~450WHP is the limits of a 255HP pump. It seems what you guys call flywheel HP is simply what we use as wheel HP. How you guys are getting flywheel HP from Chassis dynos on the other hand...

Dyno talk is boring though. Point remains, our "inflated numbers" seem to consistently go faster. The people out of the US all make claims of it being due to their tracks, but there are videos of STREETS in the US that were preped well enough to let 8s door slammers pull the wheels off the ground for 100 yards. If all of these tracks out of the US can't beat what some of these US Rednecks can pull off in their backyard, you guys have problems.

 

md numbers can be adjust too much to really matter, dyno jet are generally more consistent between each other as long as smoothing and correction factor are the same. Dynapak are great for high hp stuff or 2wd, it just removes the possibility of wheel spin but its still just a number and if the car cant hook whats the power matter anyways other than something to brag about.Id rather have a low reading dyno chart and a fast ET, but that's just me. Like 03 said, dyno talk is boring, track numbers are all that matter. There are just to many variables from one dyno to another let alone from one countries evo to another. They just aren't usually the same, too many little changes for different markets. This is how it should be x amount of airflow generates x amount of power on said dyno equals x time at a set track. IMO, the fastest event in the USA is usually MIR world nationals due to the DA being something like 3k feet below sea level and amazing track prep so if anyone wants a good place to compare it should be that track that week when the track prep and air is insane.

 

MIR is no where near 3k below sea level! lol

 

DA=/= sea level.

It's 80' above sea level, but the DA is 3000 below. (Density Altitude...factors in humidity and temp)

 

yup

 

240Z, I am still fascinated by the virtual dyno post here comparing the GTX3076 and GTX3576.
What I am looking at again is the hp curves are pretty much right on each other at everything below 4400 rpm. I wonder if this is how the car actually felt when you drove it. I mean, it looks like the 3076 had no advantage in the lower part of the rev range. Was that also your driving impression?

Also, what turbine housings did you use on these turbos?

 

That should teach me to not skim posts before posting. Missed the DA..

 

pictures of the Turbo, it's a BW 8374 EFR 1.05 AR EW
Big Thanks goes out to Geoff for sorting it out for me and getting me the Turbo ASAP
its bin a long wait and it was defiantly worth it

New housing look excellent! really smooth nothing like the other ones that were posted

 

I can still see the difference in the turbine housing. The original EFR turbine housings were very nice. That one looks pretty good, prob the coating hides some of the flaws. Nice pics, good quality- at one point I thought I had a pube on my computer screen.

 

quality definitely dropped, why??

here is mine "original casting" after some miles

 

it sounds like the company casting the original housings had too high of a defect rate. i think i read that many would crack during the cool down or something like that.

 

Well, cracking could lead to a containment issue (housing not being able to contain an exploded turbine wheel) and I don't remember anything like that being stated.
The explanation I remember was given in post #2240 by MrLith. It was basically that the castings had a rejection rate of over 60% right at the foundry. Not out in user land.

BTW I gather that PTE has a containment issue with their turbine housings. That is one of the complaints you can read about in this thread, which started in June of 2012. I just ran across it yesterday, some interesting stuff in here:

http://www.yellowbullet.com/forum/sh...d.php?t=481264

 

So to the turbo experts, what would be a comparable EFR to a PTE 5858 BB?
I have a ETS turbo kit with a BB 5858 with .63ar and I like the power but if I could get the same or better spool and more power out of a EFR I'll def switch...

 

somewhere in between of 7064 and 7670.

If you look at lbs/min (max . airflow) it's more closer to 7064....

 

Tell me please, is the EFR7670 IWF 0.92 with the Fullrace top mount kit good for the 2L engine? My targer is about 600hp .
I choose between the twin-scroll T3 kit with GTX3582 and IWG EFR7670 . I need good spool and response, the car is everyday car. Is the EFR really cool ?
Thank you.