zeitgeist57 Posted April 5, 2012 Report Share Posted April 5, 2012 My Passat had a leaky flexpipe on the pass side exhaust (V6, longitudinalallityally-mounted) which I had replaced. Now, the drivers' side is leaking, and the weld on the pass side developed a hole. :fuuuu: I know the flex pipes absorb engine vibrations to prevent them from being transmitted into the cabin. I'd rather have a little more shake, than reduced power, noise, and CELs from O2 sensors trying to find out where the fkk all the exhaust gases are going. Is it a bad idea to replace flexpipes with straight pipes? Car is a 135k mile '00 Passat stick shift. Next up after the exhaust leak is a full front suspension rebuild using a new set of new control arms. Going to keep this car forever... EDIT: This isn't really a "tech question", more "have you had experience in a car where the flex pipes have been eliminated?" :gabe: Quote Link to comment Share on other sites More sharing options...
thorne Posted April 5, 2012 Report Share Posted April 5, 2012 I've ran both on my subaru. and honestly I had fitmit issues with the non Flex. Buy a good flex replacement and call it a day? Quote Link to comment Share on other sites More sharing options...
macpyro2 Posted April 5, 2012 Report Share Posted April 5, 2012 It is there to eliminate cracking or breaking, its more or less there as another pivot point. If your going to weld in a straight pipe you might as well just weld in another flex pipe. Quote Link to comment Share on other sites More sharing options...
AudiOn19s Posted April 5, 2012 Report Share Posted April 5, 2012 Mad hatter $89 for new flex pipe...take them about 20 minutes to fix the thing too. Just had my 1.8 T A4 flex pipe replaced there yesterday. I'd think straight pipe in it's place would cause more issues than save headaches. I see them as wear items. Just plan on replacing every couple of years. I drag mine across speed bumps with the winter tires on the car and don't expect to get any more than 2 years out one before it needs to be replaced. Quote Link to comment Share on other sites More sharing options...
Rocky31186 Posted April 5, 2012 Report Share Posted April 5, 2012 Yeah don't put strait pipes in. Flex sections need to be left in. Vw are known for the flex going bad. I always replaced them both at the same time when I was at Midas. 120$ for both. But I don't work there anymore. Lol. Quote Link to comment Share on other sites More sharing options...
stangsn95gt Posted April 5, 2012 Report Share Posted April 5, 2012 I heard mad hatter does good work Quote Link to comment Share on other sites More sharing options...
AWW$HEEET Posted April 5, 2012 Report Share Posted April 5, 2012 i had my flexpipes replaced at madhatter, good guys. Quote Link to comment Share on other sites More sharing options...
CRed05 Posted April 5, 2012 Report Share Posted April 5, 2012 I don't have flexpipes anymore, my aftermarket exhaust came with straight pipes. I don't have any issues. Quote Link to comment Share on other sites More sharing options...
Skinner Posted April 5, 2012 Report Share Posted April 5, 2012 I don't have flexpipes anymore, my aftermarket exhaust came with straight pipes. I don't have any issues. yet :gabe: Quote Link to comment Share on other sites More sharing options...
zeitgeist57 Posted April 6, 2012 Author Report Share Posted April 6, 2012 I've got my buddies' Lincoln Electric SP175...after filling some mirror holes on the Ford I wanted to tackle the exhaust next... Quote Link to comment Share on other sites More sharing options...
Cordell Posted April 6, 2012 Report Share Posted April 6, 2012 I've got my buddies' Lincoln Electric SP175...after filling some mirror holes on the Ford I wanted to tackle the exhaust next... Just go easy with light heat, exhaust burns through really easily. I suggest leaving the flex pipe in it as well. Quote Link to comment Share on other sites More sharing options...
zeitgeist57 Posted April 6, 2012 Author Report Share Posted April 6, 2012 I'm going to take out the whole exhaust system. Want to remove the last muffler, and see how she sounds. I'll fix both flex pipes at the same time. Thanks, CR! :thumbup: Quote Link to comment Share on other sites More sharing options...
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