New BW EFR Turbo Thread
#4441
Evolving Member
#4443
EvoM Guru
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Posted a dyno comparison or just said something about it? He blocked me on FB so I cant see it...lol. If he posted a dyno comparison save the pic and post it here.
#4446
Evolving Member
#4447
EvoM Guru
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Full Race has comp map overlays on their site. To me it looks like they really just stretched the map to the right, but didn't give up too much on the left side.
#4448
EvoM Guru
iTrader: (1)
Someone snagged the dyno plot for us.
This is R/TErnies car. IIRC it's a 4g64 based 2.2L with Mivec and with his own custom T4 twinscroll turbo kit.
This is R/TErnies car. IIRC it's a 4g64 based 2.2L with Mivec and with his own custom T4 twinscroll turbo kit.
The following 2 users liked this post by LetsGetThisDone:
MR ArcticC (Mar 7, 2019),
Strm Trpr (Mar 7, 2019)
#4449
Evolving Member
#4450
Evolved Member
The above is the EFR8474, and it's running the 1.05 housing which was on the EFR8374 it replaced.
Here is the EFR8374 result "all in" - everything else the same.
Here is the EFR8374 result "all in" - everything else the same.
The following 2 users liked this post by MrLith:
MR ArcticC (Mar 7, 2019),
Strm Trpr (Mar 7, 2019)
#4451
EvoM Guru
iTrader: (1)
So the 8474 spooled faster too.. that is awesome.
#4452
Evolved Member
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As usual, these dyno tests far apart are not representative of back to back testing, apples to apples.
According to Borg Warner, and Full Race, 8474 "should" spool about 200rpm later than 8374.
Faster not, but hopefully not too much later.
I attended a leisurely dyno-tuning session of an 8374 on 2.3 pump 91 California fuel and E85. Owner/tuner is not interested in pushing limits.
The 8374 spooled to 27psi in 3rd gear by about 4200-4300rpm on pump fuel.
In 4th gear it achieved 27+psi by 4000rpm.
On E85 in 5th gear 8374 was able to make 20psi by 3400rpm.
The tuning is continuing, using 4 port boost solenoid for example, and larger injectors.
Back to 8474, its a great answer for the 9174 crowd for sure.
But if it indeed spools 200rpm later than 8374, that will put it outside the taste-limits of those like me who like a super driveable car on street and are more backroad and track oriented drivers. 8374 is truly impressive, has made on Mustang Dyno on 91 California fuel about 475whp safely - 0 knock.
On E85 it can go to 625-635whp on Mustang, which reads 15% lower than Dynojet, proven.
According to Borg Warner, and Full Race, 8474 "should" spool about 200rpm later than 8374.
Faster not, but hopefully not too much later.
I attended a leisurely dyno-tuning session of an 8374 on 2.3 pump 91 California fuel and E85. Owner/tuner is not interested in pushing limits.
The 8374 spooled to 27psi in 3rd gear by about 4200-4300rpm on pump fuel.
In 4th gear it achieved 27+psi by 4000rpm.
On E85 in 5th gear 8374 was able to make 20psi by 3400rpm.
The tuning is continuing, using 4 port boost solenoid for example, and larger injectors.
Back to 8474, its a great answer for the 9174 crowd for sure.
But if it indeed spools 200rpm later than 8374, that will put it outside the taste-limits of those like me who like a super driveable car on street and are more backroad and track oriented drivers. 8374 is truly impressive, has made on Mustang Dyno on 91 California fuel about 475whp safely - 0 knock.
On E85 it can go to 625-635whp on Mustang, which reads 15% lower than Dynojet, proven.
#4453
EvoM Guru
iTrader: (1)
Maybe we'll eventually see more results, but sometimes turbo's yield results that engineers don't expect.
For example, the English Racing Drag X with a Gen2 Precision 6785 has an identical torque curve to a 5858 car, until it massively exceeds the 5858 past 4800rpm or so.
For example, the English Racing Drag X with a Gen2 Precision 6785 has an identical torque curve to a 5858 car, until it massively exceeds the 5858 past 4800rpm or so.
#4454
EvoM Guru
iTrader: (4)
If the temperature and air density numbers on the screen are correct, the 8474 was dynoed on a much colder day. The AIRDENS number differs by about 12% between the two charts. If those numbers are true, that could account for some of the differences.
Regardless, the 8474 is performing extremely well given the size. If R/TErnie says it's faster without giving much up to the 8374, I believe it.
Regardless, the 8474 is performing extremely well given the size. If R/TErnie says it's faster without giving much up to the 8374, I believe it.
#4455
EvoM Guru
iTrader: (1)
If the temperature and air density numbers on the screen are correct, the 8474 was dynoed on a much colder day. The AIRDENS number differs by about 12% between the two charts. If those numbers are true, that could account for some of the differences.
Regardless, the 8474 is performing extremely well given the size. If R/TErnie says it's faster without giving much up to the 8374, I believe it.
Regardless, the 8474 is performing extremely well given the size. If R/TErnie says it's faster without giving much up to the 8374, I believe it.