[email protected] 0 Report post Posted March 7, 2009 Right, I have my E34 540i with its factory system. A great factory system, keeps it nice and quiet, though I want it to actually sound like a V8... As far as I know these older exhaust systems don't mind being tampered with - from memory the later 90's E39's and E38 have those qwerky tuned systems which if removed or replaced with other gear can cause them to actually loose power. For mine I was thinking of a full header back system Remove the cats, mid mufflers and rear... Replacing it with 2.25" tube, an X pipe as close to the headers as possible, leading down on the left side to a dual inlet/outlet Remus muffler or something of that high quality type - what other decent compact chambered mufflers are out there available here in NZ that would fit into the exhaust cavity on the E34's? Any recommendations would be good - as to what you have done on your V8 BMW's etc. Mike. Quote Share this post Link to post Share on other sites
BM WORLD 1283 Report post Posted March 8, 2009 (edited) have system i just pulled out with the cats cut out already . also have a nz new system which doesn't have the cats just small mufflers . you can just bolt the front section in if you want . or just rip your system out and replace with something louder . 021433600 if you wan to have a look at it. Edited March 8, 2009 by Brent HARTGE535i Quote Share this post Link to post Share on other sites
kiwi535 538 Report post Posted March 12, 2009 There are no issues with modding exhausts on these engines unless you get it wrong.classic! Quote Share this post Link to post Share on other sites
entscheidend 0 Report post Posted March 16, 2009 (edited) Im not sure of a E34 exhaust setup (does it have a middle and a rear silencer?) If you have a small budget -rip out the silencers and replace with a straigt pipe - it does sound good and you dont get to much drone inside. It costs nothning if you know a welder / muffler shop and you will get the V8 sound. Or, you could put a aftermarket silencer on it. These exhaust are good to replace the stock one (without inbuilt resonators) 1. Aero Turbine (cheapest) 2. Magnaflow 3. Bora 4. Eisenmann 5. Remus (expensive - but the best) None of these (depending on your fitment etc) dont sound too raspy etc, and doesnt sound like a Mustang, Camaro - its just right Start with your exhaust first, if still not happy then look at different Cats, resonators etc? I know with E39s if you muck about with the OE cats it plays up with the DME, O2 sensors an is a pain in the ass. It should increase HP for some of these exhausts, it lets the exhaust breathe better. Stick it on a Dyno afterwards, you may be surprised. Edited March 16, 2009 by entscheidend Quote Share this post Link to post Share on other sites
