[turb0mik3]

Originally Posted by Stangorang

Taking these singles off for smogging every 2 years would be such a bitch

I have friends i'm not worried, hehe.

[Lulz_M3]

Originally Posted by Stangorang

Taking these singles off for smogging every 2 years would be such a bitch

Do they actually inspect the car or just run an exhaust sniffer or OBD readiness test?

[acdHQK713K]

Originally Posted by Lulz_M3

Do they actually inspect the car or just run an exhaust sniffer or OBD readiness test?

Both in Cali.

[Sigma 3]

Originally Posted by turb0mike

Another quick question I have is whether this easy DIY upgrade (in simple terms) will fit? I know that the Vishnu kit was meant to fit tight, so are we just waiting until the actually manifold comes out to see fitment? Or does steed speed have a 335i shop car and can guarentee the proper fitment of a gt35r'ish turbo?

What happened to you upgraded twins?

[sdstatestud88]

Originally Posted by Stangorang

Both in Cali.

Starting in January of 2013 california will be switching its standards to an obd 2 port only and no exhaust sniffer.

Back on topic though

[acdHQK713K]

Originally Posted by sdstatestud88

Starting in January of 2013 california will be switching its standards to an obd 2 port only and no exhaust sniffer.

Back on topic though

Still have to pass the visual inspection...

[turb0mik3]

Originally Posted by Sigma 3

What happened to you upgraded twins?

Because this will obviously be less fabrication. It is almost 3 pieces of hardware vs a lot more for twins. Just got off the phone with Fred from ER and he knows a shit ton of turbos and I have the perfect setup I will be testing out with this manifold when it comes out.

I will have to reread this thread but I hope they make an attempt to make this manifold even for all cylinders? Also don't know, but will this be for both T3 and T4?

EDIT: T3 money...

[Laid Black 335i]

Originally Posted by Stangorang

Still have to pass the visual inspection...

As far as the Vishnu kit goes, the only thing visible under the hood is the DCI and PWM meth pump.

[Jake@MOTIV]

A T3 35r will not have ANY issue making 500 at moderate boost levels. I don't mean to insult at all - but if you look at the compressor maps you will see that the turbo will LOVE our motor in the boost levels I would like to run. Shiv's turbo was only beginning to flow when he made 500 where as a T3 35r would be beginning / just have entered its sweet spot at that point.

As for doing upgraded twin turbo manifolds. It's not a bad idea its just not something I would be interested in for a few reasons (and none of them are because it is bad). I wouldn't do twin upgraded mani's and discos because (1) buying twin gt28rs would be costly (2) why go twins when you have an inline 6 that can easily run a single (2) paying for two manifolds and paying for two downpipes (4) space will be even tigheter with all the different arrangement of parts that it will require. On an older v6tt S4 it was a great idea to run twin 28rs because you couldn't have a single manifold and big turbo spooling well off of all 6 cylinders becasue well it's a V6...make sense?

[turb0mik3]

Originally Posted by FlyLow335i

A T3 35r will not have ANY issue making 500 at moderate boost levels. I don't mean to insult at all - but if you look at the compressor maps you will see that the turbo will LOVE our motor in the boost levels I would like to run. Shiv's turbo was only beginning to flow when he made 500 where as a T3 35r would be beginning / just have entered its sweet spot at that point.

As for doing upgraded twin turbo manifolds. It's not a bad idea its just not something I would be interested in for a few reasons (and none of them are because it is bad). I wouldn't do twin upgraded mani's and discos because (1) buying twin gt28rs would be costly (2) why go twins when you have an inline 6 that can easily run a single (2) paying for two manifolds and paying for two downpipes (4) space will be even tigheter with all the different arrangement of parts that it will require. On an older v6tt S4 it was a great idea to run twin 28rs because you couldn't have a single manifold and big turbo spooling well off of all 6 cylinders becasue well it's a V6...make sense?

I feel ya, I have moved away from the twins theory now that I know more about turbos. That is exactly what Fred said about the T3 35r.


