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Thread: Back in a '98 - Aitch's BMW 750iL

  1. #51
    Sponsor Aitch's Avatar
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    Default Re: Back in a '98 - Aitch's BMW 750iL

    Quote Originally Posted by SKYMP3 View Post
    Nice classic BMW.

    Btw, do you miss Ferrand Drive? lololol
    The only thing I miss about Toronto is family and the lack of dust constantly settling on my car. That golden California sun? Its because of dust.

  2. #52
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    Default Re: Back in a '98 - Aitch's BMW 750iL

    As mentioned earlier in this thread, I deleted my rear mufflers last year. The sound was pretty decent - a bit more bass, and a mild roar when accelerating into the upper rev range.


    However there's been lots of buzz (heh) among E38 owners recently about installing an X-pipe in place of the factory resonator (which is itself a sort of x-pipe; the two exhaust pipes are perforated inside of the resonator). I bit the bullet and purchased a stamped X-pipe from Amazon in the stock exhaust diameter; my thinking was that by not going to a larger diameter I'd avoid too much bass in the exhaust. I really wanted the high-end wail of the V12 to come through, without too much booming on the low end.


    Well, I got the wail, but there is some low-end drone/resonance on cold start-ups and while driving at low speeds around 2000 rpms. I put together a bit of video showing me driving around this morning, along with a couple of full-throttle pulls towards the end. (Excuse my squeaky steering wheel clockspring). I think it was partially due to the exhaust dumping underneath the trunk, from where I'd cut off the stock mufflers originally. When the x-pipe was installed I didn't have them extend the piping back to the bumper (didn't think it was necessary at first).





    (Click to 2:05 if you want to hear it from outside the car)


    After recording this video, I went back to the exhaust shop and had them extend the pipes to the back bumper with 30-degree downturns. Didn't want to cut the bumper for exhaust tips as it would tear the vinyl. There is still a bit of a drone/boom around 2000rpms, but it is reduced from before and you can hold a reasonable conversation in the car again. The drone wasn't unbearable before, but it was louder than I wanted.
    Last edited by Aitch; 11-09-2017 at 07:27 PM.

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    SirWanker (11-10-2017)

  4. #53
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    Default Re: Back in a '98 - Aitch's BMW 750iL

    Nice crisp sound, even better now if it's how you want it (less drone)
    2007 MS3 - Cobb AP - Cobb TI - Cobb intake - 3" catless DP - stage1 tune - Autotech hpfp - RX8 rims - weathertech mats -

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