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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Twin's Upgrade



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      06-15-2025, 03:21 AM   #1
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Twin's Upgrade

Simple enough scenario just trying to find the best bang for buck and overall reliability. Hear a lot of great things about rb’s so I’ve considered their Rb Two model but am still considering Pure’s 600 model because of the lifetime warranty on ecstuning. Car is practically stock besides catless downpipe so anyone with experience willing to share would be appreciated 👍
Budget is something around the $3000 mark
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      06-15-2025, 06:33 PM   #2
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Also add TPC stage 2 turbos
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      06-17-2025, 09:27 PM   #3
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Quote:
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Also add TPC stage 2 turbos
Just Curious what makes you choose these over RB? Definitely more affordable but build quality worries me as there isn’t much online about TPC, from what I can find at least.
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      06-18-2025, 12:56 AM   #4
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RB all day, no question about it. A crazy good value, top notch performance, Rob gives exceptional customer service both before and after the sale, and you'd be supporting a small business and a great guy who's worked hard to put out a good product.

Pure are also super reliable but I've seen more Pure failures than RB and they're pricier too.
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      06-18-2025, 12:59 AM   #5
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Quote:
Originally Posted by whyzee125 View Post
RB all day, no question about it. A crazy good value, top notch performance, Rob gives exceptional customer service both before and after the sale, and you'd be supporting a small business and a great guy who's worked hard to put out a good product.

Pure are also super reliable but I've seen more Pure failures than RB and they're pricier too.
Yeah the reviews for RB are very appealing which is why I’m still considering them. You have any input on Turbo Parts Canada ? Seem reputable enough and the price for performance is unmatched at least on paper.
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      06-18-2025, 09:06 AM   #6
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I have the tpc 19ts for 1.5 + yrs now, no issues boost great. Running only 21psi to 7000rpm shift w DI /e30.
At the 1/4mi Silentn54 9’s ran these on his n54…
I could have picked RB too and i think the 2s are quite good. Wanted a 19t based on the research i did, the records helped, and also no core.
The Pure seems good too and there is one more called tte500 or 600 from germany.
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      06-18-2025, 02:33 PM   #7
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Quote:
Originally Posted by Sgop335 View Post
I have the tpc 19ts for 1.5 + yrs now, no issues boost great. Running only 21psi to 7000rpm shift w DI /e30.
The record holder for 1/4mi Silentn54 9’s ran these on his n54…
I could have picked RB too and i think the 2s are quite good. Wanted a 19t based on the research i did, the records helped, and also no core.
The Pure seems good too and there is one more called tte500 or 600 from germany.
We have an Australian customer who ran a best of 9.54@146mph with a lot of mid 9's passes with similar mph to back it up, until reading this I'd figured that he was the record holder?
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      06-18-2025, 03:44 PM   #8
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Quote:
Originally Posted by Rob@RB View Post
We have an Australian customer who ran a best of 9.54@146mph with a lot of mid 9's passes with similar mph to back it up, until reading this I'd figured that he was the record holder?
Not sure, may be I should rephrase my post above. Was offering op a datapoint.
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      06-19-2025, 01:53 AM   #9
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Quote:
Originally Posted by Sgop335 View Post
I have the tpc 19ts for 1.5 + yrs now, no issues boost great. Running only 21psi to 7000rpm shift w DI /e30.
At the 1/4mi Silentn54 9’s ran these on his n54…
I could have picked RB too and i think the 2s are quite good. Wanted a 19t based on the research i did, the records helped, and also no core.
The Pure seems good too and there is one more called tte500 or 600 from germany.
Sounds like we came to very similar conclusions then. Will most likely buy from TPC, can get a stage 2 set with all the install hardware for $2500 rn. Thanks for the replies 🤙
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      06-20-2025, 07:17 PM   #10
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I have RB Twos in my car (1st gen). 433hp on a Mustang dyno with pump gas and daily driver friendly mods (stock fuel system with exception of Walbro 450 pump and cooling case on my EKPM fuel module).

I'm a firm believer in good customer service for important matters (which in my case my car is) and having good, open communication with Rob was very helpful. I'm not sure how easy it would be with other vendors but he was able to take his time with explanations and very attentive which to me was a good indicator that he takes his business and products seriously.

The turbos themselves were well packaged on arrival, came with balancing sheets, and great build quality was certainly evident. The turbos spool up beautifully and still run great to this day (i've put about 20,000km on them so far). If I was to do it all over again I would go with RB once again should I be looking at a twin turbo solution.

Video from dyno day:
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