I've been thinking of upgrading my exhaust. It is currently stock and with Beta 4.4, I can see 1400 WOT pretty quick.
I don't think that I'll see over 550hp anytime soon, so I'll probably get a 4" system. The stock system is 3.5" from the turbo to the muffler.
My question is, if I leave the 3.5" elbow on the turbo, will it still cool down my EGT's enough or should I really try to replace the elbow as well and get the true 4" through out?

 

I did not change mine at first..., ended up doing it later, but not only because of egt's. I needed my 62 to spool sooner, it definitely helped.

You may be able to find a 4" downpipe that attatches directly to the turbo, and do away with the cast elbow all together. I could not locate one when I did mine.

I do not believe you will see much of a drop in egt's by a 4" alone.

 

I have the 5" system, but I wouldn't do it again, just get a 4" magnaflow muffler or strait pipe it if you like LOUD. Put the money toward a turbo instead. I also don't see an air intake in your sig??? They help too.

 

hi

you can mount 04.5 elbow with downpipe.

i have around 1000 with silver 62 smarty on #9 and x2 on 4

chris

 

How much is it to get the elbow for the 04.5-07?

Anyone have part #s?

Thanks

 

hi

i have found the elbow used.
elbow 5161570AA
pipe 4" 52121600AA
clamp 4" 52121285AA

chris

 

Got those parts on yet chris?

 

Do you need all three pieces? Is the pipe the stock down pipe?

If your going to an after market exhaust then just order the 04.5 exhaust, correct? Need the pipe with the exhaust kit?

 

Actually, I want to try to keep it on the quiet side if possible. I thought about doing just the muffler but I didn't think that would do it enough.
I modded my airbox by cutting the bottom out and mounting a PVC elbow. I would like to do an intake in the future when funds allow but my muffler has seen better days and I figured that would be a good place to start.

 

The only kit that I have found that is made for 04.5 or later turbo back is MBRP and that comes in 5". Everything else that I see is cat back.

 

Did you notice much of a decrease in temps when you did the elbow?
Did you have the 5" MBRP before you swapped out the elbow? If not, what exhaust did you have before?

 

I have found an elbow used as well. Where did you get the pipe and clamps from? I searched the part #'s online. Nothing came up for the clamps. The pipe said it came w/emission tracking. What does that mean? Will I also need a cat delete pipe and also an extension pipe?

 

My California emmisions SO had the muffler and CAT on it.

I went with a MBRP kit from Larry here. I ordered the aluminized kit, painted it black and put on a nice 5" tip. EGT's have went down, the sound is absolutley amazing and the price was hard to beat.

I realy don't think anyone sells a muffler delete in a 3.5" pipe, I could be wrong though. I also heard that banks sells a 4" downpipe?

 

i have the numbers here from forum.

 

That is what I have been thinking of doing, at the very least.

I assume you still have the stock elbow? What kind of reduction in EGT's have you seen? How is the sound inside the cab at highway speed?