Injected Performance: Cosworth dyno test at 7000+rpm FI
12-20-2007, 11:30 AM
#1
Injected Performance: Cosworth dyno test at 7000+rpm FI
Today we performed back to back dyno tests on the Cosworth plenum vs stock. It is clear where the Cosworth plenum truly shines... forced induction, as many have suspected. Giving up virtually nothing, this manifold yielded an impressive 30-40whp gain from 5200-7200+rpm.
We did not take preorders on these until we could test them, so we have a few manifolds on the way that are still unspoken for. You can order yours online at http://www.injectedperformance.com/V....aspx?ID=10372
The slight loss at 4500rpm can be attributed to the later spool on that pull. The car was tuned before/after using the Haltech Platinum 350z pnp standalone.
Red=Stock , Blue=Cosworth
We did not take preorders on these until we could test them, so we have a few manifolds on the way that are still unspoken for. You can order yours online at http://www.injectedperformance.com/V....aspx?ID=10372
The slight loss at 4500rpm can be attributed to the later spool on that pull. The car was tuned before/after using the Haltech Platinum 350z pnp standalone.
Red=Stock , Blue=Cosworth
12-20-2007, 11:43 AM
#7
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Originally Posted by rednezz
Awesome...do you guys plan on testing on a cammed & bolt on NA Z?
I will tell you guys right now...this is NOT a manifold for a stock motor. If you are looking at this as a bolt on mod, it's going to amount to basically eye candy. But for those with built motors, NA or FI, it is going to prove to be absolutely fantastic
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12-20-2007, 12:08 PM
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Thanks for posting... Not bad...
I was hoping to see power still going up at 7K, and this is with a 4.2 stroked motor.
Still not impressed, but I will do a 1/2 spacer vs Cosworth test next month. I really want to see the diff between a spacer and this plenum.
Thanks again for the effort on producing this test!
I was hoping to see power still going up at 7K, and this is with a 4.2 stroked motor.
Still not impressed, but I will do a 1/2 spacer vs Cosworth test next month. I really want to see the diff between a spacer and this plenum.
Thanks again for the effort on producing this test!
Last edited by eagletanggreen; 12-20-2007 at 12:13 PM.
12-20-2007, 12:19 PM
#19
Originally Posted by Z1 Performance
that will be my job
I will tell you guys right now...this is NOT a manifold for a stock motor. If you are looking at this as a bolt on mod, it's going to amount to basically eye candy. But for those with built motors, NA or FI, it is going to prove to be absolutely fantastic
I will tell you guys right now...this is NOT a manifold for a stock motor. If you are looking at this as a bolt on mod, it's going to amount to basically eye candy. But for those with built motors, NA or FI, it is going to prove to be absolutely fantastic
12-20-2007, 12:20 PM
#20
Originally Posted by Hal@IP
IP 4.2L, IP Stg4 Heads, BC 264 cams, SFR 60-1's, conservative pumpgas tune
What PSI were you running? And any plans to run a test with higher PSI?