[MayhemSmoker]

Hey guys I have a 2013 bmw 335is n54. One of my turbo is blow and I want to swap to a single turbo. I was thinking about getting the doc race single turbo top mount. I don’t really race like that but I would like have atleast 500hp. Any thought on what I should do? And how much would it cost to install the single turbo kit?

[SlowE92]

Originally Posted by MayhemSmoker

Hey guys I have a 2013 bmw 335is n54. One of my turbo is blow and I want to swap to a single turbo. I was thinking about getting the doc race single turbo top mount. I don’t really race like that but I would like have atleast 500hp. Any thought on what I should do? And how much would it cost to install the single turbo kit?

You would easily get 500 hp with a single turbo.. You'd easily get 500 WHP on a single lol. The cost to install a single is roughly the same as installation of a good set of new twins.. around 7k for a single, +/- 500

[SlowE92]

Originally Posted by MayhemSmoker

Hey guys I have a 2013 bmw 335is n54. One of my turbo is blow and I want to swap to a single turbo. I was thinking about getting the doc race single turbo top mount. I don’t really race like that but I would like have atleast 500hp. Any thought on what I should do? And how much would it cost to install the single turbo kit?

or get a pair of decent twins, if you can do the work yourself, save a couple thousand in labor cost. RB turbo is very well known and a very reputable brand for this platform. Just depends on what your goals are.

[MayhemSmoker]

Preicate for the input! I think ill go with the single turbo kit. Im planning on buying all the necessary parts to run the single turbo kit. I have jb4, charge pipe, and bov atm. Which turbo should i go for the 5862 or 6266? Pretty much im just paying for the labor. Ill be providing the turbo kit and necessary part.

[SlowE92]

Originally Posted by MayhemSmoker

Preicate for the input! I think ill go with the single turbo kit. Im planning on buying all the necessary parts to run the single turbo kit. I have jb4, charge pipe, and bov atm. Which turbo should i go for the 5862 or 6266? Pretty much im just paying for the labor. Ill be providing the turbo kit and necessary part.

If it was me personally I'd get the 6266. If your power goal is just 500 hp then go smaller, because 500 hp for a 6266 is barely pushing anything and you'd have a lot of turbo lag. I don't have a single, I have 19T's and pushing over 500 hp pretty reliably. Thats why I mentioned the twins. I can push them to 700 but thats the limit of these, where with the 6266 you can push past 700 hp comfortably on e85.

[MayhemSmoker]

yeah ill most likely end up going for 6266 incase later down the road i want more hp. My car is low miles only like 56k miles. How much you think labor will be if i supply the parts and turbo kit? like a rough estimate?

[CLEAN13BOOSTED]

Advise may want to consider working with a tuner/shop that may also supply the parts. Even with the difference in price they may offer better service and support down the road with any issues or warranty.

[oVeRdOsE.]

Originally Posted by SlowE92

You would easily get 500 hp with a single turbo.. You'd easily get 500 WHP on a single lol. The cost to install a single is roughly the same as installation of a good set of new twins.. around 7k for a single, +/- 500

Depends the brand. CTS Turbo kit is pretty cheap, even if some says are cheap one, no one reported issues and CTS are a very reputable.

single will be more expensive for sure.

In all cases, if manual, a new clutch is also a good idea, add this to the budget.

You ca go smaller, or do a bottom mount 6266 gen2. You can have room for future upgrades and minimal lag.

imo going single is for ''more'' reliability and the sound. So expect to get a nice exhaust, I woul 100% go single exit for that sweet L6 turbo sound

[SlowE92]

Originally Posted by MayhemSmoker

yeah ill most likely end up going for 6266 incase later down the road i want more hp. My car is low miles only like 56k miles. How much you think labor will be if i supply the parts and turbo kit? like a rough estimate?

Rough estimate for labor on the LOW end 7k based on some research. A full installation including parts and labor people report on average anywhere from 13-20k. The single turbo kit you order is just the beginning, the doc race kit to my knowledge isn't actually a complete kit and you need some other pieces of hardware that would run you another 1-2k. Thats why I quoted around 7k for a full kit.

