Case Study - Evo IX Stage II with Alky - stock vs Cosworth Cams
Dec 27, 2006, 11:42 PM
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Case Study - Evo IX Stage II with Alky - stock vs Cosworth Cams
This car is just for informational purposes
The car had a Megan header which was leaking slightly at the time of the tune from either a crack or a leaking gasket or both so the power and tune may have been effected
This said I think the results demonstrate some data regarding what we can look forward to with cams on the Evo IX
Mods were
Stage II Evo IX
Intake
Fmic
3" Exhaust
02 Housing
Megan Header
Alchy Injection
MBC
93 Octane with 28 psi peak boost falling to 19
(Note this tune is very agressive on boost level and tune to try and max out the potential of the cams)
The pre cam tune was the most powerful IX I had tune on the Dyno Dynamics to date
I would be curious to see how the car would have run with no leaks in the exhuast header the leak got worse and worse as I tuned it to the point of becoming a significant leak by the end of the tuning session
I am not sure if the additional lag down low is from the cams or the exhuast header leak so that is why my results are inconclusive
The TQ was to violent the car was almost twisting the dyno - it was a significant transformation on the road - it had a very different "feel" vs a normal stock cam IX
Keep in mind on straight pump gas I am not sure what additional power the stock octane fuel would allow over what a IX can already make on the stock cams.
Additionally, with a larger turbo I would have expected more gains as on this car the stock turbo is 100% maxed out
This was the car before with stock cams - vs. today with the Cosworth cams
The car had a Megan header which was leaking slightly at the time of the tune from either a crack or a leaking gasket or both so the power and tune may have been effected
This said I think the results demonstrate some data regarding what we can look forward to with cams on the Evo IX
Mods were
Stage II Evo IX
Intake
Fmic
3" Exhaust
02 Housing
Megan Header
Alchy Injection
MBC
93 Octane with 28 psi peak boost falling to 19
(Note this tune is very agressive on boost level and tune to try and max out the potential of the cams)
The pre cam tune was the most powerful IX I had tune on the Dyno Dynamics to date
I would be curious to see how the car would have run with no leaks in the exhuast header the leak got worse and worse as I tuned it to the point of becoming a significant leak by the end of the tuning session
I am not sure if the additional lag down low is from the cams or the exhuast header leak so that is why my results are inconclusive
The TQ was to violent the car was almost twisting the dyno - it was a significant transformation on the road - it had a very different "feel" vs a normal stock cam IX
Keep in mind on straight pump gas I am not sure what additional power the stock octane fuel would allow over what a IX can already make on the stock cams.
Additionally, with a larger turbo I would have expected more gains as on this car the stock turbo is 100% maxed out
This was the car before with stock cams - vs. today with the Cosworth cams
Last edited by DynoFlash; Dec 27, 2006 at 11:45 PM.
Dec 28, 2006, 01:37 AM
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that dyno is nuts...
come roll that car on the dyno here at aussimports.. i'll personally suck your sack if it makes that much.
is this like a 1.25 correction al?
come roll that car on the dyno here at aussimports.. i'll personally suck your sack if it makes that much.
is this like a 1.25 correction al?
Dec 28, 2006, 06:01 AM
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from the dynograph:
Set of plot with cosworth cams:
93 + alky
boost 28->19
Set of plot with stock cams:
93....?
boost?
Set of plot with cosworth cams:
93 + alky
boost 28->19
Set of plot with stock cams:
93....?
boost?
Last edited by SlowCar; Dec 28, 2006 at 06:16 AM.
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Dec 28, 2006, 07:05 AM
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But the point of the thread isn't really about how high numbers are on this DD dyno, but the gains achieved with the Cams, people are getting off topic. If you believe the dyno reads high or not, is not the purpose of this thread. On topic- the IX cams seem to be producing some great numbers, I want to see how GSC Cams compare to Cosworth?
Dec 28, 2006, 07:18 AM
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I am soo flipping sick of dyno reading debates..... the real number makes no difference..... every dyno reads different. At least there is a before and after on the same dyno. The power CHANGE which is dependent on many variables is what you should be looking at.
Dec 28, 2006, 07:23 AM
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But the point of the thread isn't really about how high numbers are on this DD dyno, but the gains achieved with the Cams, people are getting off topic. If you believe the dyno reads high or not, i s not the purpose of this thread. On topic- the IX cams seem to be producing some great numbers, I want to see how GSC Cams compare to Cosworth?
Bingo
The same exact settings were used on both the pre cam and post cam dyno sheets
Therefore, what the sheet shows is the gains from the cams and tuning for the cams
A dyno is best used as a tuning tool or to measure the gains or losses from individual parts changes or tuning adjustments (as in this case)
It is foolish to "bench race" between one dyno to another - and is not what a dyno is used for
As I have said above - the tuning calibration used to create these numbers is very agressive. To give you an idea of how much power this is the Evo 8 which went 11.2 with a stock ecu, motor and turbo made significantly less power and TQ than this car did
Here is the dyno sheeet from the car which went 11.2 :
Pre tune pull was on the base flash which went 11.56
The final tune pull went 11.2 @ 120 mph (note with a car that is somewhat lighter than a stock Evo)
I would expect this car to be over 120 mph in the 1/4 - so to me a track test would be in order when the customer gets his leak fixed
Last edited by DynoFlash; Dec 28, 2006 at 07:30 AM.
Dec 28, 2006, 07:32 AM
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(I think you may have watched too many Deliverance re-runs)