den9
Veteran Member
i want to do an exhaust on my jetta but im not sure what to get. whats the stock pipe diameter and should i do a full pipe from the cat back or just take the muffler off and add a tip?
What about the flex pipe section?Whitbread said:Just run straight pipe from the turbo back,
The fact that the "gas comes out so fast" is an indication that your exhaust could be less restrictive. If you made your exhaust tip 1 inch in diameter it would come out much faster yet (and probably make your boost higher).devonutopia said:........I know the gas comes so fast out the back of mine, that I very rarely have problems with soot accumulation on the bootlid/bumper.
Back pressure on a turbo car? The less back pressure the better....den9 said:i was thinkin a straight pipe all the way through wouldnt be enought back pressure. depending on the price ill get a straight pipe all the way back with a borla race muffler. unless someone can provide a sound clip of a straight pipe, besides that 4 inch one i seen earlier.
oh yeah what should i get 3 inch or 2.5 inch, i was thinkin 2.5 straight pipe or a 3 inch with a muffler
the original dimention is 2". i made the modification to full 2.5" stait pipe and its really cool.... i made the mod. from the starting flenge down to the end. you can hear the spoiling of the turbo and it give you a small 2-3 hp more.den9 said:i want to do an exhaust on my jetta but im not sure what to get. whats the stock pipe diameter and should i do a full pipe from the cat back or just take the muffler off and add a tip?
is it for the tdi? i never seen any good performance parts for diesels except injectors and chipsmkosem said:I know GHL makes a side exit exhaust, and a TDI downpipe. There's bound to be someone running it
--Matt
Check for exhaust leaks.I just did a 2.25" pipe after the flex pipe out the side. The turbo can be heard at idle and it sounds very good but it sounds horrible when I get on the throttle, the turbo doesn't whistle it screeches, especially when cruising at highway speeds....could this indicate a bad turbo or will a 3" downpipe removing the flex pipe fix this?
I have a turbo back straight pipe using as much of the stock pipe as possible. I do not have any weird noises. Mine has a different turbo than yours, but it should be nice and quiet even on the throttle. The turbo should be making whistle and whooshing noises not "screeching".I just did a 2.25" pipe after the flex pipe out the side. The turbo can be heard at idle and it sounds very good but it sounds horrible when I get on the throttle, the turbo doesn't whistle it screeches, especially when cruising at highway speeds....could this indicate a bad turbo or will a 3" downpipe removing the flex pipe fix this?
Check your VNT vanes for proper operation and check the gasket on the downpipe to turbo connection - that thing will sound horrible if it gets to vibrating. Picture below is not exactly like yours, but you'll get the idea...I just did a 2.25" pipe after the flex pipe out the side. The turbo can be heard at idle and it sounds very good but it sounds horrible when I get on the throttle, the turbo doesn't whistle it screeches, especially when cruising at highway speeds....could this indicate a bad turbo or will a 3" downpipe removing the flex pipe fix this?