[AlterZgo]

Originally Posted by MisterSkiMask

I feel that I can answer for him. He develops products to work on cars with stock turbos, if he changed his turbos he would no longer have a car to advance and improve his product on.

Originally Posted by shiv@vishnu

Not yet. But I will very soon

Well, there goes that theory.

[OpenFlash]

Originally Posted by AlterZgo

Well, there goes that theory.

Your theory was correct which is why we didnt have upgraded turbos in our car a year ago. But I think it's about time to make the switch and develop high hp applications. Certainly opens up a whole new world of options/requirements.

[Qmax03]

Im really not to impressed with Upgraded turbos.. Besides the point that they are meant to handle the power longer and are more reliable...

But as far as being alot quicker at the same PSI... ehhh

Last week I seen a FBO + Meth E90 AT Vs a FBO + Meth + RB E92 AT race.. both car on the same TUNE... @ 16psi... 40-140 the RB car was only able to pull 2CL till 140 on its best run ... all the other runs the RB car was ahead by 1 CL... sometimes a bit more...
Just not to impressed.

I will also be upgrading soon but more for reliabilty and knowing those upgraded turbos will hold the 18psi alot longer then the stockers..

[Qmax03]

Whats your definition of massacre ?

If both cars go on 18psi... the E92 will put 3 grey hound buses on the E90... I was under the impression adding 2psi to each car, the E92 might pull another car or 2 AT MOST.

Ill see if they will both re-run.

So unless your willing to Run 18+ psi (High Boost) theres no point in upgrading turbos..

I ran the same E90 when i was driving my E92 MT and beat him by 1CL... so im pretty sure my car would be pretty even at 16psi with that Rb E90... Maybe when i come back out with my car ill run the RB car both at 18psi and lets see what happens.

[MisterSkiMask]

Originally Posted by shiv@vishnu

Your theory was correct which is why we didnt have upgraded turbos in our car a year ago. But I think it's about time to make the switch and develop high hp applications. Certainly opens up a whole new world of options/requirements.

Does this mean that you think that Proceed is about as good as it can get (on a stock car) with hardware that you are using?

Edit: I am sure that you will continue to development on the stock N55

[dzenno]

Originally Posted by Qmax03

Im really not to impressed with Upgraded turbos.. Besides the point that they are meant to handle the power longer and are more reliable...

But as far as being alot quicker at the same PSI... ehhh

Last week I seen a FBO + Meth E90 AT Vs a FBO + Meth + RB E92 AT race.. both car on the same TUNE... @ 16psi... 40-140 the RB car was only able to pull 2CL till 140 on its best run ... all the other runs the RB car was ahead by 1 CL... sometimes a bit more...
Just not to impressed.

I will also be upgrading soon but more for reliabilty and knowing those upgraded turbos will hold the 18psi alot longer then the stockers..

What're you talking about? Have you even looked at tge dynos?? Power delivery at the same psi is VERY different...at about 15psi I was doing 360whp peak with power dropping as early as 5400rpm...with RBs just barely kissing 16psi up top and tapering to 14.5psi after 6500rpm car put down 440-450whp ON PUMP GAS and whats even more important held that power al the way to redline...I have no idea what happened with that RB car but the race should've been A LOT different...

[ultimateracing335]

I cant even keep traction in 3rd and traction control comes on in 4th. The RB's are strong!!!!

[Qmax03]

Originally Posted by ultimateracing335

I cant even keep traction in 3rd and traction control comes on in 4th. The RB's are strong!!!!

What kinda tires are you running ? Even on stock turbos its hard to keep traction in 3rd...

[Qmax03]

Originally Posted by dzenno

What're you talking about? Have you even looked at tge dynos?? Power delivery at the same psi is VERY different...at about 15psi I was doing 360whp peak with power dropping as early as 5400rpm...with RBs just barely kissing 16psi up top and tapering to 14.5psi after 6500rpm car put down 440-450whp ON PUMP GAS and whats even more important held that power al the way to redline...I have no idea what happened with that RB car but the race should've been A LOT different...

Yes ive seen the dyno sheets.. and 360whp on a FBO is kinda low ( if you were FBO at the time ) .. i made 390whp no meth map 7... and 420whp map 10 with meth...

But thats not the discussion right now.. Im in no way putting the RB's or ANY upgraded turbo down... im actually going the RB route my self very soon.. all im doing is telling it how it is.. from a race IVE seen my self in front of my eyes... Both cars run pretty well... Ive even had people say that upgraded turbos dont do ANYTHING unless they have been pushed beyond 16+psi.. and that came from people who actually own RB turbos.

I think we need to get a video of a "GOOD" running Upgraded turbo car on the same PSI as a Stock Turbo car on video to see... Then another VIDEO of the 2 cars on 18psi and see... Anyone here up for it ?

