Well..finally going to tune my car tomarrow but im short of a 3"muffler...so i guess im tuning it without one..just straight from downpipe to the end of where i am going to weld my muffler on... it is loud as @#$%... will this cause any problem with the tuning...? and what will happen when i do put the muffler on after tuning it.? People tells me that it will run a little richer...help guys....

 

if you run a dp for 2.5 and you tune for it. and then put a 3inch on it will be ok. 2.5 and 2.5 piping you might be a little rich. it should be ok

 

its a 2.5 dp with 3" exhaust straight through....with no muffler...you guys think it should be alright?

 

i think it should be ok..it just might be a little richer...