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35 minutes ago, Lithium said:

 

Just to remind you the key requirement of the thread:

 
I am building a Street Car (Not a Race car) and will be using mostly RON98 But will be E85 compatible. I want Response more than Top End. 

everyone else seemed to digress from the conversation, and that's fine.

Ok Lithium I know you have beef with me and take every single opportunity to attack me, that's fine. On the block list you go.

21 minutes ago, Kinkstaah said:

If it doesn't have a Ti-al wheel then everything else can be ignored.

Yes, more manufacturers should use better materials. It makes so much of a difference in the real world that I just cry when people spend money on turbos without doing proper research. The only other variable is packaging, but if you physically can't fit a huge turbo somewhere, you are well outside of the "Street car" category.

These lighter materials have their limits and with how hard a lot of people are pushing turbos these days the ti-al wheel would be lucky to last the dyno session on some of these cars. Everything is horses for corses 

the best answer so far has been from @Piggaz which was “what’s your power goal?” 

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1 minute ago, Dose Pipe Sutututu said:

everyone else seemed to digress from the conversation, and that's fine.

Ok Lithium I know you have beef with me and take every single opportunity to attack me, that's fine. On the block list you go.

Lol I actually am here nor there about you tbh, if anything my understanding is you have a huge issue with me for some reason and that'd be the main reason I'd be less cordial with you. 

 

That aside I'm not sure why you're taking it personally when I simply responded to you after you quoted me - I *always* try my best to keep in mind what OP is looking for even if it doesn't align with my personal tastes, so my response would have been more or less the same regardless of who said it. And I'd also not have had a cry if someone said the exact same thing to me as it seems perfectly reasonable.  

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23 hours ago, r32-25t said:

These lighter materials have their limits and with how hard a lot of people are pushing turbos these days the ti-al wheel would be lucky to last the dyno session on some of these cars. Everything is horses for corses 

the best answer so far has been from @Piggaz which was “what’s your power goal?” 

Use a bigger turbo. Spin it less hard. People overdriving turbos does not make it a good turbo selection, nor a good plan.

I can run 200psi boost too and make tons of power, is that what we should recommend then 😛

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7 minutes ago, Kinkstaah said:

Use a bigger turbo. Spin it less hard. People overdriving turbos does not make it a good turbo selection, nor a good plan.

I can run 200psi boost too and make tons of power, is that what we should recommend then 😛

Why not? if the turbo can do it, go for it 

22 minutes ago, r32-25t said:

Why not? if the turbo can do it, go for it 

Strictly speaking it can't, or shouldn't be.   The assumption is that most sensible people keep things within parameters, we expect tuners to not keep advancing timing past the point knock starts happening even if there are gains to be had because you obviously start making things degrade a LOT faster.   We let engines warm up properly before thrashing them.   We run appropriate oil and change it before it loses it's usefulness.   We don't overspeed turbos.    

You also massively overstate the fragility of EFRs.   It is farrrrr from a case of "pass the max compressor speed limit and they explode" like some people try to paint the situation as being. 

The thing I *do* strongly agree with what you said, and have been sorta expecting to get clarified at some point - the actual power goals and therefore the match required is a pretty critical thing that needs to enter this convo before it really gets too much further.   

I threw the EFR8474 down there as the OP mentioned response and it is kinda a "cake and eat it too" option when discussing something like an RB28 for happy street use.   It'll be a nice super responsive turbo on an RB28 if you "only" want 400kw, but will also go past 600kw @ hubs on E85 while still being well safe from running the risk of grenading if you wanted to go there.   The response and flow is good enough that if you want anywhere from 400-600kw then it will do so without any excessive lag or strain, so you're unlikely to end up with regrets going for one.

If you aren't building a roll-race or drag car then it'd be pretty hard to make a case for another turbo unless it's a fitment or budget concern driving the decision making - but that is still making some assumptions on what OP wants.  Be nice to have clarification.

Edited by Lithium

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