Z1 VRX60B vs?

[kevinbonds]

you can get really close to that power with FBO and lower pressure pump and high pressure pump and E70-80

right at 500 rwhp

I would rather have a we’re turbo thats more efficient making that HP, then a FBO and hunting to find E85 and maxing out the stock turbos outside their efficiency range.

 

[NocturnalEmber]

My issue is I want to have my cake and eat it too; The VRX60's are a stretch with how much low end response they lose. For being ball bearing I'd honestly expect better. I'm no expect but I would think a solid EFR setup would out perform these easily, or at least bridge the gap enough that I'd justify putting a set in.

 

[5thZ]

My issue is I want to have my cake and eat it too; The VRX60's are a stretch with how much low end response they lose. For being ball bearing I'd honestly expect better. I'm no expect but I would think a solid EFR setup would out perform these easily, or at least bridge the gap enough that I'd justify putting a set in.

What is EFR? Might want to wait to see what CZP comes out with their Garrett turbo kit or ask AMS what their Alpha turbo kit is about. No details on the website but they're thinking about opening it up to outside shop installs

 

[NocturnalEmber]

What is EFR? Might want to wait to see what CZP comes out with their Garrett turbo kit or ask AMS what their Alpha turbo kit is about. No details on the website but they're thinking about opening it up to outside shop installs

EFR's are a turbo line by Borg Warner (Engineered for Racing.) I'd say at this time they are likely the best turbochargers you can buy on the consumer market; Those would be the closest case to having my cake and eating it too. If the VRX60 ball bearings have about a 1,000 RPM deficit compared to the stock turbos in terms of early response, EFR's would likely close that gap to the point I'd consider the upgrade.

From what I've read of people that have used them on other platforms, they tend to see full boost under 3,000 with a size larger than the 6258 on a 4 cylinder engine; So I imagine the 6258 on each cylinder bank in our engines would perform pretty well. They aren't cheap, but even for two of them you are looking at a significant savings over the Z1 turbos and likely immensely better performance. Granted fitment might have to be looked at, but I think that's a minor issue assuming they bolt up, which they should, the flange is compatible.

 

[5thZ]

EFR's are a turbo line by Borg Warner (Engineered for Racing.) I'd say at this time they are likely the best turbochargers you can buy on the consumer market; Those would be the closest case to having my cake and eating it too. If the VRX60 ball bearings have about a 1,000 RPM deficit compared to the stock turbos in terms of early response, EFR's would likely close that gap to the point I'd consider the upgrade.

From what I've read of people that have used them on other platforms, they tend to see full boost under 3,000 with a size larger than the 6258 on a 4 cylinder engine; So I imagine the 6258 on each cylinder bank in our engines would perform pretty well. They aren't cheap, but even for two of them you are looking at a significant savings over the Z1 turbos and likely immensely better performance. Granted fitment might have to be looked at, but I think that's a minor issue assuming they bolt up, which they should, the flange is compatible.

EFR's are a turbo line by Borg Warner (Engineered for Racing.) I'd say at this time they are likely the best turbochargers you can buy on the consumer market; Those would be the closest case to having my cake and eating it too. If the VRX60 ball bearings have about a 1,000 RPM deficit compared to the stock turbos in terms of early response, EFR's would likely close that gap to the point I'd consider the upgrade.

From what I've read of people that have used them on other platforms, they tend to see full boost under 3,000 with a size larger than the 6258 on a 4 cylinder engine; So I imagine the 6258 on each cylinder bank in our engines would perform pretty well. They aren't cheap, but even for two of them you are looking at a significant savings over the Z1 turbos and likely immensely better performance. Granted fitment might have to be looked at, but I think that's a minor issue assuming they bolt up, which they should, the flange is compatible.

Interesting, thank you!

 

[VR30Z6spd]

still nothing in the market, its been two years. look at the Yaris corolla GR where they have after market turbos all over the place. direct bolt ons

the e wastegate is crucial for us to tune on factory ecu unless we mess with external boost controllers to make EFR to work.


i am tired of waiting

 

[NocturnalEmber]

still nothing in the market, its been two years. look at the Yaris corolla GR where they have after market turbos all over the place. direct bolt ons

the e wastegate is crucial for us to tune on factory ecu unless we mess with external boost controllers to make EFR to work.


i am tired of waiting

There are kits that adapt electronic wastegate control onto the EFR's, I can't imagine it would be too difficult to retrofit the factory electronic wastegates. If I had an engine on a bench I'd start tinkering.

