quick 4'' downpipe question
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quick 4'' downpipe question
i know this has to have been covered many many times as probably most people running a 4'' downpipe do not have 4'' exhaust. I have a 3'' downpipe currently on a mini ram manifold. I believe I will stick with this manifold unless i get the sudden urge to make a topmount, or ram but i prefer the fastest spool I can get and this manifold did pretty good on the last setup.
My question is, if I do opt to make a 4'' downpipe for my new setup about how far from the connection to the 3'' exhaust should i start to "merge" the 4'' down to 3'' or does it not really matter?
My question is, if I do opt to make a 4'' downpipe for my new setup about how far from the connection to the 3'' exhaust should i start to "merge" the 4'' down to 3'' or does it not really matter?
#3
Re: quick 4'' downpipe question (swappedcx)
Its plan stupid to have a 4" DP and a 3" exhaust. Really, just plan stupid. I could see if you had a 4" outlet on your turbo, but Id bet anything that you dont. How much power are you making or trying to make?
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Re: quick 4'' downpipe question (slow poke)
Wow, alright you dont have to go off there.
Its a sc61 with the S housing. Its no little 18g **** here im trying to slap a 4'' exhaust on. How many people on here actually have 4'' downpipes and 4'' exhausts? Sure I can do a e-cutout but I dont want to. And how is it pointless to have a larger downpipe then what the exhaust outlet is? I believe there was a rather large thread debating that.
This is a 600whp+ plus build.
Its a sc61 with the S housing. Its no little 18g **** here im trying to slap a 4'' exhaust on. How many people on here actually have 4'' downpipes and 4'' exhausts? Sure I can do a e-cutout but I dont want to. And how is it pointless to have a larger downpipe then what the exhaust outlet is? I believe there was a rather large thread debating that.
This is a 600whp+ plus build.
#5
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Re: quick 4'' downpipe question (swappedcx)
Id do 4" DP/Exhaust or just do 3" all the way. Your outlet on your turbo is 2.5", going from 2.5-4-3 doesnt make much sence IMO. I have done many setups on my car such as:
3" turbo back
3" turbo with 3" e cutout to RSR exhaust
4" turbo back
I dont see any real benifits from doing what you want to do except for bragging rights. 4" the whole way is not that bad on the street if you use a muffler and resignator. my frist 4" exhaust was 4" all the way back with no mufflers or anything - that was loud
3" turbo back
3" turbo with 3" e cutout to RSR exhaust
4" turbo back
I dont see any real benifits from doing what you want to do except for bragging rights. 4" the whole way is not that bad on the street if you use a muffler and resignator. my frist 4" exhaust was 4" all the way back with no mufflers or anything - that was loud
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