4" turboback?
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Freshman User
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4" turboback?
I am about to purchase a pipe and was looking at the connections and everything else today while wrestling that transmission when I noticed that on the left side of the motor (looking from the front of the truck) that the header pipe goes into the down pipe. Now, looking at pictures of the downpipes on youtube etc. It doesn't look like aftermarket pipes have that connection? COuld somebody give me some info on this to help me out????? TLDR: looks like exhaust is connected to the downpipe and aftermarket pipes don't look like they have that little intersection.
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Freshman User
Joined: Mar 2015
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I will be down there tomorrow, also another question I have is will I have to cut the firewall to install the downpipe????
Fleet Owner
Joined: May 2009
Posts: 21,437
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From: Gilbert, PA
There are pipes that run from each manifold up to a collector at the back of the turbo(Up-pipes).
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Thread Starter
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Freshman User
Joined: Mar 2015
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There are pipes that run from each manifold up to a collector at the back of the turbo(Up-pipes).
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Thread Starter
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Freshman User
Joined: Mar 2015
Posts: 43
Likes: 0
There are pipes that run from each manifold up to a collector at the back of the turbo(Up-pipes).
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Then the down pipe exits the turbo and runs down the back of the engine.
They do NOT connect to each other.
And YES, you need to cut/modify your firewall to fit the new down pipe. I hope you only got a 3" DP or you will cutting and modifying a LOT
Ok, I looked up under there and they don't connect they just come really close and made me think they connected.
Senior User
Joined: Mar 2015
Posts: 326
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From: North Carolina-Foothills
Not intending to hijack your thread but....
I am considering either diamond eye 5in turbo back or 4in turbo back...anyone think the 5 is worth the cost?
And while I am at it...anyone have experience with the AFe turbo back System, they look nice wondering if they are worth the extra money.
Sorry for the crazy caps above..phone is acting crazy.
I am considering either diamond eye 5in turbo back or 4in turbo back...anyone think the 5 is worth the cost?
And while I am at it...anyone have experience with the AFe turbo back System, they look nice wondering if they are worth the extra money.
Sorry for the crazy caps above..phone is acting crazy.
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Mountain Pass
Joined: May 2014
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From: Texas
Also, I was told by someone a lot smarter than me that a 4 inch is sufficient for most daily driver/street trucks. I've had no problems with my 4 inch.
Senior User
Joined: Mar 2015
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From: North Carolina-Foothills
Sound is important to me, but performance and reduced egt is most important....
I know a lot of folks on here have the diamond eye...would like to hear from someone with the aFe setup
I know a lot of folks on here have the diamond eye...would like to hear from someone with the aFe setup
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Freshman User
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Not froml a creditable source, but I heard the 5" caused more egts which is the reason I went ahead and got the 4" because I don't really need the extra sound. Gotta keep this as a daily.....
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Freshman User
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I didn't know at the time, and I am kinda new to the whole diesel performance deal, so I just went ahead and got a 4". Seemed like a good compromise because the truck is already somewhat loud with the stock exhaust I just want to hear the turbo and let it breath some more.