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  1. #1
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    Undercover Full Exhaust

    This is our full STRAIGHT PIPE VERSION. We will be offering a non-res and res-muffler style as well. However you can barely tell that the stock exhaust has been taken off at cruising speeds. Pricing to be announced as soon as cost analysis is complete.
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    I probably run as much boost as you do fuel pressure

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    And some moreClick here to enlarge
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    I probably run as much boost as you do fuel pressure

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    Good welds and looks like some thick piping.

    Need pricing, sound clip, and dyno. I understand this is all in process just saying.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    sound clips

    These of course are used with the absolute highest quality, food grade stainless. Purge tig welded. For those of you that aren't familiar with the term, it means that the inside is as pretty as the outside. Zero slag due to this process.







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    I probably run as much boost as you do fuel pressure

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    Sounds pretty good and those tips are nice and agressive.

    You had it on the dyno right so what was the before/after?

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    bump

    great deals going on now!

    contact us for pricing

    undercovertuning@me.com
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    I probably run as much boost as you do fuel pressure

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    Wow very nice. Straight pipes are the way to go on these, they're so quiet inside that it doesn't seem to matter. So much power to be had and weight to be lost. Very nice welds, also those tips are great...always thought the RPI tips were too small. This is perfect. Any dyno numbers? Also, I'm guessing stock DPs in all those videos?

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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    Any dyno numbers?
    I haven't seen any yet.

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    Wow very nice. Straight pipes are the way to go on these, they're so quiet inside that it doesn't seem to matter. So much power to be had and weight to be lost. Very nice welds, also those tips are great...always thought the RPI tips were too small. This is perfect. Any dyno numbers? Also, I'm guessing stock DPs in all those videos?
    undercover custom 3" downpipes....i am probably the only one right now with a full 3" exhaust. Most dps will taper to fit in to the oem connecting section where dp's connect to the rest of the exhaust. undercover removed the stock part that makes everyone go smaller so we don't have any bottleneck in the flow. The car get soo much attention just from the exhaust and people alway ask me if i have a diesel because of all the turbo noise.
    F10 M5 : ??????
    E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires, Stock Interior,DSC on

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    Looks great sounds great. The way a F10 M5 should sound.

    Funny how a straight pipe exhaust on a F10 sounds almost normal. A straight pipe exhaust on a E9x M3 would be unbearably loud.

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    Click here to enlarge Originally Posted by akh23456 Click here to enlarge
    undercover custom 3" downpipes....i am probably the only one right now with a full 3" exhaust. Most dps will taper to fit in to the oem connecting section where dp's connect to the rest of the exhaust. undercover removed the stock part that makes everyone go smaller so we don't have any bottleneck in the flow. The car get soo much attention just from the exhaust and people alway ask me if i have a diesel because of all the turbo noise.
    No graphs man?

    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale
    : http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    No graphs man?
    soon i was busy with wedding stuff before now that is over got more time on my hand to finally go dyno.
    F10 M5 : ??????
    E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires, Stock Interior,DSC on

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    Click here to enlarge Originally Posted by akh23456 Click here to enlarge
    undercover custom 3" downpipes....i am probably the only one right now with a full 3" exhaust. Most dps will taper to fit in to the oem connecting section where dp's connect to the rest of the exhaust. undercover removed the stock part that makes everyone go smaller so we don't have any bottleneck in the flow. The car get soo much attention just from the exhaust and people alway ask me if i have a diesel because of all the turbo noise.
    That's awesome, Would love to see some dyno numbers for this setup, I bet it gains quite a bit with full 3" pipping.

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    Click here to enlarge Originally Posted by BlackJetE90OC Click here to enlarge
    Looks great sounds great. The way a F10 M5 should sound.

    Funny how a straight pipe exhaust on a F10 sounds almost normal. A straight pipe exhaust on a E9x M3 would be unbearably loud.
    A straight-pipped M5 is pretty damn loud, not from the inside due to sound insulation but they scream from the outside. There is no way it would be acceptable from the factory, but it's definitely the best way to go.

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    Still sounds like a UFO lol MUCH better than stock though. I just don't get how it doesn't sound like a V8 at all has a totally diff sound

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    Sounds really good. Click here to enlarge

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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    A straight-pipped M5 is pretty damn loud, not from the inside due to sound insulation but they scream from the outside. There is no way it would be acceptable from the factory, but it's definitely the best way to go.
    Yeah I have heard one in person. It is loud, but not anywhere near a couple straight pipe E9x M3's I have heard.

    Straight pipe is the only way to go on the F10 M5. A simple muffler delete still doesn't make it that loud.

  18. #18
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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    A straight-pipped M5 is pretty damn loud, not from the inside due to sound insulation but they scream from the outside. There is no way it would be acceptable from the factory, but it's definitely the best way to go.
    i have to say its really loud when you get on it but when you want to be quiet somewhat it does it well....I'll make a go pro video this weekend.

    Click here to enlarge Originally Posted by Kosorio Click here to enlarge
    Sounds really good. Click here to enlarge
    thanks

    Click here to enlarge Originally Posted by ezec63 Click here to enlarge
    Still sounds like a UFO lol MUCH better than stock though. I just don't get how it doesn't sound like a V8 at all has a totally diff sound
    lol i agree that it doesn't sounds like a typical v8.

    Click here to enlarge Originally Posted by BlackJetE90OC Click here to enlarge
    Yeah I have heard one in person. It is loud, but not anywhere near a couple straight pipe E9x M3's I have heard.

    Straight pipe is the only way to go on the F10 M5. A simple muffler delete still doesn't make it that loud.
    i agree muffler delete not to loud when you do the Dps and everything else that changes up the way the car sounds.
    F10 M5 : ??????
    E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires, Stock Interior,DSC on

  19. #19
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    1 out of 1 members liked this post. Yes Reputation No
    some videos



    F10 M5 : ??????
    E90 M3: 11.2 126.7 with a 1.8 60ft Street Tires, Stock Interior,DSC on

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