BMW 135i Exhaust Prototype by HPF

[BMW86]

Sounds alright, I would like to see the completed version with quad tips. Interesting routing of the midpipes and it appears that have used a resonator. I expected the car to sound a lot louder too with catless downpipes. I would like to hear more sound clips preferably in the dry and more in-cabin clips of drone if there is any between 2000rpm-2800rpm in higher gears where it typically occurs in our 135i. I don't see the point of revving the car out to 3500rpm+ because we never cruise at these speeds.

[mineo77]

Originally Posted by BMW86

Sounds alright, I would like to see the completed version with quad tips. Interesting routing of the midpipes and it appears that have used a resonator. I expected the car to sound a lot louder too with catless downpipes. I would like to hear more sound clips preferably in the dry and more in-cabin clips of drone if there is any between 2000rpm-2800rpm in higher gears where it typically occurs in our 135i. I don't see the point of revving the car out to 3500rpm+ because we never cruise at these speeds.

V

thats not a resonator, it is the flex section. I will leave explanation to Chris. Going over to HPF tomorrow and will grab more info for you guys

[HPF Chris]

Originally Posted by BMW86

Sounds alright, I would like to see the completed version with quad tips. Interesting routing of the midpipes and it appears that have used a resonator. I expected the car to sound a lot louder too with catless downpipes. I would like to hear more sound clips preferably in the dry and more in-cabin clips of drone if there is any between 2000rpm-2800rpm in higher gears where it typically occurs in our 135i. I don't see the point of revving the car out to 3500rpm+ because we never cruise at these speeds.

Here you go

Here's a new video of the car doing a drive by (it will be live shortly)

[driftdriven]

Can't wait to see the dual outlet setup!

[BMW86]

Originally Posted by HPF Chris

Here you go

Here's a new video of the car doing a drive by (it will be live shortly)

Sweet. Any plans to make some videos of the car cruising between 2000rpm-2800rpm? Maddad has made some comprehensive videos of their exhausts showing practically zero drone in the higher gears which has helped win a lot of people over. I can't see how a fully catless, resonator-less and muffler-less exhaust would be completely drone free It does sound pretty sweet during WOT though.

[Makkasteez]

how long until i can purchase one of these? and will the tips be compatible with the stock diffuser? or will it be dual like the 335?

[mineo77]

Production is likely 4-5 weeks away buy would defer to Chris at HPF.

The single outlet dual tips uses the stock diffuser, the double outlet quad tips will require a diffuser

[Makkasteez]

Originally Posted by mineo77

Production is likely 4-5 weeks away buy would defer to Chris at HPF.

The single outlet dual tips uses the stock diffuser, the double outlet quad tips will require a diffuser

ok cool.
Thanks!

[BSM 135i]

sounds really good but i was hoping something with a muffler from HPF, getting a little tired of these muffler delete systems. yeah i know i have the aFe but i'm pretty tired of it and want something new...

def. looks good though! and i like those Ti tips but i suggest you look into offering black tips also HPF can't wait to see what the quad setup looks like..

[HondaGoneRogue]

Car looks and sounds good. Now I get the quad vs dual poll lol. I don't really dig Ti tips on our cars, but a full Ti exhaust would be awesome.

[oman135]

Originally Posted by HPF Chris

Here you go

Here's a new video of the car doing a drive by (it will be live shortly)

this car has downpipes?

[oman135]

will the exhaust fit the N55 ?

[mineo77]

Originally Posted by oman135

this car has downpipes?

running Macht Schnell catless DP's

[escobar929]

sounds pretty good, would love to hear some clips w/ stock downpipes but im sure in time there will be some.

I am a lil concerned w/ the tips, they didnt look very aggressive or nice looking IMO, hopefully some pics will prove me wrong

[HPF Chris]

Here's what the dual exhaust tip will look like....

[infinitekidM2C]

if those were black with the colored logo..that'd be nice.

[escobar929]

Originally Posted by infinitekid2002

if those were black with the colored logo..that'd be nice.

skip the cheesy played out Ti tips and do THIS!

[escobar929]

Chris, any info on the diameter of each tip? thanks for the pic!

[JD75]

"if those were black with the colored logo..that'd be nice."
__________________
Yep, without a doubt, that would be cool.

I am very much liking the design of the tip, it would look very tough in "black".

[mineo77]

they may offer in black, but at the moment it is the 2 versions of the Ti tips

[black e]

there's no way this exhaust doesn't drone....

[Sal@AUTOcouture]

Whoa, that sounds awesome!