futuref-body

iTrader: (2)

my car currently has stock manifolds, hollow cats. (3'' all the way back) and the borla adjustable cat back. got tired of 1 side being louder/sounding different so i got a pipe cut for place of the muffler so now its truely straight. my time with the borla in the 1/4 was 13.98. without it + mti clear lid, smooth bellows, and slp MAF without tune was 13.25. if i had a muffler would it cause more back pressure possibly making me run faster? or since it is not duals and only manifolds im fine? im also thinking about getting longtubes for christmas so would it help to get a muffler when i install those?

01ssreda4

iTrader: (96)

no-muffler and free flowing muffler should yeild virtually identical results at your power level.

the_merv

iTrader: (88)

You will see a really good gain with LT's.

futuref-body

iTrader: (2)

thats what im hoping but say i install long tubes and run 13.00 in the 1/4. if i install a muffler (single in dual out)will that create more backpressure causing better times cause i need some backpressure or will i have enough with it 'straight-piped' so it will slow me down?

Flaring Afro

the only back pressure needed is created by pipes. if you were running open headers, you should loose low end.

our cars will do low 13s stock though. 13 flat is possible too. a 350Z would keep up with what you are doing. what kinds of tires do you use?

futuref-body

iTrader: (2)

damn! 275 nexen n3000. thought i was gonna sell the car and they were cheap soo... they are not the problem i hook up perfect. my car shifts real hard and quick but when it shifts to second it lags bad!