Viper GTSR

**Bump: 8474 results please!?! 😩🙏

dabigesii

iTrader: (4)

Aww, I got excited when I got a notification lol...just another person anxiously waiting for results.

Narfle

iTrader: (16)

You need to become a forum vendor, or cease to offer parts and services on this forum.

RGHTBrainDesign

I'm not selling anything to anyone on this forum. That's not even what I said. I have turbos here, ready to ship.

Narfle

iTrader: (16)

The correct answer was: "I'm sorry. I value being a member of this community and respect the vendors who pay to keep it alive. And, therefore I will abide by the rules."

7 day ban. Next time you won't grow back.

Turblown

iTrader: (12)

High Performance Academy FD is all done.

Dyno next!

strokercharged95gt

About damn time. Been waiting to see this review for while now to see if the 8474 or 9180 is the best 600 rwhp 13b turbo...

Brettus

Could do with a few more welds on that intake !

strokercharged95gt

That's how you make it work when you only have 3 inches of tubing and a box full of welding rods...

Turblown

iTrader: (12)

Adam cast efr 8474 a downpipe away from the rollers. Same dyno and setup( including tuner) as our previous gen welded 7670 ewg. Overlays to follow.

dabigesii

iTrader: (4)

Bump for results. I've been holding up my build to see if I want to switch to these.

Skeese

iTrader: (11)

100% not warranted ban based on personal issues with the accused. Vendors should pay for a vendor subforum, not preferential treatment by mods. This was completely unwarranted and rooted in personal bias. Whether you like his approach or not, Ryan is one of rare few who will keep this forum alive as he takes the initiative and gives a damn. If you ban those like him and opt to keep the paying vendors who profit from the sale of their product and hinge their recommendation on that rather than true technically unbiased fact then you may as well be part of the Facebook mob suffocating this platform with ignorance.

I have a garage full of new turbos for sale that I haven't posted in the classifieds and I'm not a vendor, ban me. I wont grow back, and I'll officially retire from fixing the botched tunes of "vendors" when their customers seek me out after once they've been billed and their car runs like ****.

Skeese

RGHTBrainDesign

It's okay man, we don't need to post results of the following **** tuners who still have no idea how engines work:

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That's the tip of the iceberg there with issues in this small section of the automotive industry.

I think that what Skeese and I have been trying to do here on this forum is keep things in check that we know to be false. If you hadn't noticed, many $75/month paying vendors have left quite a few of our members in the dust when products of theirs have failed, tuning was ****-poor, or ECUs were sent to Australia for half a dozen different issues. Paying or not, real data and truth are what matter. I think that should raise a flag, that information should be out there, and these things be brought to light, but time and time again I see it stifled. The amount of people that have come to me this month with the, "I just sold my car because I couldn't find a tuner I trusted." or "I'm still waiting on parts from ____ vendor." or "____ built me the trashiest motor with used seals and dipped it in RTV." has been astronomical.

I want to work together to build a community worth helping, but I shouldn't be the only one who wants that...

I don't need a following to build and tune badass cars. I'd rather help someone get their car running better than get a thousand shitty manifolds sold or a million views on YouTube.

Maybe, just maybe, there should be some fact checking going on here. I have evidence. Skeese has evidence. Who wants to see what?

Narfle

iTrader: (16)

Drop shipping turbos as a business is different than selling discrete pre-own items. And pretending otherwise is a joke.

You're in here instigating a fight with a bunch of people on a personal level, regardless of vendor context. This is exactly the sort of behavior which has given you such a reputation, and keeps you on thin ice with the mod staff.

RGHTBrainDesign

Based on my math, this shifts the surge line in the wrong direction as the compressor and turbine wheel are further imbalanced on a rotary engine application. (turbine wheel is too small)

You're better off with a 8374 EFR, 8380 SX-E, or something along the lines of the Garrett G42 series.

This video series might help you understand what you're up against. The gist of it is that the 8474 is more like the GM Factory Turbo as it's ratio of compressor to turbine wheels is more compressor biased, when compared to the 8374, 8380, or G42s.:

Viper GTSR

Well I'd like to see REAL results by a reputable tuner on a setup that can actually max out this new turbo (8474) before we start speculating too much (for or against it) I'm very excited to see the type of performance these new EFR turbos can shell out on the 13 B's... what's the delay on the so called project car in this thread!? 🤷🏻*♂️😏

KYPREO

Based on updates I read from the workshop on social media, the delay is the car couldn't hold traction on the dyno so they couldn't complete tuning/do a full power fun.

RGHTBrainDesign

Notice how it flows 95lbs/min just like the 9174 and 9180?


It's all in the math, always is. This turbo, just like the other EFRs are less than perfect for an undersized turbine wheel size on a rotary application. While they're amazing on reciprocating engines like a 1jz/2jz wanting 800whp, it's mismatched for a 13B.

I wrote this page here:
https://www.full-race.com/store/borg...o-12747100019/

Turblown

iTrader: (12)

Dyno is next business day! New Diff is in....

Turblown

iTrader: (12)

http://www.instagram.com/s/aGlnaGxpZ...1408_602139309

Viper GTSR

So not an accurate reading from spinning the tires on the rollers? How much fuel & boost are they turning it up to before we get the actual HP figures and dyno chart? 🙏😊

Turblown

iTrader: (12)

No its just making a lot of power. Currently at 500rwhp, but that hasn't been a full pull. I haven't heard the torque figure yet, but I assume its also north of 450rwtq to spin the tires on the dyno.

What is interest is they are saying that overlayed vs the EWG 7670 shorty kit its making more power the entire curve, even at 2k rpms.

Waiting on some overlays.

Viper GTSR

Wow! 😳😎 Amazing stuff, that is sounding like a potential game changing powerband for the ultimate road racing and street turbo made period. 👍

Cant wait on full dyno results at max boost & power.

KYPREO

I would expect that having an IWG on the 8474 vs EWG on the 7670 will recover some of the difference in effort to spool the bigger compressor and that IWG8474 vs IWG7670 would show more more of a difference. Also, given the turbine similarity between 8374 and 8474 I would expect those turbos to have similar response but with the 8474 having more top end potential. And we already knew the difference in turbo response between 8374 and 7670 wasn't that big a difference to begin with.

Finally, 4th gear power runs obviously have a lot more load and will spool the turbo much faster than in lower gears or in transient turbo response conditions. Still looking forward to seeing the results!

zx1441

The above statement is incorrect. Rotaries work more efficiently and make more power with MORE compressor. The excessive Emap will come from the incorrect size exhaust turbine and AR. The math you are claiming is dead wrong when you say"The other EFRs". Numerous drag cars for decades do not follow your math, because math does not translate to reality in this case.

Ports also have EVERYTHING to do with efficiency.

I don't care how many posts I have under my belt on this forum vs yours. A 9180 is absolutely efficient as it gets, the 9280 will be even more efficient(at higher boost levels), and I will find this out soon for myself.