GT35R 0.82 A/R T3 divided (twin-scroll) turbine housing. Garrett casting, 3" V-band outlet. For turbo: GT3582R (68mm turbine wheel)

This would be the perfect choice especially with the good A/R ratio. I feel if we replaced Shiv's turbo with this it would be almost linear HP and still have more to give up into the 600hp. Limiting lag with the A/R, twin scroll, and T3 but still have the air copacity to make upwards of 600+ at peak efficiency. What would we be talking about in terms of psi? Maybe 24-25 for high 500s? The 500-600whp range on this turbo would be ridiculous.

I am just hoping and praying steed speed makes an evenly distributed manifold!!!

SO PUMPED RIGHT NOWWWWWW!!!!!!!

[turb0mik3]

Leen just shot me an email back and said the piping will be uneven and it won't have that much bearing on the overall effectiveness. Is this the case? Fred talked about how it was really important to make the pipes even so the exhaust pulses won't be uneven. Any input would help thanks!

[dzenno]

Dont worry just trust the man, it'll be an amazing manifold and work great...the reason he isnt even posting until its ready is because of various forum experts if you know what i mean...

[Jake@MOTIV]

While Fred is correct - it really won't make a difference on this platform because we have street cars - not racecars. Yea it is more efficient to have a true twin scroll with equal length runners but its not possible. We won't even have twin scroll manifolds. The necessary evil of having the o2's preturbos makes it impossible to have a true twin scroll that groups the exhaust gasses by pulses. In a perfect world having equal length runners that are grouped by their firing orders and feeding a twin scroll turbo would be great. Realistically it isn't going to happen and runnign a twin scroll isn't needed so get a standard T3 GTx35 with IWG as a .82 housing or if you want more up top the 1.06 will flow well.

[Rob@RBTurbo]

Equal length on a turbo car means very little, it would be the least of my worries.

[turb0mik3]

Originally Posted by FlyLow335i

While Fred is correct - it really won't make a difference on this platform because we have street cars - not racecars. Yea it is more efficient to have a true twin scroll with equal length runners but its not possible. We won't even have twin scroll manifolds. The necessary evil of having the o2's preturbos makes it impossible to have a true twin scroll that groups the exhaust gasses by pulses. In a perfect world having equal length runners that are grouped by their firing orders and feeding a twin scroll turbo would be great. Realistically it isn't going to happen and runnign a twin scroll isn't needed so get a standard T3 GTx35 with IWG as a .82 housing or if you want more up top the 1.06 will flow well.

Originally Posted by RobBeck

Equal length on a turbo car means very little, it would be the least of my worries.

Ah, ok. He was talking how it is nearly impossible to get that perfect length across the board as well. For 1k I can't complain either, hehe.

I just think the 1.06 will spool a lot later and not be as good on the track. You would need to crank up the boost to get some good drivability and even put the turbo in its effectiveness range.

Thanks for all the responses. I have tripled my knowledge of turbos today, haha.

[woosh]

Where's the like button on this thread?!

[ChuckD05]

Sub'd For more info... this is actually my favorite thread ever.. very promising Dynos and 10 second n54s ahead

A AWD 335 needs to beef everything up and upgrade to any big turbo out there... no reason why a 6speed 550whp awd n54 couldnt go 10.90s with a 1.7 60 foot

[ZTUNER]

Been in hibernation for 6 months or so. Tired of people with the GOD complex This thread woke me up.

Waiting on cobb atr and a decent manifold, the rest is no issue. Need to buy another 335i to play with though. Its nice to see familiar faces in this thread. Hi flyinlow.

Harry

[turb0mik3]

Originally Posted by ZTUNER

Been in hibernation for 6 months or so. Tired of people with the GOD complex This thread woke me up.

Waiting on cobb atr and a decent manifold, the rest is no issue. Need to buy another 335i to play with though. Its nice to see familiar faces in this thread. Hi flyinlow.

Harry

Ya, this thread has SO much win. It is just showing that this turbo swap is easier than most people think and more cost effective.