[oVeRdOsE.]

yeah, pretty expensive for an ''old car''.

from my research the best option is speedtech with pulsar turbo, quality/price wise.

Of course On3 was 2700$ few weeks ago, but few member stated that you need an other 1000$ to complete the kit and few thousand more after couple thousand of miles because it's cheap.

[SlowE92]

Originally Posted by oVeRdOsE.

yeah, pretty expensive for an ''old car''.

from my research the best option is speedtech with pulsar turbo, quality/price wise.

Of course On3 was 2700$ few weeks ago, but few member stated that you need an other 1000$ to complete the kit and few thousand more after couple thousand of miles because it's cheap.

I was also looking at the speedtech but with the precision turbo and bottom mount. I heard that the pulsar is cheaper because it's chinese manufactured and supposedly has issues, but my 19T are chinese and haven't had any issues with them. Had them balanced by Turbo Technics in the UK. To my knowledge the Speedtech manifold is as up to par with the doc race. For OP consider speedtech kit as well. Turbo option is up to you but can't go wrong with precision. More expensive doesn't always mean it's better.

[lowrydr310]

Don't forget fuel system upgrade costs as well. I don't see a point in going to a big single unless you're adding port injection and the corresponding low pressure fuel pump upgrades that are needed.

But even on a good set of upgraded twins for 500HP you'll still need to factor in the cost of fuel system upgrades. That's about the max you can squeeze out of the HPFP (with E85.)

[MayhemSmoker]

Thank you all for your input! It’s greatly appreciated. It gives me an idea of what I need to do. I’ll call local shop that specialize in bmw around my area and see what they suggest etc.

[Torgus]

Originally Posted by MayhemSmoker

Thank you all for your input! It’s greatly appreciated. It gives me an idea of what I need to do. I’ll call local shop that specialize in bmw around my area and see what they suggest etc.

Single turbo.

[335boston]

I’ve got a doc race kit 6266 and absolutely love it. I’ve got it so paired with the jb4 and tuned via doc vu. I pretty much love every part of it , but I will say the dual dump pipes can get a bit excessive . Not too much of an issue with me since it’s not a daily driver. Definitely will need some fuel upgrades as mentioned especially if using e85 which I think everyone will agree is much better than using pump .

[oVeRdOsE.]

Originally Posted by lowrydr310

Don't forget fuel system upgrade costs as well. I don't see a point in going to a big single unless you're adding port injection and the corresponding low pressure fuel pump upgrades that are needed.

But even on a good set of upgraded twins for 500HP you'll still need to factor in the cost of fuel system upgrades. That's about the max you can squeeze out of the HPFP (with E85.)

for his goal no need for a port injection.

He might be just fine with OEM fuelling system.
I set up my base map with all OEM on a ST 6262, and then planning to upgrade the lpfp and adding a meth/water kit. Ill see from there. my goals are 600bhp.

[lowrydr310]

Originally Posted by oVeRdOsE.

for his goal no need for a port injection.

He might be just fine with OEM fuelling system.
I set up my base map with all OEM on a ST 6262, and then planning to upgrade the lpfp and adding a meth/water kit. Ill see from there. my goals are 600bhp.

I completely forgot about meth injection, you're right.

I just always convinced myself if I ever went to a big single, I'm committed at that point and might as well go really big.

[Torgus]

Originally Posted by oVeRdOsE.

for his goal no need for a port injection.

He might be just fine with OEM fuelling system.
I set up my base map with all OEM on a ST 6262, and then planning to upgrade the lpfp and adding a meth/water kit. Ill see from there. my goals are 600bhp.

You should be able to hit 500whp or ~600bhp with just a 450 in your tank on 93. Most 6266 and 6466 hit 500whp easy on pump only.

Water/meth will help make it VERY consistent and never have timing pulls due to a hot day out and warm IATs and also let you push more boost if you want, depending on if you want to start to use meth for fueling.