Flex Pipe on the Downpipe
11-23-2009, 12:17 PM
#1
Senior Member
Thread Starter
Flex Pipe on the Downpipe
OK so i am working with a company thats aking a new DP thats coming out. 3 in catless as it should be.
But they decided to not put a flex pipe in there. Just straight flange then pipe.
Iasked why they did this and they said flex pipe makes you lose HP. but now im curious because I dont want to crack welds or Bolts because I know the motor moves.
Discuss?
But they decided to not put a flex pipe in there. Just straight flange then pipe.
Iasked why they did this and they said flex pipe makes you lose HP. but now im curious because I dont want to crack welds or Bolts because I know the motor moves.
Discuss?
11-23-2009, 12:27 PM
#5
Senior Member
Thread Starter
lol yeah luckily they are making their DP just like my Catless DP (3 in catless DP WITH flex pipe)
and Ill switch it out so I can run their 3In Exhaust with my DP.
and Ill switch it out so I can run their 3In Exhaust with my DP.
11-23-2009, 12:43 PM
#6
Senior Member
If you've ever fabricated many exhaust parts, you know why the flex is there. Keeps everything from rattling & reduces the possibility of cracking and metal fatigue in general. Even with solid mounts a motor rocks back/forth quite a bit during hard pulls. For a street duty car I'd be hard pressed not to use one.
A GOOD QUALITY flex isn't cheap, so there are financial reasons why a shop might not opt to use one. The performance angle of it would be really minimal if hardly measurable.
A GOOD QUALITY flex isn't cheap, so there are financial reasons why a shop might not opt to use one. The performance angle of it would be really minimal if hardly measurable.
11-23-2009, 01:39 PM
#9
If you've ever fabricated many exhaust parts, you know why the flex is there. Keeps everything from rattling & reduces the possibility of cracking and metal fatigue in general. Even with solid mounts a motor rocks back/forth quite a bit during hard pulls. For a street duty car I'd be hard pressed not to use one.
A GOOD QUALITY flex isn't cheap, so there are financial reasons why a shop might not opt to use one. The performance angle of it would be really minimal if hardly measurable.
A GOOD QUALITY flex isn't cheap, so there are financial reasons why a shop might not opt to use one. The performance angle of it would be really minimal if hardly measurable.
You should really have a flex as stated here, they are not cheap, but well worth it. It should be a good flex also, otherwise the flex itself will fail.
Mounts will help, but will not be enough to remove/forget about having a flex.
A company should not cheap out to have a better apealing price and not put a flex in, they (the company) will most likely have many product failures.
Last edited by TurboTechRacing; 11-23-2009 at 01:41 PM. Reason: Automerged Doublepost
11-24-2009, 06:58 AM
#12
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i find it hard to believe a reputable large company would need to have any advice on whether or not to use a flex pipe.. i'm not saying i don't believe this is what they've told you, i'm saying what most other ppl here have said, it's not right. a good company would be more interested in doing things correct..
11-24-2009, 07:05 AM
#13
i find it hard to believe a reputable large company would need to have any advice on whether or not to use a flex pipe.. I'm not saying i don't believe this is what they've told you, i'm saying what most other ppl here have said, it's not right. A good company would be more interested in doing things correct..
11-24-2009, 12:11 PM
#14
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Moving the flex piece I would be a fan of. I never liked how the Flex was RIGHT at the turbo. Altho it seems to work well, just something that rubbed me wrong from day 1 honestly.
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