The Inevitable Down Pipe Question

[tyang82]

It was on the car when I bought it

 

[Poodles]

I understand. I was only concerned because it seems like cracked flex sections are not uncommon on these cars.

If I'm going to drop almost $700 on a new downpipe, I don't want to find another cracked flex section down the road.

Better than a cracked exhaust manifold

 

[IJ.]

Never ever ever ran a Flex pipe on any of my 7M downpipes I made and never had a stripped or damaged Header/manifold/stud.

 

[Poodles]

But I doubt you slapped the downpipe on speed bumps all the time :rofl:

 

[IJ.]

Not hard but I did scrape it often

 

[Turbo Habanero]

I think its all about quality I have a full one piece exhaust from my turbo elbow back and I'd rather have my flex section then not have it

 

[Canuckrz]

If you're going to go balls out I would highly suggest the Raptor Racing DDP, they come ceramic coated, obviously replace the stock elbow unlike the hks, and they have the flex section aswell (which is cheap to replace if it does go, I don't know what sort of dumbass shop would say replacing is illegal).

 

[te72]

Never ever ever ran a Flex pipe on any of my 7M downpipes I made and never had a stripped or damaged Header/manifold/stud.

How difficult (or effective) would it be to make a brace to the shock tower from either the manifold or turbo? Would likely alleviate some of the stress, no? Assuming of course you were on solid mounts, nobody likes torque twist...

If you're going to go balls out I would highly suggest the Raptor Racing DDP, they come ceramic coated, obviously replace the stock elbow unlike the hks, and they have the flex section aswell (which is cheap to replace if it does go, I don't know what sort of dumbass shop would say replacing is illegal).

It's the bold part I'm wondering about here... by design, a DDP would have to replace the stock elbow, would it not? The stock elbow is what causes the disruption in exhaust flow by routing the wastegate air directly into the exhaust stream...

To the OP, I had a BIC DDP on my car, loved every minute of it. Well, all but the fuel cut that it helped bring on anyway.

 

[IJ.]

I think it isn't needed Brad.

 

[Dylan JZ]

Not hard but I did scrape it often

lol same here.. I've never had a flex-section on my Trust DP, and I've bashed some stuff with it in the past. I'm not saying that's good, but it apparently held up :shrug:

 

[Hotwheelsjr]

I have no idea what I have -- it was in the car when I got it. I have a T67 mounted on a T4 stainless header and a 50mm waste gate with no pipe on it...so it exits straight to open environment. Full throttle and all I can hear is the waste gate screaming. LOL! The DP I have has no exit flange -- it is welded to the rest of my exhaust. It has been scraped over a few speed bumps, and I pray every time I have to go over one. So far no sign of breakage other than rubbing off the header wrap I put on it.

 

[Canuckrz]

It's the bold part I'm wondering about here... by design, a DDP would have to replace the stock elbow, would it not? The stock elbow is what causes the disruption in exhaust flow by routing the wastegate air directly into the exhaust stream...

Indeed, I was just comparing to his current hks which is bottlenecked at the stock elbow to the DDP.

 

[57trimMKIII]

Figured I would update you guys - I'll be keeping my BIC DDP instead of buying another.

I'll have a local shop (Serious HP) replace the flex section, then have it coated by PolyDyn