There is no point ,for me at least, compare EFR 8374 to GT3582R....it's obvious that it will make much more power on kill mode.It would be sad if it wouldn't.

I hoped it will also spool faster but it seems it's not the case.

EFR 8374 should be compared at least with GTX3582 but IMO me and I guess many others would like to see comparsion with HTA86 in the same configuration SS or TS.

 

In regards to spool, it sounds like it feels different on road to on the dyno as one would hope - but that dyno result puts across the EFR as a turbo that spools similar, has more torque through the midrange (more boost and a different fuel makes that hard to compare), but the way the GT4088R holds on up top comparatively is very very hard to ignore. It gives the impression the EFR8374 falls over quite badly comparatively in up high flow, and that IS a place the dyno can be used to tell what the turbo has to give.

Am all ears to hear the reasons on that one, as it has been previously stated that the EFR8374 is more GT4088R+ territory in flow (in posts, as well as compressor maps) and its hard to imagine that it has gone that far wrong. I've seen results of an S2000 that went from a GT3582R to a EFR8374 that looked much more favourable, too.

 

That 4088 is putting the screws to the EFR turbo in that comparison at less boost. Damn!

 

n2oiroc,
let me know if you'll let me borrow your 8374. I want to run it after the 7670, but I can't get my hands on any.

 

Just wonder,what is your track time around Sepang??
Any more pics of your car??

 

Wait, so the 4088 is out spooling and out powering a 8374 on worse fuel and less boost...? The e85 would allow for more timing, better spool, and lower intake temps with similar octane. . .

 

Yeah, when are you expecting to have the car in one piece and running?

 

Good Deal!

 

Im still a couple months behind. Trans is at shep, still waiting on a front diff to send the t case out and i need to swap everything over, my car is bone stock down to the airbox. Have a fuel system to plumb, proefi to wire up, etc. His setup is a lot like mine, so its a great setup to see what the turbo is capable of.

 

Ernie will give some good non biased results too. I am excited to see them. I just hope the EFR lives up to all the hype.

 

Double post.

 

I now want to get another evo and do efr build... This thread isn't helpIng my low income

 

can i just ask why these turbo's are still getting so much attention? their HUGH,dont work with many turbo kits, are hard to get, and have YET to prove that they are even equal to some of the precision/HTA turbo's already out and a dime a dozen? but yet some people still SWEAR they are the greatest thing since sliced bread? not being negative just very interested to see some REAL DYNO/E.T proof....

 

Material properties and basic engineering principles is why I'm hot to trot.

With a turbine wheel that is 60% of the mass you can "compromise" the inertia of the wheel by making it large in diameter... to improve it's mass flow and response... BECAUSE you're starting off soo much better than anyone with an inconel wheel. It opens up a lot of design freedom in the turbine wheel design which will allow the turbo to "have it's cake and it eat it too"

That and the CHRA with teh crazy bearing setup and the dual dynamic seals makes me pretty happy. Forged milled compressor wheel using their extended tip technology... and it comes free with an anti-surge housing... and SS investment cast turbine housing (TWIN scroll and 3" v-band discharge)

Basically for soemone who thrives on transient response it's a wet dream on paper. I for one think it's the next direction to head for turbocharger development. I think a lot of the design stuff BW did can be copied by competitors (and already is....) but the titanium turbine wheel is something I think that separates the men from the boys.

That's my 2 cents. Until I've put the wood to these turbo's on ER's dyno and compare against other setups... I simply won't know.

n2oiroc,
Shortblock is assembled, I'm 2 weeks from assembling the long block... and another 3 from getting it fired up. April 6th is the date I'm targeting. Pretty much working on it every chance I get.

 

Oh I def agree on paper they are awesome. And trust me I love transient response to one of the few evo guys that believe in twin scroll had a custom TS t4 mani and ik it worked. I just don't get all the conviction on these being the best without the real world proof yet, trust me I hope they work as good as the hype