2.5 vs 3 inch exhaust,
#1
2.5 vs 3 inch exhaust,
I have a greddy turbo an manifold. I am thinking about redoing my exhaust without a cat and resonator.
My goal is 200hp or 9 psi, which ever comes first.
What are the pros and cons in these two different exhausts sizes?
Nick
My goal is 200hp or 9 psi, which ever comes first.
What are the pros and cons in these two different exhausts sizes?
Nick
#2
Re:2.5 vs 3 inch exhaust,
Choose whichever size is approximatly 10% larger than the turbine outlet diameter. Bigger is usually better but not in every case. For your power goals, a 2.5" will be more than suffecient. If you plan on a power increase later on, go with something larger. Just make sure that you compensate for drag in the muffler, cat and/or resonator by a suitable diameter increase.
#7
Re:2.5 vs 3 inch exhaust,
I was just wondering if anyone of you guys use your stock exhaust or did most of you upgraded to 2 1/2?
I hate the sound of a huge exhaust and would much rather stay stock exhaust.... but just wanted to know your thoughts...
(sorry for hi jacking ur thread... just didnt want to start a new one for this question regarding exhaust)
I hate the sound of a huge exhaust and would much rather stay stock exhaust.... but just wanted to know your thoughts...
(sorry for hi jacking ur thread... just didnt want to start a new one for this question regarding exhaust)
#8
Re:2.5 vs 3 inch exhaust,
I used stock exhaust...it sucked donkey dick :P .
I ran open 2" downpipe an it was sweet...connected it to my stock exhaust system that was like 1.5" or somthing ...like a straw and the turbo spooled soo late man and it died at 6500 rpm that was just sad....I just could have left the car NA
I ran open 2" downpipe an it was sweet...connected it to my stock exhaust system that was like 1.5" or somthing ...like a straw and the turbo spooled soo late man and it died at 6500 rpm that was just sad....I just could have left the car NA
#9
Re:2.5 vs 3 inch exhaust,
Originally Posted by B16Drag
I was just wondering if anyone of you guys use your stock exhaust or did most of you upgraded to 2 1/2?
I hate the sound of a huge exhaust and would much rather stay stock exhaust.... but just wanted to know your thoughts...
(sorry for hi jacking ur thread... just didnt want to start a new one for this question regarding exhaust)
I hate the sound of a huge exhaust and would much rather stay stock exhaust.... but just wanted to know your thoughts...
(sorry for hi jacking ur thread... just didnt want to start a new one for this question regarding exhaust)
I'd say a good 25-35% it quiets it down.
Jeff
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