99mx5 EFR build
04-27-2012, 06:11 PM
#261
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
I call BS on the numbers. I am sure it is fast but there is no way it is that fast.
That is A LOT of power at 12psi. Especially considering it is mustang dyno power. In fact, it's more power than a GT30 will put down at 15psi on a Miata.
The turbo is way too small to flow enough air for that HP at that psi. Even with e85 and all the timing and cams and headwork in the universe it wouldn't happen.
That is A LOT of power at 12psi. Especially considering it is mustang dyno power. In fact, it's more power than a GT30 will put down at 15psi on a Miata.
The turbo is way too small to flow enough air for that HP at that psi. Even with e85 and all the timing and cams and headwork in the universe it wouldn't happen.
Reply
0
0
04-27-2012, 06:50 PM
#265
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,490
Total Cats: 4,079
Full Race website has a dyno plot of the EFR 6258 putting down roughly 500rwhp on a dyno dynamics at 23psi of boost.
blue line is a 2871.
Reply
0
0
04-27-2012, 06:51 PM
#267
Hmm, it's a 44lb wheel right?, 315 seems plausible. The EFR turbos are supposed to have pretty good spool characteristics and excellent mid range so doesnt seem too crazy.
Were there any correction factors applied by the dyno?-doesn't matter if it is a mustang you can tweak the software to make it say whatever you want
Were there any correction factors applied by the dyno?-doesn't matter if it is a mustang you can tweak the software to make it say whatever you want
Reply
0
0
04-27-2012, 07:03 PM
#269
Elite Member
iTrader: (2)
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,682
Total Cats: 130
That ain't no miata motor. You could put this turbo on a Viper and it would make 500hp with 0psi of boost.
Hmm, it's a 44lb wheel right?, 315 seems plausible. The EFR turbos are supposed to have pretty good spool characteristics and excellent mid range so doesnt seem too crazy.
Were there any correction factors applied by the dyno?-doesn't matter if it is a mustang you can tweak the software to make it say whatever you want
Were there any correction factors applied by the dyno?-doesn't matter if it is a mustang you can tweak the software to make it say whatever you want
Yeah of course it's plausible but NOT at 12psi. This is not a s2000 and this is not a huge turbo. No.
Reply
0
0
04-27-2012, 10:17 PM
#272
Well, look at it this way. The other guy who dyno'd his 6258 made 270whp @ 12psi....on a LOG manifold and a Link ecu.
The differences between Ari's setup and the other one are pretty significant.
Ari:
-ramhorn manifold vs. non-center flanged log
-Square top vs. stock 94 manifold
-Precision intercooler vs. a stock Saab unit
-better engine management vs. Link
-ported 99 head vs. stock 94 head
etc...
The differences between Ari's setup and the other one are pretty significant.
Ari:
-ramhorn manifold vs. non-center flanged log
-Square top vs. stock 94 manifold
-Precision intercooler vs. a stock Saab unit
-better engine management vs. Link
-ported 99 head vs. stock 94 head
etc...
Reply
1
1
04-27-2012, 11:54 PM
#273
Elite Member
Thread Starter
iTrader: (16)
Join Date: Oct 2006
Location: Las Cruces, NM
Posts: 1,647
Total Cats: 524
Edit: Printer was FUBARed, only pics no prints.
Last edited by 99mx5; 04-28-2012 at 12:19 AM.
Reply
0
0
Thanks Andrew. The runs stopped at rev cut.
04-28-2012, 01:17 AM
#277
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Can you do a spool test in your 1:1 gear (4th or 5th) from 2000rpm up? It looks like the turbo "hits" really late.
Still, though, 200lb.ft at 4000rpm, at 4000ft. lolol
Still, though, 200lb.ft at 4000rpm, at 4000ft. lolol
Reply
0
0
