EFR 7163 T25 AR .85
 

I would like to know if there is anyone with this turbo and how much power and it makes and how is it the spool.

I haved search but without much information.

Thanks

+1 Interested.

I'm looking to upgrade gt2871->efr7163 next

This post reminded me i have an Indy 7163 lying around somewhere. Hmm...

This does look like it would be the pick of the T25 IWG turbos for 450hp or so.

A lot of people seem to make good numbers (better than 450hp even) on smaller turbos and turbines, but I think those really lean on the E85 to do that.

And about spool any info?

I put one on a j35 with non ideal manifolds (stock) and it gets to ripping pretty much full tilt at 2,000 RPM, enough to blow tiny 13" tires off the dyno.

Can't imagine it'd be fun in a miata, but EFR makes all those handy flow calculators so you don't even have to do it the old napkin way. Plot it out, see what it says...

https://www.borgwarner.com/matchbot/

Miata2fast has my old car that has the v-band version of this turbo on a built 1.9l BP. He's been refining that car for a few weeks and will probably be able to give some first hand impressions and logs here soon.

it will easily make 450 on e85 on a BP. how much more? don't know, last guy I tuned got scared to go any higher, car was insane

:rofl:
Even my car is pretty insane, that thing must be borderline uncontrollable.

And the spool its good?

Don t forget we only have 98ron in Portugal, and will be the main fuel.

At the moment i have 365hp with a good spool, my main thing is don t have to much lag.

My dyno
https://cimg3.ibsrv.net/gimg/www.mia...1dc05b1114.jpg

Looks like those dyno numbers are flywheel horsepower, peaking at 303 WHP?

Yes!

The car takes 8 seconds from 100-200kph ( 60-130mph).

As per the other thread, everyone here always uses WHP :)

300WHP is plenty quick!

Is that a 6758 plot? if so, you still have a ways to go until you are maxed out, even on pump gas. so you can keep your quick spoolup and still pick up more power

No no this is my GTX2860R Gen2.

I am getting the Mazdaspeed with a 7163 back on the road probably as early as this weekend. I will be reporting on it’s performance as soon as I work out the bugs.

Thanks.

Looks good bro, same turbo I am using. I have found the compressor to be tapped out at 1.5-1.6bar and in order to make more power you need high octane or a bigger turbo. Mine is making 370whp at 1.5bar though with 100 octane, 335whp on 93 octane at 1.2-1.3 bar.

Any news?

Not yet. Worked on a long list of maintenance issues this weekend to make it road and track ready.