[Cali*335i]

Has anyone purchased the afe downpipes for n54 engine quality what would anyone suggest for downpipes, fmic and chargepipe/bov looking for quality parts and the best power gains. Just bought my 335i less then a month ago and completely new to this platform. Please suggestions

[James@JGMODS]

1. Do you have a tune?
2. Without a tune, any performance parts added. You will not get the full HP out of it.

Congrats on your car. You're pretty local to me. Hope to see you at a meet sometimes. If you have any questions you can email or pm me.

Phong

[Cali*335i]

Lol what's up phong it's Marc bro...I wanted some suggestions on what other people may have used...I was looking at the list you gave me I found alot on the classifieds for a good price...I saw the afe downpipes it said 3" but like jay said idk if these are full 3" inch from end to end

[135Pats]

FWIW you don't see many AFE downpipes around these parts…I have no experience with them, but I'd stick to the brands that have an established reputation. AR, CPE, MS or the cheaper but quality offerings from BMS and VRSF. Or you can go Supersprint or Akra if you hate your bank account! As was said above, without a tune there's no point IMO. FBO cars without a tune make like 300whp or so, you're missing out on another 70+ whp.

[Tiago@VRSF]

It's not possible to make 3" DP's from end to end due to the mid pipes being 2.5" but there's a few brands that keep the 3" design up until the mid-pipe flange where they inevitably neck down to 2.5".

Our new downpipes utilize a 3" cast mouth, 304 grade stainless steel design and a lifetime guarantee against defects & rattle free fitment, all for well under $400. Feel free to hit me up if you have any questions!

[Cali*335i]

Originally Posted by Tiago@VRSF

It's not possible to make 3" DP's from end to end due to the mid pipes being 2.5" but there's a few brands that keep the 3" design up until the mid-pipe flange where they inevitably neck down to 2.5".

Our new downpipes utilize a 3" cast mouth, 304 grade stainless steel design and a lifetime guarantee against defects & rattle free fitment, all for well under $400. Feel free to hit me up if you have any questions!

Cool thanks for the info guys when can I purchase these downpipes

[Cali*335i]

Originally Posted by Tiago@VRSF

It's not possible to make 3" DP's from end to end due to the mid pipes being 2.5" but there's a few brands that keep the 3" design up until the mid-pipe flange where they inevitably neck down to 2.5".

Our new downpipes utilize a 3" cast mouth, 304 grade stainless steel design and a lifetime guarantee against defects & rattle free fitment, all for well under $400. Feel free to hit me up if you have any questions!

Okay do might be a noob question but it will fit on the e92 n54 engine correct the price is amazing for those downpipes I hear great review

[Jeff@TopGearSolutions]

Originally Posted by Cali*335i

Cool thanks for the info guys when can I purchase these downpipes

Originally Posted by Cali*335i

Okay do might be a noob question but it will fit on the e92 n54 engine correct the price is amazing for those downpipes I hear great review

They are already available for purchase.

They fit all N54 vehicles. There are also N54 downpipes available for Xi.

[Cali*335i]

Originally Posted by Jeff@TopGearSolutions

They are already available for purchase.

They fit all N54 vehicles. There are also N54 downpipes available for Xi.

Thanks for the info

[PiSCaRGoT]

I hope this doesn't constitute to a hi-jack of thread, as I think the info might benefit the OP as well :

Does a 3" tapering down to 2.5" DP (like AR Design) have a performance gain over a full 2.5" DP? Assuming both DPs are catless, and the car is FBO with tune.

[135Pats]

Originally Posted by PiSCaRGoT

I hope this doesn't constitute to a hi-jack of thread, as I think the info might benefit the OP as well :

Does a 3" tapering down to 2.5" DP (like AR Design) have a performance gain over a full 2.5" DP? Assuming both DPs are catless, and the car is FBO with tune.

The myth that 3" downpipes make more power than 2.5" downpipes was based on a single set of dynos done on different days using a load based flash tune which happened to target a little more boost the day they were tested with the 3" installed. Thus people assumed the 3" downpipes made 10whp more than the 2.5" downpipes. I wish it were true. -Terrys comments from the other site fwiw

[Jeff@TopGearSolutions]

Originally Posted by 135Pats

The myth that 3" downpipes make more power than 2.5" downpipes was based on a single set of dynos done on different days using a load based flash tune which happened to target a little more boost the day they were tested with the 3" installed. Thus people assumed the 3" downpipes made 10whp more than the 2.5" downpipes. I wish it were true. -Terrys comments from the other site fwiw

I agree. It's negligible.

[PiSCaRGoT]

Great, exactly my thoughts!

Thanks guys, lovin' the quick responses in this forum!