Official Straight Pipe/Muffler Delete Fact Thread. - Page 39 - BMW M5 Forum and M6 Forums

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Old 29th October 2011, 17:54   #381
mj71
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Just had mine done yesterday. Love it! I do want to add that there is a good amount of cabin noise/drone while accelerating at anything other than super light throttle application. That includes going up hills when a bit more gas is needed. I don't mind it a bit and there certainly is no drone at cruise, just don't expect it to be perfect during all driving conditions. YMMV.
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Old 29th October 2011, 18:10   #382
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Quote:
Originally Posted by mj71 View Post
Just had mine done yesterday. Love it! I do want to add that there is a good amount of cabin noise/drone while accelerating at anything other than super light throttle application. That includes going up hills when a bit more gas is needed. I don't mind it a bit and there certainly is no drone at cruise, just don't expect it to be perfect during all driving conditions. YMMV.

I am experiencing the same thing - Inside cabin noise in first two gears where accelerating normally off the light THAT SAID, Lets all remember that it would be the same with ANY cat back exhaust and you would have paid an extra $1000- I was going to get under the car and make sure there isn't a leak because that initial/low speed noise seems to be from under the rear seats - and I dont have rear seat access
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Old 29th October 2011, 19:58   #383
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I had this done a while ago and i have to say i'm very pleased with the look and sound. I went for the 3" not staggerd tips.

Here are a few pictures.

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Old 29th October 2011, 21:20   #384
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Here are my cold start videos after the muffler delete.

I posted them in my other thread but posting here in case someone searches and finds this thread in teh futre, so they can have all the pics, videos and information in this one thread

+ YouTube Video
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Old 30th October 2011, 02:17   #385
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for those that have done the delete, what did you do with your mufflers? I ask because mine are just taking up space in my garage.

i honestly dont think i'll go back to oem mufflers. even if my pipes rust or break, i'll just have it redone since im keeping the car until the engine explodes.....even if that happens ill still fix that, hehe.
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Old 30th October 2011, 02:47   #386
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for those that have done the delete, what did you do with your mufflers? I ask because mine are just taking up space in my garage.

i honestly dont think i'll go back to oem mufflers. even if my pipes rust or break, i'll just have it redone since im keeping the car until the engine explodes.....even if that happens ill still fix that, hehe.

I am keeping the stock mufflers in case i ever sell the car later and/or want to go back to stock

For now, contrary to my initial hesitation, I am LOVING muffler delete. It is growing on me every minute I drive the car.
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Old 30th October 2011, 06:20   #387
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Quote:
Originally Posted by desmotesta View Post
I am keeping the stock mufflers in case i ever sell the car later and/or want to go back to stock

For now, contrary to my initial hesitation, I am LOVING muffler delete. It is growing on me every minute I drive the car.
I figured you would get used to it. I get asked pretty frequently what kind of exhaust do I have. They are shocked when I tell em.
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Old 30th October 2011, 11:24   #388
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Quote:
Originally Posted by desmotesta View Post
I am keeping the stock mufflers in case i ever sell the car later and/or want to go back to stock

For now, contrary to my initial hesitation, I am LOVING muffler delete. It is growing on me every minute I drive the car.
Still loving mine good all round

What i did with the stock mufflers was to mount them on the wall of my garage just inase although i will never go back to stock.Did try several times to sell even give away but no interest si i will keep them on wall now looks quite good with the car in there also
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Old 30th October 2011, 15:55   #389
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Quote:
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...For now, contrary to my initial hesitation, I am LOVING muffler delete. It is growing on me every minute I drive the car.
I knew you'd come around
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Old 2nd December 2011, 20:27   #390
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Muffler delete feedback

Hey Guys, I have posted a reply elsewhere but thought this would also be a good place to post my feedback on my muffler delete experience.

Timmays tips arrived on Thursday & were installed on Friday in conjunction with the muffler delete. So, what do I think?

Timmays tips are excellent. They are slightly larger, but not boy racer-ish & all the better for it. Excellent workmanship too. Well worth the money.The Kiwi M5 script looks awesome, but is not so obvious as to look like I am pimping the car.

Onto the muffler delete. T'was quite a job getting everything lined up & but it all came together in the end. Total time was ~2 hrs & only NZ$200. Good value. As to the sound the car now makes, here is my opinion after 2 separate decent drives around town & the motorway:

Up to 2000rpm, it sounds like a cross between a old style Subaru flat four throb & a lumpy V8 but in a good way.
At about 2200-2400, there is a higher pitch crossover note which is semi-drony but only if you sat at those revs.
From about 2500rpm, the V8 sound really starts to come out & sound something like a cross between a NASCAR V8 & the Chevy V8's as you get up into the rpm. Very very addictive.
As described, the exhaust character changes across the whole range, but with the standard mufflers, it is pretty much the same, just different in volume.
At a constant 100km/hr or 2000rpm, the exhaust volume is only mildly louder, but in a nice way & not really noticeable. Just as you pick up speed, you get that higher pitch crossover sound for a moment & then the V8 sound comes through & it is really quite something.

I am looking to take a 200km round trip to this weekend & see if it this new exhaust character grows on me or, if after 200+km, the novelty wears off at which point I will simply put the original mufflers back on.

Last edited by KiwiM5; 2nd December 2011 at 20:31.
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