenth or 1mph so that puts me right around 123mph...so i am going to be 2 mph faster than the best SI car, just seems a little high to me to say 3mph at least, FWIW

also not sure if they were on an EWP too with is worth another 3-5rwhp or .5mph

so maybe even 123.5mph