 

[VR30Z6spd]

e50 with stage 1 injectors VR60 turbos

X6

 

[5thZ]

e50 with stage 1 injectors VR60 turbos

X6

That's pretty dang good.

Edit: I discussed the AMS Alpha turbos which they don't have any details about on their website. Basically they're only good for straight line speed/drag racing, per AMS

 

[Katum68]

That looks pretty...not great..honestly. Am I missing something here? For upgraded ball bearing turbos, that seems really anemic. Torque comes on at 3.5~ and you see drop off well before redline.

The factory turbos have better response and taper off close to the same time.

Z1 told me that with 93 fuel and VRX60s I could get low 500's. Everything but downpipes and All NISMO engine mods.

 

[NocturnalEmber]

Z1 told me that with 93 fuel and VRX60s I could get low 500's. Everything but downpipes and All NISMO engine mods.

Define "all nismo engine mods"; to my knowledge that's the intakes. Assuming you mean a fully stock exhaust and downpipe, 500 isn't that impressive. Sure its nice, but considering you have to replace the turbos to get there, for me the juice wouldn't justify the squeeze.

That and as time goes on the more and more averse I get to anything Z1 makes.

I really wish I had the facilities to test some EFR 6258's on here; With some EWG adapters they should provide better response and better power than the Z1's by a long shot.

 

[Katum68]

Define "all nismo engine mods"; to my knowledge that's the intakes. Assuming you mean a fully stock exhaust and downpipe, 500 isn't that impressive. Sure its nice, but considering you have to replace the turbos to get there, for me the juice wouldn't justify the squeeze.

That and the as time goes on the more and more averse I get to anything Z1 makes.

I really wish I had the facilities to test some EFR 6258's on here; With some EWG adapters they should provide better response and better power than the Z1's by a long shot.

I bought NISMO Cold Air Intake, Cat Back Exhaust, Heat Exchanger. Z1 was going to do Z1 Low Pressure Fuel Pump, Intercooler Coolant Pump, EcuTek Performance Tuning Package + Inhouse Tune, VRX60 Turbos & HKS BOVs. No downpipes. Low 500's. Cost would be around 12K. Due to different things, I did not go that way.

 

[NocturnalEmber]

I bought NISMO Cold Air Intake, Cat Back Exhaust, Heat Exchanger. Z1 was going to do Z1 Low Pressure Fuel Pump, Intercooler Coolant Pump, EcuTek Performance Tuning Package + Inhouse Tune, VRX60 Turbos & HKS BOVs. No downpipes. Low 500's. Cost would be around 12K. Due to different things, I did not go that way.

I would venture to say for a regularly driven street car, 90% of that is useless. While the air to water system is problematic, I can't imagine a street car occasionally accelerating on open roads will be enough to overload it and cause the ecu to pull timing due to IAT's.

Turbos and lpfp seem a bit overzealous.

Honestly it sounds like they are putting the cart before the horse with most of those mods. Full downpipes, a cat back exhaust, intakes, and a tune will be your best power mods at this point. The glaring restriction on this car is the small diameter exhaust and downpipes.

 

[Katum68]

I would venture to say for a regularly driven street car, 90% of that is useless. While the air to water system is problematic, I can't imagine a street car occasionally accelerating on open roads will be enough to overload it and cause the ecu to pull timing due to IAT's.

Turbos and lpfp seem a bit overzealous.

Honestly it sounds like they are putting the cart before the horse with most of those mods. Full downpipes, a cat back exhaust, intakes, and a tune will be your best power mods at this point. The glaring restriction on this car is the small diameter exhaust and downpipes.

I have the Cat Back and the intakes and will be getting the LDP and a tune.

 

[NocturnalEmber]

I have the Cat Back and the intakes and will be getting the LDP and a tune.

I understand some people have emissions tests to worry about, but aside from those cases LDP's always seemed like a useless mod to me. You are still leaving the biggest restriction present in the exhaust - the primary cats coming off the turbos.

While I've heard some say that you can get some catted downpipes and have the CEL tuned out, that likely won't leave the car able to pass emissions (though I've heard depending on the state you can have one readiness monitor showing 'not ready' and it is passable, but that's very much a 'ymmv/check your states guidelines' type of situation.

If you have no other option but to only do LDP's, you will already be in better shape with those, intakes, cat back, and a tune as opposed to spending all that money Z1 quoted for mostly supporting mods that aren't needed at the stock level.