Switchback racing Single kit.
 

Thoughts on the kit? I am looking for a single turbo kit and right now its between the switchback kit and the bp kit. i am leaning towards the switchback kit since its top mount and I want to see the turbo haha.

Get the SOHO Single. Switchback quality is not that good.

Soho kit can’t hit 700-800whp though. Bp kit or switchback which is better u think?

BP out of those 2.

BP will have a lot of kits ready to ship come early December. Plenty of customers out there now with well over 800whp.

Switchback kits are great. Good quality, clean welds. They can easily make 700-800 whp. But I would still put BP first, Soho second, and switchback third.

Why do you say BP first?

Speaking as someone with a BP Kit -

Pros:
1) Twin Scroll Turbo. This has a big impact on when your turbo spools. Pay attention to the area under the curve, not just peak numbers. What's your goal? Boost at 4k+ rpms, or boost at 3k+? This is what ruled out the Soho kit for me. They showed great peak power, but I can't drive at peak most days.
2) Ease of install. Don't need to drop the engine, can do this in your garage. This means you can also service it yourself.
3) Good support. If you have an issue, Sasha will respond and take care of you.
4) Can grow with you. The 6467 turbo is enough to support serious whp (high 700s/low 800s).

Cons:
1) Cleaning the filter is a pain in the ***. Consider the filter relocation kit.
2) You may need that good support from Sasha. My intercooler (provided by a 3rd party) shipped to me with brackets welded on backwards. My fuel injectors had the wrong adapters. My charge piping didn't ship until Sasha followed up with the manufacturer.
3) It's not Fast Intentions. Not everything fits perfectly, although everything will fit. Manage your expectations and it will be ok.

My 2 cents. Boosted for 9k miles so far, no issues.

What are you smoking. Can’t reach 700-800whp, please educate me?

Thank you. I was considering the 6767 turbo for 800whp guess I am okay to go with the 6467. Which turbo do you have? When do you make full boost?

Someone who I contacted on SOHO told me the stage 2 kit maxes out at 600whp. Im also worried that the spool times they have are not as good as the BP kit

From my reading, the 6767 would certainly make it more easily (975 hp vs 900 hp). The 6467 would be maxed. I have a 6467. Keeping in mind I'm running on 93 octane with only the 750 cc bosch injectors which come with the kit, on the lightest spring pressure (7.5 psi), dyno sheet attached.

My plan is to get all of my supporting mods to be able to support 800whp except for a built motor and run on stock block for a bit 500whp. Then slap in a built motor and turn up the boost.

https://sohomotorsports.com/pages/vq...ngle-turbo-kit

They publish results on their website. I believe there is a thread on the forum here as well.

Lol, I would recommend doing a lot more research on your part. Making power is easy with VQ’s, keeping them together is another question. Just head studs isn’t going to work at 800whp.

So you got second hand information and fully intended to take that @ face value on a $10k decision? Glad you're ballin out like that.

George, as in George Sohoritis told me the stage 2 kit will make over 700whp on E85. Maybe you should actually call them and get details directly from the manufacturer.

What's the rest of that list look like?

Yea I am going to get the motor fully built. What are some precautions that you think are important to make it hold together?

You are probably right I should do more research on the SOHO kit. I have been looking into the BP kit alot lately sorry!.

I will be getting a stage 4 clutch + flywheel from zspeed
CJM s1.se fuel return +their relay
AEM gauges
OS giken 1.5way LSD
id 1300cc injectors
still debating on 1 walbro 450 or 2 of them
and still deciding on flex fuel.
305/45/17 tire and 325/30/19 for street tires
BC coilovers
motordyne exhaust with art pipes
z1 oil cooler unless the bp kit comes with one.
still debating on engine and trans mounts.

Remember that if you go with some of the kits, the ART pipes won't be an option (BP for example). BP Turn Key kit does have an oil cooler, but I'd say go with Fast Intentions Oil Cooler. Good price, great quality components. I've had multiple small issues with the oil cooler from the turnkey kit leaking, and the fittings are not great quality.

I can't think of any of the turbo kits that would allow the use of ART pipes other than a rear mounted one.

Thanks for the info about oil coolers.

I will probably end up selling them

Either what soho is doing, copper Hg and o rings, or what mazworx has been doing, darton mid sleeves with fire rings, step decking the block, and a secret Hg they use.

With that you will eventually join the blown motor club at the power levels you want.

Why?

Mazworx's motors are 20k cad for me... Still debating on a local shop for 13k or mazworx

Maxworx blocks aren’t 20k.

Just l19 and 625 running big power still blows HG.

He is in Canada. LOL conversion. That is what the CAD is.

Now im confused... I stated earlier I am fully building the motor.

Hate it here lmao

Just wondering where the leaks were, or if you can elaborate a bit?

I now outsource the hoses to the same shop that builds majority of the fuel return hoses for this platform. Have the oil cooler kit on my own car, and haven't encountered issues.

If I don't know that there is a problem, I can't really fix it :)

I kept leaking on the switch plate connectors. The o-rings didn't hold up well kept blowing out and fittings would loosen up. I switched to a dowty washer and haven't had problems since. Just a copper washer would probably work too.

Let me see if I can explain in text. The thermostatic plate has 2 extruded male fittings on it which match the AN female fittings on the hoses that route to the cooler. The male fittings have gaskets which tend to tear and compress unevenly when the male fittings are tightened. I bought an entirely new plate, just to scavenge gaskets surrounded by a metal ring to prevent that. I also had leaks at both elbows of the AN fittings.

Your leak sounds like the same place mine was. I didn't know the name for the washers I ended up with, but yes, dowty washers were the solution. Thanks for giving me a name so I know for the future!

I've been running the Z1 oil cooler for a while and so far so good. I got the Setrab core upgrade w/ it. Fast Intentions makes a great product, so I wouldn't hesitate with theirs either, but I've also never heard a bad thing about BP, so you have a few good options.

You're going to fully build it, which is great, but these things still like to let go uncomfortably often at or above ~700whp. Yes, even built. It's a head gasket/cylinder deformation issue that so far, it seems only 2 shops have remedied(SOHO and Mazworx). Both claim proprietary methods, so they're rather secretive about how they go about it.

Thanks for clearing this up.

Ooooooo damn the conversion rate is outta control

I thought CaD was design machine

Switchback and soho is the same exact kit for the most part to help clear things up.