That's a good question on recirculated vs open/dumptube performance wise.Mostly applies to external wastegate setups and if the wastegate routes back into the exhaust or dumps directly out the dumptube, but can also apply to internally wastegated setups as well:The main reason for...

There are some options, which hopefully doesn't make it more confusing but rather be easier match exactly what you're looking for.For a direct bolt on, these O2 housings are exactly that, and will work with your existing downpipe (and all of the common factory/upgraded downpipes). Space is...

No, but from our perspective the reason for a side exit is being able to have a nearly straight path outWe can and is a $200 option. Often folks prefer to just do a downfiring dumptube since there won't be a discernible difference in noise level with an open side exit to begin with, but also...

Absolutely, we've made them before and you are spot on about the alternator being moved to give a direct shot out the bumperPricing for 3" would be the same as the O2 eliminator style, $549, and 3.5" (shown in photos) would be +$100. For a 1g there is usually just enough room to route 3.5"...

Flanges ordered! 3-4 week lead time for them to be cut, so orders won't be able to be started until then.Officially added to the website: http://morrisonfabrications.com/product/mhi-external-o2/ for anyone looking to get an order in ahead of time

We offer an O2 housing specifically for the FP30 housing to go to the factory 2 bolt downpipe flange http://morrisonfabrications.com/product/dsm-fp30-o2-housing/ but it's not feasible to recirculate unfortunately. I mean you could, but there isn't room for a flex bellow just after the wastegate...

Would DSM and any Evo1-3 folks be interested in us offering MHI/FP bolt-on EWG O2 housings? Some nice features here-Tightly executed true 2.5" bend -Exact wastegate placement we've found to clear any configuration (dipstick, 2g/Evo alternator stud, factory Evo radiators, etc) -Can also be...

We haven't done those back to back tests on the DSM stock replacement, no. It would be hard to justify building a manifold without that flow guide vane. The collector is offset/angled a good amount in order to allow a nice bend off the #2 port, and the guide vane provides a nice flow path that...

Sorry for the late reply-Spleen8urLSX made a great point about v-band flange compatibility being specific to each brand vs the T4 flange footprint being shared across brands.We will eventually have a write up that dives into it more than we can at the moment, but for turbos that size, the...

321 with 347 filler definitely took some adapting to. It wasn't as different to weld as we initially expected years ago but definitely requires more attention. It doesn't seem to be as forgiving with any discoloration ahead of the weld puddle (if you did try to weld over any discoloration it...

Hey! That's a great question and we wish we had a really awesome response; however, the only machines we've worked with were in school (Samantha) and they had decent ones to learn on or the one she bought back in 2015/2016 (a used Miller Syncrowave 200 which has been awesome for us and we are...

Proud to be a part of your build!Thank you! Maybe but these cars, the people and community are very near and dear to us :) We know the in's and out's of them pretty well and can apply that to the final product while still continuing to learn a lot from them every dayThank you for the...

Can honestly say we really enjoy every setup and appreciate the nuances of each. Simple T3 setups making 900whp+, modest turbo sizes that have a ton of area under the power curve, bolt on, v-band, all business, at the compressor limit, effortless power at lower boost, just what gets you the most...

Hey fellow members!We recently released a tech article about what a turbo manifold does and took part in a podcast with HP Academy that briefly went over some of it, too.We had been thinking about doing an Ask Us Anything (in relation to our work) and right now seems like the perfect time...

I was recently asked this question and completely botched the answer- making it seem like they do nothing. So now is a good time to share what we’ve learned so far.We have both a short answer and a long answer to this question. There are more factors and details involved but this aspect...

S372 divided T4 top mount with 3.5" side exit hot parts

DSM large frame divided T4. 3.5" hot parts all tacked up and samantha’s GTX4202R on just because :)

Consolidated divided T4 with 3.5" hot parts under the pan for a killer Xona setup at rx4speed!

DSM Divided T4

Thank you! The first 3 photos in post #7 are a one off T3, but we do also make a T3 using a similar placement and layout as our T4 and vband which can fit a large range of chassis (with final fitment details varying in each case). No specific photos but all set up and figured out to make it...

Not all v-band turbos share the same v-band flange. For most common brands/options it comes down to the centering ring size- the male lip on the manifold outlet and matching female groove on the turbine housing inlet. Each brand has a different size groove, so some brand turbos will "fit" on...

The MHI downpipe with the wastegate off the flange/turbine housing can be either 38mm or 44mm :) Currently holding off on separate downpipe orders while we catch up on manifold orders so hidden on the website unless you use search (comes up under "MHI downpipe."*edited since we likely read it...

Couple updates :)

Just as a reminder, Robert was very involved with the testing and results. We spoke with him in great depth about designing, creating, and testing it. He was in full support. He still is. Additionally, we covered this test in our tech seminar last weekend at the shootout; Robert was present...

Wastegate inlet and turbo inlet are the same size (50mm) on this one :)

DSM Stock Frame/Bolt-on :)

We've added DSM and Evo 5/8" turbo oil drain kits to the line-up for applications that the 3/4" kits didn't quite fit, allowing a drain kit for just about every turbo. The 3/4" kit is excellent for Borg Warner S300/400 and Holsets that require a large diameter drain to handle the oil...

Slacking on photos but new phone cameras are fancy

Thank you Marty!! The rest of these just fell into place after developing the 3/4" kit :)

All of our drain kits include self sealing oil pan bolts with o-rings under the bolt heads :)

Full flow 5/8" drain kit for 14b/16g/FP bolt-on turbos where the factory drain doesn't quite work or if you would rather slide a hose off during turbo removal instead of dealing with gaskets. Each fitting is slightly angled toward each other for an easier bend with the high temp hose and the oil...

As far as we know @oittehgaps above with his Pup and @4g63quest soon. Not sure of the screen names for others but definitely a special thing to see along side a longitudinal 4g63 :)

A couple install photos from some one-off manifolds and can't wait to see more!

Showing off some of the RWD manifolds :)We've nailed down a really nice placement that will work with most applications and architecture, and fits a wide range of turbos and flange options. Medium to large frame, V-band and T3 to divided T4.We will get them sorted out on the website but...

Hope everyone had a great Thanksgiving!

Thank you! All pricing is on the website :)

Miller syncrowave 200 (:

An interesting one that involved a lot of welding :)Compact V-band for an Evo III with a 6466, 2.3L, and varying octane fuel so 2x TiAL 44mm wastegates were used for the most boost control possible. Getting everything to package in the confined engine bay was a challenge but we are very...

We were happily surprised!They should share similar dimensions but no good reference to truly say one way or another of course

During the shut downs, noise was a concern making the second round of dyno pulls, so if we had to guess- longer, higher rpm pulls weren't helping. That would be a question for Whalen Speed to know for sure.We tend to think of the consolidated runner approach as more of a freedom in design...

Thanks Marty!!We really don't know directly as some of the lower boost runs weren't revved as high, but from the rest of the graphs it's hard to say large runner will have the advantage there when it is down 25whp just 200rpm prior on this setup. We could see them merging around 8000rpm on...

Large Runner vs. Small runnerWe’ve always felt strongly about taking advantage of runner/primary sizing and matching it to the setup, which is nothing new for manifold/header building, but somewhat uncommon for most DSM and Evo turbo manifolds. Historically, “large” runner options have been...

Thought we could throw a new photo up before this one goes out :)