[Qmax03]

Bump... lets keep this alive..

[track lover]

Hi all, This being my first post, despite following this forum and the characters closely for 8 months when I purchased a N55 135i.

I guess Rob is best placed to answer a query regarding the rb turbos: have you compressor maps you could provide and or any other specs relating to the setup; compressor pressure ratio, inducer dia, turbine specs - trim A/R ratio & mass flow lb/min.

The hp numbers being thrown around are huge. I read somewhere the compresspors combined will flow 550hp. On pump (98 RON here in Australia) what will this koit realistically flow atw?

I have to post 5 times before I cam PM anyone so I apologise in advance for the following for msgs

I'm picking up an N54 as a track car before anyone points out the obvious.

[track lover]

I live in Australia

[track lover]

I'm a Leo but don't believe I'm the typical narcisstic type

[track lover]

Rob, your knowledge on turbocharging and fluid dynamics is obvious. May I ask where you gained such experience. I have worked in the automotive industry but when it came to turbos, we'd defer to the experts and noy even try to second guess them. In principle I understand what's happenning and can follow any communication trail regarding turbos on the forum, but to actually select one I'd defer to an expert everyday. the beauty of these cars is the lag free feel. A bad turbo kit would be horrible.

[edo]

Hi,

I'm thinking of upgrading my turbos.
As far as I know, there are at least 5 options: ASR, Team Dynamics, Rob Beck, Helix Motorsport, EPL. Maybe more. Oh, I forgot - ar design single turbo kit.
My questions are:
1) are all of them (except ar, of course) the same size as stock ones, just upgraded internals?
2) do I need to take my engine out in order to change the turbos?
3) what are approximate prices?
4) are all of them direct bolt-on's?
5) which one would you recommend (keeping in mind I'm from Europe)?

Thanks in advance for your answers!

[TurboBimmer]

Originally Posted by edo

Hi,

I'm thinking of upgrading my turbos.
As far as I know, there are at least 5 options: ASR, Team Dynamics, Rob Beck, Helix Motorsport, EPL. Maybe more. Oh, I forgot - ar design single turbo kit.
My questions are:
1) are all of them (except ar, of course) the same size as stock ones, just upgraded internals?
2) do I need to take my engine out in order to change the turbos?
3) what are approximate prices?
4) are all of them direct bolt-on's?
5) which one would you recommend (keeping in mind I'm from Europe)?

Thanks in advance for your answers!

Hi, I don't have upgraded turbos yet, but since they're somewhere on my to-do list, I'll give you my answers:

1) yes
2) no
3) 2500 - 3000 $ + cores (used turbos go for about 300 $ on ebay)
4) yes, only Turbo Dynamics use custom lines for their stage 2 setup
5) RB

[edo]

Thanks for the 'comprehensive' answers

[enrita]

Originally Posted by edo

Thanks for the 'comprehensive' answers

Get the RBs one . p&p , good price and proven power.
you can buy a set used in the usa and sent them to RB directly.

[GeorgeSmooth]

Originally Posted by edo

Hi,

I'm thinking of upgrading my turbos.
As far as I know, there are at least 5 options: ASR, Team Dynamics, Rob Beck, Helix Motorsport, EPL. Maybe more. Oh, I forgot - ar design single turbo kit.
My questions are:
1) are all of them (except ar, of course) the same size as stock ones, just upgraded internals?
All that are available now are upgraded internals only, some are complete wheel assemblies including exhaust side and others do intake wheel only with some cutting back the OE exhaust wheel
2) do I need to take my engine out in order to change the turbos?
No
3) what are approximate prices?
4) are all of them direct bolt-on's?
All but the ASR which requires mods on the block
5) which one would you recommend (keeping in mind I'm from Europe)?
RB, the are similar to the Turbo Dynamics at a better price but include major waist gate upgrades

Thanks in advance for your answers!

Opinions may vary but I have calculated best bang for buck.

[enrita]

I also would like to add that doing the custom lines on the TDs was a major headache that took lots of time and costed me prolly another 1000 USD on top of their price which way higher that the Rbs.

[Alpina_B3_Lux]

Originally Posted by enrita

I also would like to add that doing the custom lines on the TDs was a major headache that took lots of time and costed me prolly another 1000 USD on top of their price which way higher that the Rbs.

To be fair it has to be said, though, that TD could also have provided the modified lines to you, which you refused as apparently your garage said they were able to do it themselves. This would have costed far, far less than 1000 USD.

But I do agree that the RB turbos are better designed in this matter as they retain the original oil and water lines.

Alpina_B3_Lux

[edo]

Thanks for the replies!