[NKGK20]

Which one produces more power?
Which one is a better mod, yes both are better obviously. I was told down pipes don't do much without a full tune … Just wondering to those that have it what have you found?
Thanks!

[G80SWFL]

Originally Posted by NKGK20

Which one produces more power?
Which one is a better mod, yes both are better obviously. I was told down pipes don't do much without a full tune … Just wondering to those that have it what have you found?
Thanks!

The videos of mid pipe everyone gets about 10 hp believe a catless downpipe no tune will get you 16-20hp probably

[TexasEd]

Catless downpipes are always a performance improvement and especially so when coupled with an after market exhaust. As an example on my Nissan GTR the improvement is 15 to 20 hp. The only downsides are (1) some folks complain of rotten egg smell, (2) to a certain extent you will experience louder exhaust depending upon your exhaust setup, (3) will fail state inspection on those states requiring it. Because of the above factors I went with after market midpipes and exhaust for my GTR. I went with PSI midpipes for my BMW. No catless downpipes for either car. One is able to obtain a passing state inspection sticker but they are obtained in the gray market and $ cost a premium. Too much hassle for me.

[SickGTR]

Originally Posted by NKGK20

Which one produces more power?
Which one is a better mod, yes both are better obviously. I was told down pipes don't do much without a full tune … Just wondering to those that have it what have you found?
Thanks!

DP! Will have better spool also. For me, catless DP/ catted mid. Run E-85 and never worry about smell:-)

[NKGK20]

I plan on getting a midpipe only with dp. No exhaust set up. Valvtronic seems to be what I'm leaning towards.

[G80SWFL]

Originally Posted by NKGK20

I plan on getting a midpipe only with dp. No exhaust set up. Valvtronic seems to be what I'm leaning towards.

Since Black Friday around the corner probably wait to see if valvetronic has a sale

[Avaley]

downpipe by far. It also enables more aggressive stage 2 tuning.

[m20e3087]

Catless DP with catted mid. Planing to have this setup in few weeks or so.

[Soylent]

Originally Posted by m20e3087

Catless DP with catted mid. Planing to have this setup in few weeks or so.

Why catted mid? Stink reduction?

[beachBmmr]

Originally Posted by m20e3087

Catless DP with catted mid. Planing to have this setup in few weeks or so.

Youre still gonna have a CEL

[m20e3087]

Originally Posted by Soylent

Why catted mid? Stink reduction?

Yes smell is one of the reason but mainly it will get really loud for my taste. Now if I was to run high flow catted DPs, than I would go full mid as most of guys are running here.

[m20e3087]

Originally Posted by beachBmmr

Youre still gonna have a CEL

Yeap. Until the tune is released will have to deal with CEL.

[beachBmmr]

Originally Posted by m20e3087

Yeap. Until the tune is released will have to deal with CEL.

Why not do a 400 cpsi gesi race cat.

Im afraid catless will be hollow and tinney

[m20e3087]

Originally Posted by beachBmmr

Why not do a 400 cpsi gesi race cat.

Im afraid catless will be hollow and tinney

If you get a quality pipe from a reputable brand don't have to worry about any issues. When I used to live up north, I ran catted but in FL everyone I know runs cat-less and some even straight pipe all the way. So in my case I will keep the 2nd OE cats and replace both res with straight and X.

[M0J0]

DP, midpipe is for sound. It will give you little to no HP.

[TexasEd]

Originally Posted by m20e3087

Yes smell is one of the reason but mainly it will get really loud for my taste. Now if I was to run high flow catted DPs, than I would go full mid as most of guys are running here.

Exactly, running catless downpipes and non-resonated midpipes in combination will be loud. Also running catless downpipes is not an issue in Florida where where they don't have state inspections. Catless is an issue in Texas with most counties.

[beachBmmr]

Originally Posted by TexasEd

Exactly, running catless downpipes and non-resonated midpipes in combination will be loud. Also running catless downpipes is not an issue in Florida where where they don't have state inspections. Catless is an issue in Texas with most counties.

I had catless dp and stg2 BM3 on my 440 with mppsk. Power was noticeable, but it was hella loud, raspy and the exhaust smell was annoying. Sitting in a drive through would choke the passengers…my wife HATED it.

I have a PSI pipe on order and will do catted dps when I feel like spending another 4k

[mike@x-ph.com]

Why not get both?

[Chicklet]

Originally Posted by M0J0

DP, midpipe is for sound. It will give you little to no HP.

Agreed! I can only speak for myself but I own a F82 as well, got the intakes, downpipes, exhaust etc. Love the sound and the performance, but once I got the G80, I could care less about the sound, just wanted performance on 93 oct. Went piggyback (Dahler Tune) getting 598 whp on dyojet, with everything else on the car bone stock. Unless you're looking to flash tune it to 750+ whp on corn fuel, downpipes and midpipes ain't doing nothing on stage 1 or 2 on this platform except sound.

[kgelfen360]

Originally Posted by Chicklet

Agreed! I can only speak for myself but I own a F82 as well, got the intakes, downpipes, exhaust etc. Love the sound and the performance, but once I got the G80, I could care less about the sound, just wanted performance on 93 oct. Went piggyback (Dahler Tune) getting 598 whp on dyojet, with everything else on the car bone stock. Unless you're looking to flash tune it to 750+ whp on corn fuel, downpipes and midpipes ain't doing nothing on stage 1 or 2 on this platform except sound.

Where did u get Dahler tune? Is it easy to install?

[mike@x-ph.com]

Originally Posted by kgelfen360

Where did u get Dahler tune? Is it easy to install?

It should be one of the easier tunes to install

[Nado]

Originally Posted by Chicklet

Agreed! I can only speak for myself but I own a F82 as well, got the intakes, downpipes, exhaust etc. Love the sound and the performance, but once I got the G80, I could care less about the sound, just wanted performance on 93 oct. Went piggyback (Dahler Tune) getting 598 whp on dyojet, with everything else on the car bone stock. Unless you're looking to flash tune it to 750+ whp on corn fuel, downpipes and midpipes ain't doing nothing on stage 1 or 2 on this platform except sound.

What this man said. DPs will not yield any big gains without a full tune (if any gains at all). This include a piggyback controller. If you want some added sound, start with a valve controller first, then go with a single mid to see if its enough.

If you plan on unlocking and getting a full tune, then grab some DP.