Turbo Exhaust Flex Pipe - Toyota Nation Forum : Toyota Car and Truck Forums

akn112 · 05-02-2008, 09:10 AM

I have a flex pipe coming out of my exhaust with a hole now. Took it to the mechanic and he said he wasnt sure why it was a flex and recommended i change it to a solid pipe. I was reading around though and found that it might be more desireable to have a flex pipe there so nothing "rips apart". Just kinda getting mixed feelings, does anyone have recommendations? Thanks!!

Jeeves · 05-03-2008, 12:53 AM

Quote:

Originally Posted by akn112

I have a flex pipe coming out of my exhaust with a hole now. Took it to the mechanic and he said he wasnt sure why it was a flex and recommended i change it to a solid pipe. I was reading around though and found that it might be more desireable to have a flex pipe there so nothing "rips apart". Just kinda getting mixed feelings, does anyone have recommendations? Thanks!!

Flex sections are better for preventing damage to the turbo/manifold from the exhaust jarring around (stresses), solid pipe are better for flow and durability. They've each got their handoffs.

willtotheumm · 05-03-2008, 02:15 AM

I forget, do you have exhaust Jeeves? This makes me wonder about which one would be better too.

***bgrieger*** · 05-03-2008, 08:49 AM

I like having them, but if you're typically careful not to catch the muffler backing up to parking curbs, you should be fine without it.

Jeeves · 05-03-2008, 03:48 PM

@Will, Yeah. I've got a 3" V-Band to the turbo, all the way back to a Greddy SP cat-back. No flex section in my exhaust.

willtotheumm · 05-03-2008, 06:50 PM

@bgrieger: ah. Yeah luckily i'm a good parker hah. I can't imagine how much it would suck to back into something, shift the whole exhaust and then crack some piping up at the turbo. bah! that would suck balls.

@Jeeves: ah alright cool. So how much would a flexpipe mess up the flow of your exhaust?

Jeeves · 05-04-2008, 01:15 PM

I don't really know. While I've got access to flow calculation software there's a lot of variables and unknowns. I don't know flow on the hot side, I don't know turbulence, etc. It's just easy enough to not have one.

willtotheumm · 05-04-2008, 06:26 PM

Quote:

Originally Posted by Jeeves

I don't really know. While I've got access to flow calculation software there's a lot of variables and unknowns. I don't know flow on the hot side, I don't know turbulence, etc. It's just easy enough to not have one.

thats some crazy software. I know how to use a calculator! hahah. Ah... yeah i'm still looking at the HKS Super Dragger exhaust