2.5in or 3in exhaust ?
#1
2.5in or 3in exhaust ?
hey guys, so im going turbo and at the moment i have full pipings 2.5in exhaust... i would like to know if i would have to go to 3in for turbo or can i just stay at 2.5in? if so whats the difference ?
#2
Ive definitely heard 2.5 is ok unless your going for high boost then you want 3 or itll be restrictive. Theirs a couple threads around here where people talk about that run a little search
#4
^ I agree with the above comment. I'm boosted and have a 2.5" exhaust right now and I can tell on the big end that my tC really wants to get rid of that exhaust and like the above post said, I'm sure I'll have a little bit more pull/power higher in the powerband once I get the 3" setup.
#5
^ I agree with the above comment. I'm boosted and have a 2.5" exhaust right now and I can tell on the big end that my tC really wants to get rid of that exhaust and like the above post said, I'm sure I'll have a little bit more pull/power higher in the powerband once I get the 3" setup.
#7
my 60-1 is on a .63 ar turbine and it pullls like a bat outta hell up top compared to the 50 trim i had with a .63 all this being on a 2.5 exhaust i dont plan on doing away with it niether considering i will already be spending lots of money in the near months for a new maf a new primary o2 and a new tune the 2.5 still allows me to reach my goals which is 330 on 13 psi this being on a tune i had for my 50 trim with just fuel adjustments cant wait for the timing to be on =D
#8
so i talked to my builder, and he said i can leave my 2.5 as a daily driver and have a switch to an open dump when racing... im going to be running about 350hp... should i do that or just get a 3 inch ?
#9
IMO just go with a 3" exhaust and be done. Boostin these cars gets addicting and what if you get another dd and decide to up the boost even more.
#10
#11
Make sure to use a synthetic oil seeing that boost'd cars break down the oil faster than N/A cars. Personally I use Mobil 1 10w-30 but thats just my preference. I also change the oil a little more frequent cause i go to the drag strip once a month from spring to fall (April-September)....usually I change it at 2,500 miles rather than 3k.
#13
3 inch exhaust work great. I'm running a PTuning 3 inch exhaust and it will be the last exhaust I will ever need. Anything after that would be just a dump to the atmosphere like Rado...lol.
#14
difference is about 20whp on lower boost levels. Switching turbine housings won't do much more than shift powerband a few hundred rpm.
#15
Make sure to use a synthetic oil seeing that boost'd cars break down the oil faster than N/A cars. Personally I use Mobil 1 10w-30 but thats just my preference. I also change the oil a little more frequent cause i go to the drag strip once a month from spring to fall (April-September)....usually I change it at 2,500 miles rather than 3k.
#16
Not sure about that type of oil but my kit has 30k on it using Mobil 1 synthetic so its proven to work because my kit still runs great and I don't burn a lot of oil.
#17
I had a 2.5 inch down pipe for a while moved to 3inch and noticed a faster spooltime and I could just tell the turbo breathed alot better. You might as well go 3inch dp with a electric dump if your going that route or just do a full 3inch exhaust.
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