[BlueLion]

this thread is bringing everyone out...its got my interest to

[klipseracer]

Originally Posted by BlueLion

this thread is bringing everyone out...its got my interest to

Me too... Gonna have to buy again.

[Full-Race Geoff]

i usually lurk here, and am excited to see the steedspeed design. I am the lead engineer at Full-Race, and I am personally one of the pioneers for big power twinscroll setups, just wanted to briefly throw in my 2 cents..

Originally Posted by boostd92

This is the conventional way of making a twin scroll big turbo manifold as seen here:


The two extra pipes sticking out the side of the turbo flange are for 2 external wastegates. This specific manifold above isn't true twin-scroll (appears the runners are paired by banks and not by firing order), but it is the same general design.

thanks for posting up, however i disagree with the text in bold. Our 2JZGTE twinscroll manifold you posted is 100% true twinscroll. modern turbocharged Inline 6 engines have a firing order of: 1,5,3,6,2,4

cyl 1 = bank 1
cyl 5 = bank 2
cyl 3 = bank 1
cyl 6 = bank 2
cyl 2 = bank 1
cyl 4 = bank 2

see the pattern? 1, 2, 1, 2, 1, 2, 1, 2

that is what we want for twinscroll OR twin turbo. So any time you see a twin turbo engine or a twinscroll single turbo => both should have the same cylinder pairings and firing orders. This is perfect cyl pairing...

we have done some crazy experiments over the years, even made custom cams for a V8 engine and changed the firing order to get twinscroll right for that challengine configuration. this is why BMW went with the "hot-V" with the turbos in the middle of the v8 for the m5, 550i and X-m.

Originally Posted by FlyLow335i

I don't care if it is true twin scroll (which is kind of not possible given our o2 requirements and dual banks).

twinscroll is very straightforward for this engine/chassis, just run one o2 in each scroll (bank), the same as if it was a twin turbo

Originally Posted by FlyLow335i

While Fred is correct - it really won't make a difference on this platform because we have street cars - not racecars. Yea it is more efficient to have a true twin scroll with equal length runners but its not possible. We won't even have twin scroll manifolds. The necessary evil of having the o2's preturbos makes it impossible to have a true twin scroll that groups the exhaust gasses by pulses. In a perfect world having equal length runners that are grouped by their firing orders and feeding a twin scroll turbo would be great. Realistically it isn't going to happen and runnign a twin scroll isn't needed so get a standard T3 GTx35 with IWG as a .82 housing or if you want more up top the 1.06 will flow well.

please take no offense - i disagree with almost everything you wrote in this ^ post. your other ones are on point however! twinscroll is the way to go in this chassis IMO... its not easy but sooo worth it.

Originally Posted by boostd92

log manifolds have worked fine in the Honda community for decades (wow, that's actually true and makes me feel old).. just not as optimal

talking about feeling old ... here is a good video from evans-tuning.com of a honda of log manifold VS longer runner manifold

Originally Posted by Das Stig

edit: in case Geoff is reading this - THAT WAS A JOKE! FINISH GETTING TURBO KITS TO MARKET BEFORE STARTING INDY CAR PROJECT

Originally Posted by bryce

^i had a full-race manifold for my old rsx and I'm very familiar with twin scroll manifolds.

Originally Posted by turb0mike

GT35R 0.82 A/R T3 divided (twin-scroll) turbine housing. Garrett casting, 3" V-band outlet. For turbo: GT3582R (68mm turbine wheel)

thats a decent turbo, for a 2L motor. For a 3.0L the twinscroll divided 0.82 a/r is too small

Originally Posted by FlyLow335i

http://www.full-race.com/store/turbo...-75-turbo.html

It is a very efficient, affordable, and optionable turbo. You can configure it in MANY ways including 1.0+ a/r's with twin scroll. They are known to have a very loud spool and are capable of 45+ psi lol. Great turbos.

agreed, that turbo is a fantastic unit. Outperforms many others at twice its price, and incredibly robust/durable. I haven't seen a single one come back, literally not one.